12V deep cycle battery charger

The 12 Best Deep Cycle Battery Chargers to Buy In 2020

Chris Coleman

Virtually all RVers from novices to veterans know the importance of keeping the batteries charged. If the batteries run out of charge, electrical appliances on recreational vehicles would be rendered inoperable and that is certainly going to impair travel experience.

So if you wish to enjoy your time in the outdoors, it’s essential that you keep a deep cycle battery charger on your rig. With a charger around to keep the battery bank at full charge, you could casually put the appliances on your RV to good use and optimize your comfort level.

Have a hard time telling which model on the market is the best deep cycle battery charger for your RV? If that is the case then this article may be able to help you out.

Deep Cycle Battery Charger Basics

What Is A Deep Cycle Battery Charger?

As the name suggests, a deep cycle battery charger is a purpose-design charger used to charge deep cycle batteries. Compared to normal batteries, deep cycle ones have solid and thick plates so they should be charged with dedicated chargers.

How Does It Work?

All in all, the deep cycle battery charger works just like its normal counterpart: it charges the battery bank till the max capacity is reached. A couple of models would even provide trickle charges to tackle self-discharge and keep the batteries at full charge.

Benefits of Deep Cycle Battery Charger

  • Extend The Lifespan Of Batteries: Nothing lasts forever but if you charge your deep cycle batteries with a quality charger, it would be years before you have to replace them. That undoubtedly helps save a lot of effort and money.
  • Keep The Electrical Appliances Running: By keeping a battery charger by your side while traveling, you should have an easy time keeping the battery bank of your rig fully charged. With batteries at full charge, you could use the appliances to your heart’s content.
  • Open Up New Travel Options: If you hit the road with a deep cycle battery charger onboard, you can recharge the batteries at your leisure. Hence, you don’t have to plan the route around locations that offer charging services.

Types Of Deep Cycle Battery Chargers

Using operational characteristics, it’s possible to split RV deep cycle battery chargers into three types: charger, restorer and maintainer

Battery Chargers: Basic and practical, battery chargers simply deliver power to the batteries and get them back to full charge. Being highly adaptable, models of the type consistently give a splendid account of themselves in a wide range of arrangements.

Battery Restorers: Engineered to break up accumulations of foreign contaminants in the battery cells, which obstructs flows of charge, battery restorers prove to be excellent choices for well-used batteries. Models in the type tend to come at steep prices.

Battery Maintainers: With the ability to keep power in the cells from discharging, battery maintainers could keep batteries at full charge for a long time. Naturally, models of the type get a shower of praise from RVers that travel extensively.

Reviews On Best Deep Cycle Battery Chargers

All in all, there is no such thing as the best deep cycle battery charger but certain models indeed offer more values than the rest. Check out the models down below if you like to get your money’s worth.

NoBest Deep Cycle Battery ChargersVoltageAmperageOur Ratings
1Black+Decker BC2WBD12V2Amp*****
2NOCO Genius GEN112V10Amp*****
3Battery Tender Plus 021-012812V1.25Amp*****
4Schumacher SC12816/12V6/2Amp*****
5Black+Decker BM3B6/12V1.5Amp***
6NOCO Genius G1500012/24V15Amp****
7BatteryMINDer 150012V1.5Amp*****
8Schumacher SE-1-12S6/12V1.5Amp*****
9Optima Digital 40012V4Amp*****
10TecMate OptiMATE 612/24V5/2.5Amp*****
11Ampeak CGUFB202512V2/10/25Amp****
12Jethax JET-191112V4Amp*****

1. Black+Decker BC2WBD – Best Of The Best

Black+Decker BC2WBD Deep Cycle Battery Charger
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  • Dimensions: 5.13 x 3.60 x 8.25 Inches
  • Weight: 1.5 Pounds
  • Voltage: 12V
  • Ampere: 2Amp

Why This Is The Best:

Owing to its sealed housing, Black+Decker BC2WBD is good at resisting dust, oil, moisture, … which let it maintain stable operation in various environments. The 12V deep cycle battery charger of Black+Decker happens to be quite light as well so RVer could move it around quickly and effortlessly. In addition to that, BC2WBD offers up to three connection methods: DC accessory plug, terminal ring and battery clamps. Because of that, Black+Decker BC2WBD is deemed to be the best deep cycle battery charger for standard rigs.

