Best RV Battery Monitor: Keeping Accurate Track Of RV Battery’s State Of Charge is reader supported. When you buy through links on our site, we may earn an affiliate commission.

For any motorhome, batteries are the lifeline as they supply power to all the electronic accessories and appliances, including light, water pumps, etc. All batteries have a limitation in terms of the charge cycle. For both new and experienced campers, a certain amount of power management is necessary, and only a battery monitor can ensure proper power monitoring.

An RV battery monitor is a crucial device for power management of an RV. Whether the motorhome runs on solar or not, keeping track of the power consumption and battery charge is beneficial in every way.

But many campers do not know about the basics of the RV battery monitor, which unit to buy and how to make it work more accurately. To make it effortless for you to pick out the best RV battery monitor, which is an absolute must, we have compiled everything you need to know about the monitor panels of RV batteries.

Best RV Battery Monitors Comparison Chart

 Product's namePriceKey FeaturesMore Info
Victron BMV-712 Battery MonitorVictron BMV-712 Battery Monitor$206.25Dimensions: 2.4 x 2.4 x 1.3 Inches
Weight: 1.6 Pounds
Built-in Bluetooth connection
Programmable alarms
Optional setup menus
See Latest Price
bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter...bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy...$18.99Dimensions: 3.5 x 2.0 x 1.0 Inches
Weight: 0.4 Pounds
Integral data storage
Low power draw
See Latest Price
Battery Monitor, DROK 10-100V Digital Battery Capacity Tester, Percentage Level Voltage Temperature...Battery Monitor, DROK 10-100V Digital Battery Capacity Tester, Percentage...$15.85Dimensions: 2.4 x 1.3 x 0.5 Inches
Weight: 0.2 Pounds
Dustproof and waterproof
Universal compatibility
See Latest Price
AiLi Voltmeter Ammeter Voltage Current Meter Voltmeter Ammeter 100V 350A Caravan RV Motorhome 999 AHAiLi Voltmeter Ammeter Voltage Current Meter Voltmeter Ammeter 100V 350A...$44.00Dimensions: 6.0 x 6.0 x 2.1 Inches
Weight: 0.9 Pounds
Cable included
Mounting holes
See Latest Price
MNJ MOTOR DC Battery Monitor Meter 0-200V 0-100A LCD Display Digital Current Multimeter Voltmeter...MNJ MOTOR DC Battery Monitor Meter 0-200V 0-100A LCD Display Digital...$18.99Dimensions: 6.0 x 6.0 x 2.1 Inches
Weight: 0.9 Pounds
360-degree viewing
No screw installation
High precision chip control
See Latest Price
Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester 12V Automotive Battery Load...Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester 12V...$$$$Dimensions: 9.5 x 8.1 x 1.3 Inches
Weight: 0.2 Pounds
App for IOS and Android
Short-circuit and reverse polarity protection
See Latest Price
TURN RAISE Dual USB Charger Aluminum Switch Panel + LED Voltmeter + 12V Power Socket + ON-Off Button...TURN RAISE Dual USB Charger Aluminum Switch Panel + LED Voltmeter + 12V... $13.99Dimensions: 4.3 x 3.8 x 3.0 Inches
Weight: 0.3 Pounds
Dual USB socket
For 12V and 24V applications
FCC and CE-compliant
See Latest Price
Innova 3721 Battery and Charging System MonitorInnova 3721 Battery and Charging System Monitor$19.22Dimensions: 10.0 x 6.5 x 1.0 Inches
Weight: 0.5 Pounds
Pivoting head
Indicator lights
Bar graph
See Latest Price
DC 12V 24V 36V 48V 72V Battery Meter, Battery Capacity Voltage Monitor Gauge Indicator,...DC 12V 24V 36V 48V 72V Battery Meter, Battery Capacity Voltage Monitor...$$$$Dimensions: 4.0 x 3.2 x 0.3 Inches
Weight: 0.2 Pounds
PVC screen protector
Visual alarms
See Latest Price
MICTUNING DC 6.5-100V 0-100A LCD Digital Display Ammeter Voltmeter Multimeter Volt Watt Power Energy...MICTUNING DC 6.5-100V 0-100A LCD Digital Display Ammeter Voltmeter...$17.95Dimensions: 3.5 x 2.0 x 0.9 Inches
Weight: 0.4 Pounds
Flush interface
Memory function
See Latest Price
WATERWICH Waterproof 12V DC Voltmeter Color LED Digital Display with Flat Panel Volt Meter Voltage...WATERWICH Waterproof 12V DC Voltmeter Color LED Digital Display with Flat... $18.69Dimensions: 3.5 x 2.0 x 0.9 Inches
Weight: 0.4 Pounds
Mini size
Waterproof and flame-retardant
See Latest Price
Battery Monitor ANCEL BM300 Bluetooth Voltmeter, Automotive Battery Voltage Charging Cranking System...Battery Monitor ANCEL BM300 Bluetooth Voltmeter, Automotive Battery Voltage...$39.99Dimensions: 5.2 x 4.1 x 1.1 Inches
Weight: 0.2 Pounds
Real-time supervision
Bluetooth connectivity
See Latest Price
MICTUNING LED Digital Double Voltmeter, Round Panel Voltage Monitor Blue for Car Pickup RV Truck...MICTUNING LED Digital Double Voltmeter, Round Panel Voltage Monitor Blue...$15.99Dimensions: 1.9 x 1.9 x 0.9 Inches
Weight: 0.0 4 Pounds
Two digital displays
ABS plastic
Wear and tear-resistant
See Latest Price
DROK Voltage Amp Meter DC, Battery Monitor DC 0-300V 200A, Ammeter Voltmeter for Solar System Setup...DROK Voltage Amp Meter DC, Battery Monitor DC 0-300V 200A, Ammeter...$28.99Dimensions: 4.7 x 2.4 x 2.0 Inches
Weight: 0.2 Pounds
STN screen
Bi-direction measuring
Backlight control
See Latest Price
Blue Sea Systems 1830 M2 OLED DC SOC MeterBlue Sea Systems 1830 M2 OLED DC SOC Meter$$$$Dimensions: 3.1 x 3.1 x 0.5 Inches
Weight: 4.0 Pounds
OLED display
Adjustable alarm
See Latest Price