As BC2WBD is an automatic battery maintainer, you may leave it connected to the battery bank of your vehicle for long periods of time. With built-in circuit protection, the Black+Decker model is secured against overcharge, short-circuit, reverse-polarity and so on. Interestingly, Black+Decker BC2WBD has low-voltage compensation and that is why it’s able to deliver maximum charge once paired with extension cords. Packing a combination of hanging hook and magnetic backing, BC2WBD also proves to be a breeze to set up.

Available at a reasonable price, the battery charger made by Black+Decker suit the budget of the average RVing enthusiast. To reassure customers, Black+Decker willingly backs BC2WBD with a one-year manufacturer warranty that brings peace of mind.

I use this charger almost everyday on a vehicle with dual batteries. At times the rig does not get driven for days and in the past the computer would drain the cranking battery pretty quickly. This charger allows me to keep both batteries topped off. The magnet on the back works great for mounting the unit on the side of a car or on a hood. Also the unit has preformed well in the rain without tripping any barkers.

Shared by Paul S.


  • Affordable
  • Light and compact
  • Resilient construction


  • Customer service could use some work
  • Users notice charging difficulty in cold climates

2. NOCO Genius GEN1 – Editor’s Choice

NOCO Genius GEN1 Deep Cycle Battery Charger
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  • Dimensions: 10.2 x 9.2 x 5.8 Inches
  • Weight: 3.8 Pounds
  • Voltage: 12V
  • Ampere: 10Amp

Why It’s An Editor’s Choice:

By employing innovative charging technologies, Genius GEN1 of NOCO provides charge twice as fast as traditional deep cycle battery chargers. Therefore, with the NOCO charger on your rig, you don’t have to wait too long for the battery bank to get to full charge. Since it could stabilize the chemistry of cells, Genius GEN1 lengthen the battery change interval. Moreover, if NOCO Genius GEN1 detects sulfation, lost capacity and alike, it would promptly apply high-voltage charges to restore the quality of the cells.

Rated at IP68, Genius GEN1 remains perfectly operational even after being submerged deep underwater for multiple hours so water intrusion is going to be inconsequential. Aside from that, with a low-profile build, the battery charger made by NOCO occupies a negligible amount of space. As a result, for owners of small recreational vehicles that travel around the year, Genius GEN1 of NOCO is the best deep cycle battery charger. Genius GEN1 is protected against an assortment of issues from sparks to thermal runaways too.

In terms of installation, NOCO Genius GEN1 could be set up and mounted onto plenty of applications in mere moments. The battery charger of NOCO requires basic care compared to most of its competitors nowadays so keeping Genius GEN1 in working order should be just a walk in the park.  

I have this charger installed under my hood in my truck connected to shore power. It does a nice job of bringing the voltage up to around 14 and keeping it level when the battery goes down. I plug my truck in to this every time I park in my garage and it keeps things fully topped off for me.

Shared by Tucker M.


  • Nice handling
  • High endurance
  • Sublime charging rate


  • A few units arrive defective
  • Reports about boiled batteries show up intermittently

3. Battery Tender Plus 021-0128 – Editor’s Choice

Battery Tender Plus 021-0128 Deep Cycle Battery Charger
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  • Dimensions: 4.75 x 2.75 x 2.75 Inches
  • Weight: 4.3 Pounds
  • Voltage: 12V
  • Ampere: 1.25Amp

Why It’s An Editor’s Choice:

Robust and simple to use,  Battery Tender Plus 021-0128 is held in high esteem by numerous RVers from novices to veterans. Capable of automatically changing to float mode as the max capacity is reached, Plus 021-0128 could keep deep cycle batteries at full charge without overcharging them. Also, the battery charge from Battery Tender is designed with top-notch temperature compensation so its charging rate should stay consistent regardless of ambient temperature. Possessing a lightweight body, Battery Tender Plus 021-0128 is portable too.

Thanks to the colored LED lights on the housing, determining the stage of charge with Plus 021-0128 is child’s play. Additionally, if the battery voltage drops under load for some reason, the  Battery Tender model would switch to ISM adaptive charging and resume full output. Similar to other modern-day battery chargers, Battery Tender Plus 021-0128 boasts integrated protection which leads to increased level of safety. Since Plus 021-0128 is a low-maintenance deep cell battery charger, RVing enthusiasts don’t have to give it special attention.

About post-purchase support, Battery Tender backs its unit with a solid ten-year warranty. In the case that you want to have an insurance policy while buying things, Plus 021-0128 is the best deep cycle battery charger you could get.