RV Battery Monitor Basics

Find out what a monitor is and how important it is for the battery of an RV.

What is RV Battery Monitor?

A travel trailer battery monitor provides information about the load and charge of the battery. At the same time, it displays the number of cycles and the history of the battery.

Using a shunt, a monitor can measure the volume of energy getting in and out of the RV battery. It helps users by telling them how much charge is remaining in the battery unit, so they can take the necessary steps to avoid any inconvenient situation.

How Important Is a Battery Monitor for RVs?

If some campers are planning to stay in a place without hookup connections or being dependent on solar power or batteries, an RV battery monitor is something they would not want to miss. Through a battery monitor, users can get various readings including:

  • Battery voltage
  • Amperage flowing in/out of the battery
  • Percent of remaining battery power

However, a cheap battery monitor for RV might display voltage and net amperage only.

This monitor gives an idea about the amount of energy the solar panels are generating. It also tells about the impact of the cloud on power and how fast the power is coming in. The monitor provides accurate data on the consumption of the solar panels.

With this monitor, one can know the amount of energy any electrical device is drawing. Thus, it becomes easy to find out the culprit if the battery life is running low.

If a battery drains 80% of its charge, it will face severe damage. The statement is true for even the most popular “deep cycle” batteries. On the other hand, batteries will have a longer life if the charge level never goes below 50%. Now, there is no better way to track this battery charge without having a battery monitor.

If someone plans to cut costs by trying to get an idea about battery charge level from dimmed light, they will end up having permanently dead batteries within a year.

What Comes with a Battery Monitoring System?

An RV battery monitoring system (BMS) or battery monitoring kit (BMK) usually comes with three devices:

Display: The most crucial part of this kit is the monitoring display. It has either an LCD or an LED touchscreen. Through this display, users can see details about the battery and its charge. Backlit displays are perfect for reading in all situations.

Shunt: This is the device one needs to connect straight to the battery. Connect all of the electronic devices to the shunt instead of the battery to get accurate data. For any exception, it will generate false data.

Wire Connector: Its function is to establish a secure connection between the shunt and the display.

Apart from these, some battery monitor kits also come with a remote controller and mounting hardware. Typically, a monitoring system comprises everything that can be necessary, so people can start using it immediately.

How Does a Battery Monitor Work?

The primary purpose of an RV battery monitor is to keep the batteries healthy. To ensure this health, it measures how full the battery is. When the monitor detects that the battery is full of charge, it keeps track of the power that is going out of the RV battery. Some monitors display the remaining percentage, while others will show that through a bar graph.

Reviews on The Best Battery Monitors For RV 

With a diversity of liking and taste, RVers have contracting ideas about the best RV battery monitor on the market. Still, in the case that you like to get your money’s worth, it’s suggested that you give the models down below a closer look:

1. Victron BMV-712 – Best Lithium Battery Monitor

Why This Is The Best:

Engineered with convenience in mind, BMV-712 of Victron is well-received by enthusiasts of RVing that seek no-nonsense monitors for batteries of recreational vehicles. Thanks to the built-in Bluetooth connection, BMV-712 is able to pair with plenty of mobile devices and let RVers supervise their battery banks remotely. In addition to that, possessing optional setup menus (one quick-install and one detailed), the battery monitor from Victron could be installed with relative ease. Victron BMV-712 is sold alongside mounting bezel and screws so there is no need to make separate purchases for hardware. 

In use, the battery monitor of Victron is going to keep owners of recreational vehicles up-to-date about current, voltage and ampere-hours consumed. Besides those, it’s possible for RVers to get BMV-712 to show time to go, state of charge and power consumption in watt as well. Thus, once it comes to all-round supervision, BMV-712 of Victron is the best RV battery monitor money can buy. The battery monitor made by Victron is also a breeze to maintain which is a big plus in extended trips.  

Compared to typical battery monitors on the market, Victron BMV-712 indeed seems to be slightly expensive but the values it brings justify its price tag. BMV-712 is backed with a five-year manufacturer warranty too. 

The Victron BMV-712 is a must for keeping tabs on RV batteries ! I bought this for my Son’s RV, and the information it provides is more than just useful, it’s absolutely necessary to prevent the RV batteries from being drained or even permanently damaged. The Bluetooth and Victron Connect app make it super easy to monitor so many battery conditions, even while traveling. Don’t leave home without it!

Shared by Niteman131


  • Slim and sleek
  • Instantaneous installation 
  • Maintenance is child’s play 


  • Less than ideal customer service 
  • Some users complain about receiving inoperable units 

2. bayite B013PKYILS – Excellent for RV Use

Why It’s An Editor’s Choice:

Basic and practical, B013PKYILS of bayite is adaptable and works well in various applications. Boasting a small build, the battery monitor from bayite occupies negligible amounts of space so it can be squeezed in a wide range of rigs. Moreover, since the display of B013PKYILS packs backlighting that could be manually enabled and disabled, RVers should have no trouble checking out the readings. Needless to say, for those that travel regularly and have to deal with changing ambient lighting, bayite B013PKYILS is the best RV battery monitor. 

About installation, the setup process of B013PKYILS is pretty intuitive so getting it operational is a walk in the park. Owing to the low power draw, people don’t have to worry about the battery monitor of bayite depleting batteries in the course of operation. Interestingly, bayite B013PKYILS is capable of storing energy data when power supply is interrupted. Hence, with B013PKYILS, it’s simple to gather information and analyze the performance of the battery banks at any time.  

In terms of post-purchase support, bayite offers everyone that picks up its battery monitor a one-year manufacturer warranty. That means if your B013PKYILS fails due to defects within the warranty period, you could claim a free replacement. 

Very happy with the functionality of this unit. I’m using it to monitor energy usage in my RV. I do wish I had a better place to mount the shunt (on top of the battery) , but that’s not the fault of the unit. I can monitor both discharge and charging current by installing a DPDT switch on the leads to the shunt. By throwing the switch it reverses the polarity of the shunt connections, works perfectly. My one wish is that the reset button were not recessed. For the install I used a blank electrical plate cover. The mounting tabs are made for thin materials and since this is mounted into a 1/4 plywood cabinet sidewall I didn’t think it would stay put. Though if I could subtract half a star from the rating I would because I’m also not thrilled with the mounting/housing. There’s only 2 small spring tabs to hold the thing in place. I ended up epoxying it to the electrical cover plate.

Shared by M. Brownson


  • Competitive price
  • Space-saving 
  • User-friendly interface


  • Quality control could use some work 
  • Only measure currents in one direction 

3. DROK 2001710003 – An Reliable RV Battery Monitor

Why It’s An Editor’s Choice:

Featuring universal compatibility, DROK 2001710003 operates fantastically with a lot of modern-day batteries: lead-acid, lithium, Ni-Mh and more. In the case that the battery bank of your rig consists of more than one type of battery, you must consider adding 2001710003 to your shortlist. Also, being designed with a protective shell that keeps it dustproof and waterproof, the battery monitor from DROK is superior to usual models regarding endurance. Assuming that owners of recreational vehicles don’t push it to the extreme, DROK 2001710003 should last through multiple travel seasons. 

For interface, the DROK battery monitor incorporates a flush LCD display that allows RVers to supervise key readings such as battery capacity, temperature and voltage. To cycle between the values, enthusiasts of RVing just have to hit the arrow key. When 2001710003 notices that the battery voltage is getting low, it would immediately generate visual and audible alarms to warn people. Since the battery monitor of DROK comes with a built-in on/off switch, you could deactivate it without having to sever the wiring connection. 

The maintenance of DROK 2001710003 is undemanding, thus, keeping it up and running is by all accounts a piece of cake. Unsurprisingly, many RVers that like to spend more time on traveling and less time on equipment maintenance think of 2001710003 as the best RV battery monitor. 

Very easy to install. Using it to monitor a 12v deep cycle battery connected to patio lamps and recharged with solar panel system. Measures battery % , voltage and temperature in sorrounding area. Cables are about 10” long which facilitates connectons. Can be turned on or off. If low battery, alarm beeps. Backlight and On light indicator led makes it easy to read.

Shared by LGand Sr.


  • Tough 
  • Dependable and reliable 
  • Instructive and detailed directions 


  • Reading accuracy leaves something to be desired
  • Tech support should be overhauled 

4. AiLi TR-16Perfect Addition for 12 Volt Battery System

Why We Love It:

Need an all-inclusive 12-volt battery monitor that helps you keep watch over your batteries? Then you would certainly come to like the TR-16 of AiLi and what it could do. Packing a handy multi-reading display, the AiLi battery monitor is going to provide you with constant updates about the battery bank of your rig. With TR-16, increasing the life of batteries and reducing failures should be child’s play. Additionally, as AiLi TR-16 possesses impressive supervision ranges, it proves to be well-suited for rigs with extensive battery banks. 