I have a pickup that I use mostly for towing and RV. It sits a lot and I was having problems of the battery draining. I figured it would be better to keep the battery charged than to ruin the battery. This unit is small and easy to use. It comes with two ways of connecting to the battery. One has battery clips and the other has ring terminals so that you leave it attached to the battery and just unhook the charger with the quick disconnect. I used the cable with the ring terminals and stuck the cable out the front of the truck. I now can hook up the charger without opening the hood. When I first hooked it up it took a couple hours to charge the battery and now light stays green all the time. This is a great unit and easy to use. I am glad I bought it.

Shared by JKR789


  • Setup process is intuitive
  • Dependable and reliable
  • Outstanding resistance


  • Less than ideal quality control
  • Get hot now and then

4. Schumacher SC1281

Schumacher SC1281 Deep Cycle Battery Charger
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  • Dimensions:  7.25 × 10.75 × 11.13 Inches
  • Weight: 12.65 Pounds
  • Voltage: 6/12V
  • Ampere: 6/2Amp (continuous), 30/100 Amp (boost)

Why We Love It:

As it incorporates a microprocessor that regulates power output, Schumacher SC1281 steadily optimizes charging time and maintains charges of the batteries at the same time. The multi-stage nature of its charging process means SC1281 excels at increasing the lifespan of the battery bank too. Thus, the charger made by Schumacher is considered to be the best deep cycle battery charger for those that care about the integrity of batteries. With Schumacher SC1281, your batteries should last through many seasons before they must be replaced.

Being compatible with typical batteries used in recreational vehicles, the Schumacher unit could charge AGM, gel and deep cycle batteries. That is why SC1281 works pretty well on a wide range of battery banks that contain batteries of various types. Furthermore, as Schumacher equip SC1281 with voltage detection, it’s able to tell 6V and 12V batteries apart upon hookup. Besides that, if the battery charger from Schumacher notices reversed clamps, it would refuse to operate until RVing enthusiasts put the clamps on correct polarities.

Since it utilizes a straightforward interface with LED display and start/stop push button, SC1281 earns positive remarks from countless deep cycle battery charger reviews for its ease of use. By taking a glance at the interface, you could grasp key details about the charging and proceed to react accordingly.

 Light weight and works well

The charger works as advertised. As with any charger it is important to remove any latent surface charge from the battery so the charger can read an accurate voltage. I found this charger read accurate battery charge. If you find it was at say 70% while charging, you disconnect and reconnect and it says 100% that is the surface charge. Turn your headlight on for 30 seconds before connecting the charger the second time and it will read accurately.

Shared by Christopher Moberg


  • Versatile
  • Fair cost
  • User-friendly control


  • People complain about loosed parts
  • Readings may be imprecise

5. Black+Decker BM3B

Black+Decker BM3B Deep Cycle Battery Charger
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  • Dimensions: 8.00 x 3.00 x 2.00 Inches
  • Weight: 1.2 Pounds
  • Voltage: 6/12V
  • Ampere: 1.5Amp

Why We Love It:

Despite its low price, Black+Decker BM3B is loaded with virtually everything RVers need to recharge deep cycle batteries. Engineered with a voltage sector, the battery charger from Black+Decker could be used to charge 6V and 12V batteries. In addition, as the batteries get fully charged, BM3B would stop charging and switch to float charge by itself. Because of that, Black+Decker BM3B is the best deep cycle battery charger at its price range for RVing enthusiasts that wish to keep batteries of stored rigs at max capacity in off-seasons.

Since the housing of BM3B is made from enduring plastic, it’s rather light and handles physical shocks superbly. With mounting brackets, setting up the charger of Black+Decker is essentially a piece of cake in usual vehicle layouts. As for battery connection, BM3B of Black+Decker offers RVing enthusiasts two methods: battery clips and O-ring terminals. Hence, you should have an easy time matching BM3B to the battery bank of your rig which is a big plus if you don’t exactly have much time.

Like its cousins, the Black+Decker battery charger has low voltage compensation to make up for voltage loss in use. As a result, BM3B could still deliver full rated charges if connected to deep cycle batteries through extension cords.


  • Economical
  • Marvelous portability
  • Structural strength is splendid


  • Owner’s manual is poorly written
  • Some users report chargers arriving rusted

6. NOCO Genius G15000

NOCO Genius G15000 Deep Cycle Battery Charger
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  • Dimensions: 14.10 x 4.80 x 2.80 Inches
  • Weight: 6.5 Pounds
  • Voltage: 12/24V
  • Ampere: 15Amp

Why We Love It:

Built as an all-purpose smart deep cycle battery charger, Genius G15000 of NOCO is capable of meeting the charging needs of practically every RVer. With the ability to charge multiple types of batteries from lead-acid to deep cycle, Genius G15000 proves to be unrivaled in terms of adaptability. Aside from that, the NOCO charger is a fully automatic model so when plugged in, it would monitor and maintain batteries without requiring outside interaction. Spark proof and reverse-polarity protected, NOCO Genius G15000 is very safe to use too.