With minimal measuring error, TR-16 display readings with marvelous precision in all sorts of environments. The battery monitor from AiLi consumes only a bit of energy in use so its presence hardly changes the power consumption rate of recreational vehicles. Because of that, AiLi TR-16 is quite popular among RVers that want to save electricity and cut down utility bills. Last but not least, TR-16 integrates a memory function that immediately stores performance data when the monitor is shut down.

As for installation, since AiLi TR-16 comes with mounting holes and a cable, enthusiasts of RVing could set it up in a matter of moments. Furthermore, the maintenance of the battery monitor made by AiLi is fairly straightforward which is why there is no need to give it special treatment. 


  • Outstanding ruggedness 
  • Great packaging 
  • Light and compact 


  • Owner’s manual needs to be rewritten 
  • Several units experience bugs over time 

5. MNJ Motor MNJ-BT-028

Why We Love It:

Created with an LCD HD display that permits 360-degree viewing, MNJ Motor MNJ-BT-028 makes it easy for RVers to supervise batteries from various angles. The display of MNJ-BT-028 also features backlighting, therefore, people could get a clear view of readings throughout the day. Carrying a high precision chip control,  the battery monitor for RV of MNJ Motor operates steadily and maintains a brilliant level of accuracy as well. Unsurprisingly, MNJ-BT-028 of MNJ Motor earns countless positive remarks from RV battery monitor reviews

Unlike the average monitor for batteries of recreational vehicles on the market, the installation of MNJ-BT-028 involves no screw. Thus, setting up the battery monitor made by MNJ Motor is a cakewalk and RVers don’t have to use any tool in the process. For enthusiasts of RVing that have little time to spare, MNJ Motor MNJ-BT-028 is the best RV battery monitor. Aside from that, being compatible with common types of batteries, MNJ-BT-028 would readily pair with lots of battery banks. 

Available at a price that matches the wallets of most owners of recreational vehicles, MNJ Motor MNJ-BT-028 is inexpensive. So the purchase of the MNJ-BT-028 should have inconsequential impacts on your upcoming spendings.


  • Economical 
  • Accurate readings 
  • Commendable delivery service 


  • May overheat on occasions 
  • RVers notice inconsistencies between units 

6. Bunker Indust FRD-BT

Why We Love It:

Since it’s constructed using temperature-resistant materials, Bunker Indust FRD-BT runs smoothly even if subjected to substantial heat. Hence, enthusiasts of RVing that hit the road in the summer usually think highly of the Bunker Indust battery monitor. In addition, FRD-BT works with numerous batteries from lead-acid to lithium so its compatibility is second to none. Bunker Indust FRD-BT is a slender battery monitor as well so finding a fitting spot for it on recreational vehicles is just a snap. 

In times of need, FRD-BT could pair with smartphones and tablets through apps which let RVers supervise battery banks without having to stay onboard. The battery monitor from Bunker Indust connects directly so owners of recreational vehicles don’t have to bother with codes. It’s worth pointing out that FRD-BT of Bunker Indust is capable of storing data for more than one month if out of sync. That is why FRD-BT is sought after by enthusiasts of RVing that like to have a firm grasp on the performance of their batteries.

Regarding safety features, FRD-BT of Bunker Indust boasts short-circuit and reverse polarity protection. When the battery monitor from Bunker Indust detects odd readings, it would send out alarms and give people head-ups of problems in the batteries. 


  • Affordable 
  • Fantastic level of safety 
  • Uncomplicated setup process 


  • Complaints about pairing issues show up intermittently 
  • Unresponsive customer service 

7. Turn Raise Dual USB Charger Aluminum Switch

Why We Love It:

Able to work in a diversity of arrangements, Turn Raise Dual USB Charger Switch is a must-have for RVers that travel year-round. As it contains a LED display, the battery monitor made by Turn Raise allows owners of recreational vehicles to determine battery voltage with a glance. Also, the inclusion of an on/of switch facilitates the activation and deactivation of Turn Raise Dual USB Charger Switch based on user demands. Therefore, the battery monitor from Turn Raise guarantees hassle-free supervisions of RV battery banks. 

Conveniently, Turn Raise Dual USB Charger Switch is equipped with a built-in dual USB socket for charging electronics. As a result, if you head out with the battery monitor of Turn Raise, keeping your smartphones, tablets and laptops charged would be a cinch. Being compliant to FCC and CE standards, Turn Raise Dual USB Charger Switch operates without problems in diverse conditions. The Turn Raise battery monitor is rated at IP65 too so it should have an easy time handling water drops. 

Thanks to an emphasis on load cycle, Turn Raise Dual USB Charger Switch holds up a long time in use. When you grab the battery monitor from Turn Raise, you don’t have to think about replacing it for years.


  • Low-priced 
  • High endurance 
  • Nice charging ports 


  • A couple of users report receiving mismatched units 
  • Loosed wire connect is noted 

8. Innova 3721

Why We Love It:

Made to plug directly into the cigarette lighter to monitor batteries and charging voltages, Innova 3721 is simple to use and takes mere seconds to install. Naturally, 3721 is prized by owners of recreational vehicles that lack time and patience to set up a sophisticated RV battery monitor panel with tedious installations. Moreover, the Innova battery monitor is a quick-detach model which meant RVing enthusiasts could regain the use of the cigarette lighter at any time. Owing to uncomplicated maintenance, Innova 3721 requires minimal attention from people in the course of operation. 

Through the LED display of the battery monitor from Innova, RVers would have no trouble supervising the status of the battery bank on the road. Additionally, by keeping watch over indicator lights of 3721, people can casually deduce the charging stage. Since the display and the indicator lights of Innova 3721 happen to be mounted on a pivoting head, applying changes to the viewing angle is essentially a walk in the park. Because of that, the battery monitor of Innova outmatches many of its competitors in terms of ease of checking readings. 

About affordability, Innova 3721 is budget-friendly so there is no need to empty your wallet in order to purchase it. As proof of confidence, Innova willingly backs its battery monitor with a one-year warranty. 


  • Compact
  • Long-lasting 
  • Impressive precision 


  • Quality control needs improvements 
  • Occupies the cigarette lighter

9. Proshopping 20190709001

Why We Love It:

As a low-profile battery monitor that easily fit narrow applications, Proshopping 20190709001 is considered to be a superb addition to recreational vehicles with limited interiors. Featuring commendable handling characteristics, the battery monitor from Proshopping takes minutes to position and secure. With universal compatibility, 20190709001 could also pair with a lot of batteries such as lithium, lithium-ion, lead-acid and more. Thus, Proshopping 20190709001 is held in high esteem by plenty of RVers, novices and veterans alike. 

The interface of 20190709001 consists of a LED display and a switch that permits enthusiasts of RVing to choose between battery capacity, voltage and activation/deactivation. For RVers that prefer to have something that carries a user-friendly interface, the battery monitor of Proshopping is the best battery monitor for RV for its price range nowadays. The display of Proshopping 20190709001 comes with a robust PVC screen protector too so it would remain virtually intact when subjected to vibrations and moderate impacts. 

Proshopping 20190709001 is a breeze to maintain and that makes it a favorite of full-time RVers with few opportunities to perform maintenance on the equipment. Since the battery monitor made by Proshopping Proshopping costs much less than its contemporaries, its replacement expense is quite reasonable. 


  • Installation is no-nonsense 
  • Trouble-free maintenance
  • Terrific display 


  • Delivery service is mediocre 
  • Poorly-written owner’s manual 


Why We Love It:

Being assembled for comprehensive measuring, MICTUNING MIC-DVG-015 lets people supervise voltage, current, power and energy consumption all at once. Possessing a flush interface with backlighting, MIC-DVG-015 ensures that enthusiasts of RVing could manage batteries from dusk till dawn. In addition to that, since the MICTUNING battery monitor integrates a memory function, it’s capable of remembering performance data. To reset the data of MIC-DVG-015 of MICTUNING, people just have to press the front function button two times (one short and one long). 

Boasting wide supervision ranges, the battery monitor of MICTUNING is compatible with an assortment of battery banks of battery recreational vehicles. With its rapid measuring rate, MIC-DVG-015 provides real-time updates about the status of batteries to RVing enthusiasts. It’s noteworthy that MICTUNING MIC-DVG-015 draws little electricity in the course of operation. That is why the battery monitor made by MICTUNING receives a shower of praise from owners of power-hungry rigs. 

MICTUNING MIC-DVG-015 is a space-saving model so RVers don’t have to leave behind items to accommodate it. As its installation is rather basic and only involves ordinary tools as well, MIC-DVG-015 could be set up in a blink of an eye. Upon purchase, the MICTUNING battery monitor is accompanied by a one-year warranty which gives much-needed peace of mind. 


  • Inexpensive 
  • Adaptable and versatile 
  • Excellent wiring diagram 


  • Customer service is barely acceptable 
  • Certain units arrive non-operational


Why We Love It:

Built to the latest standards, DYB-90 of WATERWICH is undoubtedly a great companion for today’s owners of recreational vehicles. Being a mini-size model, the battery monitor made by WATERWICH hardly takes up space so RVers should have an easy time optimizing the interior. Also, DYB-90 contains mounting holes and utilizes an innovative twist-and-lock system so its setup process is no sweat. As a result, enthusiasts of RVing could get WATERWICH DYB-90 up and running in moments. 

Since DYB-90 is waterproof and flame-retardant, it operates reliably in all surroundings and that leads to clean operating records. Besides that, the battery monitor from WATERWICH is protected against reverse polarity too so it sustains no damage when people make mistakes in the wiring. Thanks to a combination of three-digit display and multi-color indicator, DYB-90 of WATERWICH is able to keep RVers aware of the battery condition. Once there seem to be problems with the batteries, DYB-90 would twinkle to alarm RVers.

Coming to the market at an economical price, WATERWICH DYB-90 is appreciated by RVers that have somewhat tight shopping budgets. In the case that you don’t like to spend big bucks but still desire a decent RV battery monitor, DYB-90 is what you need.


  • Enduring 
  • Brilliant interface 
  • Setup process is straightforward 


  • Users complain about units acting up in use
  • Readings occasionally appear blurred 

12. Ancel BM300

Why We Love It:

Packing pretty much everything that RVers expect of battery monitors for recreational vehicles, Ancel BM300 rarely lets its user down. With Bluetooth connectivity, BM300 helps people supervise their battery bank remotely and come up with appropriate solutions for potential problems. Furthermore, the battery monitor from Ancel is engineered with a swift refresh rate for real-time supervision of battery banks. Because of that, if you have Ancel BM300 on your rig, managing batteries is going to be a simple matter. 

The battery monitor made by Ancel could readily pair with AGM, gel and other types of batteries so compatibility is usually less of a concern. Additionally, compared to regular RV battery monitors on the market, BM300 is quite small which saves space inside recreational vehicles. About installation, the setup process of Ancel BM300 is hassle-free so you don’t need to be a professional mechanic to get it operational. When it’s properly positioned and secured, the Ancel battery monitor would work without a hitch for years to come. 

One interesting thing about the BM300 of Ancel is that it can analyze the status of battery banks and record one month’s worth of data. Hence, with the battery monitor from Ancel, maximizing the longevity of batteries is a piece of cake in most cases. 


  • Resilient 
  • Well-designed 
  • Marvelous handling 


  • Signal range deviates from time to time 
  • App intermittently freezes up 

13. MICTUNING LED Digital Double Monitor

MICTUNING LED Digital Double Voltmeter, Round Panel Voltage Monitor Blue for Car Pickup RV Truck...
Dimensions: 1.9 x 1.9 x 0.9 Inches
Weight: 0.0 4 Pounds
Two digital displays
ABS plastic
Wear and tear-resistant

Why We Love It:

Put together with an emphasis on compactness, MICTUNING MIC-DV-078R is a slim and sleek unit with splendid handling. Regardless of the settings, the battery monitor for recreational vehicles of MICTUNING could be positioned and fastened in a flash. Incorporating ABS plastic and black matte finish, MIC-DV-078R is also resistant to wear and tear over time too. As a result, MIC-DV-078R of MICTUNING is good at maintaining its aesthetics and that keeps it from standing out like a sore thumb. 

Coming with two digital displays, MIC-DV-078R permits RVers to supervise main and auxiliary batteries at the same time. When the charge of batteries runs low, the MICTUNING battery monitor would send out warnings at once so the risk of dead batteries is low. For safety, MICTUNING MIC-DV-078R is protected against a diversity of issues including over-current, over-voltage, short-circuit, … Therefore, with outstanding built-in protections, MIC-DV-078R hardly experiences noticeable troubles in use. 

On arrival, MICTUNING MIC-DV-078R comes alongside a reassuring one-year manufacturer warranty that covers problems caused by defects. Unsurprisingly, MIC-DV-078R is positively received by owners of recreational vehicles that like to have a sound insurance policy. 


  • Nice accuracy 
  • Easy to install 
  • Superb conductivity pins 


  • Non-responsive display is reported 
  • Particular parts need strengthening  

14. DROK 2001712003

Why We Love It:

Despite its plain appearance and unexceptional ratings, 2001712003 of DROK remains a terrific battery monitor that gives a good account of itself in lots of applications. Owing to its bi-direction measuring ability, the battery monitor made by DROK precisely measures the forward and reverse currents. Moreover, with STN screen and backlight control, 2001712003 keeps the readings visible in numerous lighting conditions. Needless to say, DROK 2001712003 is well-liked by enthusiasts of RVing that value situational awareness and like to keep their battery banks in top shape. 

In the course of operation, 2001712003 would deliver up-to-date data of the batteries to RVers while consuming small amounts of electricity. Thus, with battery monitors of DROK, owners of recreational vehicles could supervise their battery banks without stressing the power grid. In addition, DROK 2001712003 is created with integral data storage so there is no need to worry too much about lost data when the energy supply suddenly experiences interruptions. Finally, since 2001712003 carries an on/off switch, you don’t need to temporarily remove the wires to shut it down. 

DROK 2001712003 possesses extended compatibility, therefore, it’s capable of working smoothly with lead-acid, lithium, lithium and other typical batteries. The installation of the battery monitors from DROK is a snap as well which greatly speeds up the setup process. 


  • Reasonable price
  • Prompt shipping 
  • Brightness is top-notch 


  • Require calibrations now and then 
  • Slightly short wire harness 

15. Blue Sea Systems M2

Why We Love It:

So versatility is your primary priority once it comes to battery monitors for recreational vehicles? In that case, it’s strongly recommended that you spare time and take a look at Blue Sea Systems M2. Able to measure current on two independent circuits, M2 lets you maintain supervision on your batteries in plenty of arrangements. The battery monitor od Blue Sea Systems also happens to boast excellent measuring ratings as well so you could use it with expanded battery banks. 

M2 of Blue Sea Systems is equipped with an OLED display that is visible throughout the day so checking the readings is just a cinch. Featuring auto-dimming, the display of the battery monitor from Blue Sea Systems adjusts its brightness based on ambient lighting. As a result, for RVers that hate to calibrate equipment constantly on the road, M2 is certainly a worthwhile investment. Lastly, with a rating of IP66, Blue Sea Systems M2 resists drops of water well. 

The price of the battery monitor made by Blue Sea Systems is steep but it would save enthusiasts of RVing money in the long run. To reassure potential customers, Blue Sea Systems even backs M2 with a three-year warranty. So those that opt to pick up Blue Sea Systems M2 have something to count on if problems take place. 


  • Quick installation 
  • Maintenance is a cakewalk 
  • Sublime level of precision 


  • Costly 
  • Ambiguous owner’s manual

Critical RV Battery Monitor Considerations

Different models have different specifications and features but unless you wish to waste time and money on mediocre batteries monitor, you should remember these criteria 

DISPLAY: Generally, the purpose of battery monitors is to help people supervise the status of the battery bank so the display needs to receive special attention. You have no need for a model that makes you struggle to get a clear view of numbers and symbols. To avoid headaches, it’s imperative that you check out the size, color, contrast, … of the display while assessing RV battery monitors on the market. Take your rig and aspects of your travels into account to reach a wise conclusion. 

RATING: Similar to the batteries, battery monitors for recreational vehicles have two important ratings that require thorough consideration: ampere and voltage. To calculate ratings for your monitor, it’s best that you use the characteristics of your battery bank as guidelines. If your rig is powered by a typical battery bank, standard models would be enough. On the other hand, if you own a power-hungry rig that necessitates the use of various high-capacity batteries, prioritize monitors with elevated ratings. 

INTERFACE: As you embrace RVing, you have to tackle plenty of things so you don’t want to deal with more stress from complicated battery monitors. Because of that, to pick up the best RV battery monitor for your rig, it’s strongly recommended that you keep user interface in mind. Don’t commit to a purchase until you know for sure that you could grasp and manipulate the interface of the chosen model in use. Beside evaluating market monitors directly you should take a close look at reviews written by other RVers and see what they say about particular models. 

EASE OF INSTALLATION: You don’t have to be an expert mechanic to set up modern-day RV battery monitors but ease of installation remains a key concern. Usually, just by reading the owner’s manual of models, you would be able to acquire relevant details about the mountings, accessories, tools and more. That is going to let you remove monitors with draw-out setup processes from your shortlist and save some time. Think about your own abilities and then decide accordingly. 

BUDGET:  “You get what you pay for”  is applicable to a wide range of items and the RV battery monitoring system is also not an exception. In order to secure a model with appropriate capabilities, it’s essential that you put together a sound budget based on your demands and desires. By doing so, you could quickly determine the suitability of battery monitors that you come across and eliminate needless spendings on less than ideal models. It’s worth pointing out that expensive price tags don’t automatically indicate superior values. 

Types Of RV Battery Monitor System

Countless battery monitors for recreational vehicles exist but today’s models can be split into two types: wired and wireless.  

  • Wired Battery Monitors: Capable of maintaining comprehensive supervision over batteries in a lot of environments, wired battery monitors prove well-suited for year-round travel. In addition to that, models of the type come in multiple ratings so they match an assortment of battery banks. Regarding downsides, the installation of wired battery monitors involves skills and they have mediocre expandability.
  • Wireless Battery Monitors: As the name suggests, wireless battery monitors operate on wireless connections (Bluetooth). Because of that, models of type could be set up in a blink of an eye and they have rather undemanding maintenance requirements as well. However, the performance of wireless monitors is prone to interference and limited to specific ranges. 

Popular Brands Of RV Battery Monitors

Monitors for RV batteries on the market come from numerous brands but in terms of reputability, a number of names stand out from the rest 

Victron – Recognized as one of the leading brands of energy tools, Victron is held in high esteem by all sorts of RVers from novices to veterans. Concerning reliability and consistency, Victron battery monitors for recreational vehicles outmatch most of their contemporaries. 

DROK Specializing in electronics and associated accessories, DROK is known for assembling solid products that could quickly adapt to changing situations. In the case that you place versatility above all else, you should consider getting your RV battery monitor from DROK.

MICTUNING As a long-established brand, MICTUNING possesses substantial experience once it comes to designing models based on expectations of customers. Moreover, battery monitors made by MICTUNING reach the market in an array of price points so they suit the budgets of ordinary enthusiasts of RVing. 

bayite Thanks to continuous investments in technology updates and optimization of its product, bayite manages to create highly adaptable battery monitors that hold together for years. For owners of recreational vehicles that don’t have many opportunities to replace equipment, bayite models should be great choices. 

How to Install a Battery Monitor to RV

To install an RV battery monitor, motorhome owners have to go through the following steps. In case if you don’t feel confident about not doing this by yourself, take help from a professional:

1. Getting a Battery Monitors

The first step of this procedure is to choose and purchase a battery monitor unit or kit. There are many available in the market and while selecting, make sure that each unit’s display device is mountable in a panel where it is visible without any difficulty.

A shunt or a precision resistor is mandatory for all battery monitors. Users have to install the shunt in the negative battery cable. Current passes through this shunt while going into or out of the battery. It acts more like a transformer, which transfers the signal to the battery monitor through the lighter-gauge wiring.

2. Planning the Layout

RV owners can choose any place to mount the display. But, plan the position properly to ensure maximum convenience while checking the monitor display. It is a wise decision to place it where one can easily access the living space of the RV. If the monitor has a lengthy cable, you can put it far away from the battery.

Sometimes, choosing the right spot is the most complex part of the whole process, if the installation takes place in an existing system.

3. Perform Pre-Installation Wiring

As the shunt does the measurement part and the shunt has to make a connection to the negative cable, users have to perform some wiring before proceeding to the prime installation. So, for the correct calculation of amps, nothing except the shunt should remain connected to the negative battery cable. Otherwise, the shunt will fail to count that.

A bus bar is a perfect option for connecting all things. The negative wire goes to the shunt, and the bus bar connects the shunt to all the devices in the wiring process.

4. Install the Display

Now is the time to install the display to the place you have chosen already. Several models of display units have only one cord (something like a phone cord and snap-in plugs) for the connection with the shunt. In such cases, there is no scope for the mistake.

5. Install the Shunt

Up next is the process of mounting the shunt. After that, you need to do its wiring too. Take a negative cable of sufficient length that connects the battery to the bus bar. Now, establish a connection between the shunt and the bus bar. Also, put a wire from the battery to the shunt on a short jumper.

6. Put Power Connection to the Shunt

Connect the positive wire to the shunt and provide power for the monitor. Some battery monitors have a large ring terminal on one end or a straight crimp along with a power wire with a fuse in between. For the latter type, take out the fuse before making the connections.

Users have to put the straight end inside a crimp connector of the shunt. To open the connector, press the middle of the orange thing slide towards the shunt using the tip of a spade (straight) screwdriver. When the hole opens, put the shoelace end there. After almost the whole end goes into the hole, release the screwdriver.

battery monitor for rv
Install at a suitable place.

7. Connect the Power Wire to the Shunt of RV Battery Monitor

At this point, users may connect the ring end to a positive battery post or the positive bus bar. In the case of the latter option, one has to replace the large ring with a smaller one. When connected to the battery, fuse removal will turn off the monitor. Else, it will remain switched on.

8. Changing Parameters

This is the last step of the whole RV battery monitor installation process. It is time to reinstall the fuse as you have already established all the connections between the batteries, shunt, and battery monitor. As soon as the reinstallation takes place, the display will turn on. Then, it will prompt to enter the amp-hour capacity of the battery bank. If there are two banks, it will be the back with a connection to the shunt.

At this stage, users can redefine some parameters like how the monitor determines that the batteries are “fully charged,” its charging pattern. In case users are not familiar with the given variables, it is better to leave it as it is and use it with default parameters.

One parameter that demands change is “charge efficiency.” Usually, the default is 95%, and one should change it to 85%. The reason is that maintaining 95% efficiency is something unrealistic considering voltage drops and other charging circuit inefficiencies. It will also make the users believe that batteries do not have enough charge when that is not the case.

FAQs bout RV Battery Monitors

What needs to be done to keep the monitors in top shape? 

Monitors for batteries of RV tend to have sealed construction so there is no need to give them unique treatment. Just keep your battery monitor from direct element exposure and it would stay in working condition for a long time. 

Do battery monitors display charge level in percentage? 

While lots of monitors display the charge level of paired batteries in percentage, some don’t so you should be thorough and take a look at the owner’s manual. It’s noteworthy that a couple of models let people decide the way to supervise the charge level of batteries. 

Is it possible to deactivate battery monitors?

Outside of use, common battery monitors for recreational vehicles could be deactivated but the method varies a bit between models. As a result, to safely turn off your monitor, it’s best that you refer to the owner’s manual. If you notice something odd, get in touch with the manufacturer for information and guidance. 

Where should I buy monitors for RV batteries?

You would be able to purchase battery monitors for your rig in RV hardware shops. Don’t want to go out of your way so as to visit such stores? Then you have to think about ordering your monitor from online retailers like Amazon, eBay, …

You can also find our guides on how to choose the best RV battery, best lithium battery for RV, best AGM battery, best RV battery box, best RV surge protector, best RV generator, best solar-powered generator for RV, best solar panels for RV, best RV converter, best RV inverter, best deep cycle battery chargers, best trickle chargers, best solar charge controller for RV with detailed reviews in RV Electrical category. In these reviews, we only include and recommend the best products with the highest ratings among highly sold products on the market.

About Chris Coleman

Chris Coleman is an interesting travel blogger and outdoor photographer with a great sense of humor. He owns an RV Accessories shop in New York City so he has the knowledge necessary to provide thorough reviews and give advice on how to choose the right products for RV travel. He puts all that RV knowledge and experience to good use in his sharing posts. Besides product buying guides/reviews, Chris also writes informative articles, how-to articles and RV camping guides in his own interesting viewpoint. Chris’s blog is one of the most reliable information sources for RV campers no matter if you're an expert or a determined beginner.

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