In the usual cases, the battery charger of NOCO should provide batteries with charge and keep them at max capacity. But if necessary, RVers could use Genius G15000 to bring heavily sulfated batteries back to life and save a couple of bucks on battery replacements. Therefore, for full-time RVers that like to cut down expenses in the long run, NOCO Genius G15000 is the best deep cycle battery charger. As the NOCO unit carries LED indicators, it’s a breeze to determine the stage of charge at any time.

Regarding installation, NOCO Genius G15000 features a combination of external mounting holes and a non-slipping rubberized base so securing it is a cakewalk. The charger made by NOCO is sold alongside battery clamps with detachable terminals so you may put it to use the moment it leaves the packaging.


  • Sturdy and stable
  • Output is top-notch
  • Undemanding mainteance


  • High-priced
  • Wiring should be overhauled

7. BatteryMINDer 1500

BatteryMINDer 1500 Deep Cycle Battery Charger
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  • Dimensions: 3.93 x 2.55 x 1.18 Inches
  • Weight: 3.0 Pounds
  • Voltage: 12V
  • Ampere: 1.5Amp

Why We Love It:

Effective and efficient, BatteryMINDer 1500 gives a good account of itself in plenty of environments and that earn it recommendations from many RV battery charger reviews. Fitted with a sensitive temperature sensor, the BatteryMINDer deep cycle battery charger makes precise voltage compensation based on ambient temperatures. That is why maintaining charge to batteries of recreational vehicles is a simple matter to 1500. By using BatteryMINDer 1500 to charge your batteries, it’s possible to increase the lifespan of the cells by several times.

As 1500 works with an assortment of batteries (flooded, sealed, AGM, deep cycle, …), you don’t have to worry about compatibility. In use, the battery charger made by BatteryMINDer can simultaneously charge and maintain up to four batteries in parallel if paired with a Y-connector. Additionally, with over-temperature,  reverse polarity and short-circuit protection, BatteryMINDer 1500 guarantees risk-free operation. Boasting LED indicators, 1500 keep users informed about the charging process as well as associated issues.

One interesting thing about the charger from BatteryMINDer is that it automatically desulfate batteries using a range of high frequencies. Thus, 1500 is particularly good at repairing sulfated deep cycle batteries that have seen substantial use. Since it comes at a highly affordable price, BatteryMINDer 1500 is the best deep cycle battery charger for budget-minded RVers. The BatteryMINDer unit is backed with a five-year warranty.


  • Well-made and rugged
  • Tech support is responsive
  • Nice values for the price


  • Inconsistencies between chargers
  • Corrosion resistance is kind of limited

8. Schumacher SE-1-12S

Schumacher SE-1-12S Deep Cycle Battery Charger
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  • Dimensions: 2.00 x 8.00 x 9.00 Inches
  • Weight: 2.5 Pounds
  • Voltage: 6/12V
  • Ampere: 1.5Amp

Why We Love It:

Designed for stored and cold weather applications, Schumacher SE-1-12S could keep deep cycle batteries at full charge as long as it’s plugged in. Since its operation is controlled by an advanced microprocessor, SE-1-12S could adjust amperage rates to suit variable charging settings. Moreover, the battery charger from Schumacher charges the batteries in stages so it enhances safety level and preserves the quality of the batteries as well. Featuring LED indicators,  SE-1-12S of Schumacher permits RVers to easily monitor the charging process.

With the presence of a durable molded plastic case, the Schumacher model resists water, oil, solvents and so on well. As a result, the reliability of SE-1-12S is superior to that of the average chargers for deep cycle batteries. Schumacher SE-1-12S is also a universal installation charger that could be attached anywhere from fender wells to battery trays. Accompanied by double-sided adhesive and cable tie, the deep cycle battery charger of Schumacher only takes moments to set up in ordinary recreational vehicles.

Thanks to the reverse-polarity protection, SE-1-12S is going to remain undamaged even if you mess up the polarities. Besides that, as it automatically detects voltage upon connection, the charger made by Schumacher can identify 6V and 12V batteries.


  • Reasonable price
  • Endurance is first-class
  • Compact and long-lasting


  • Certain people complain about receiving flawed units
  • Quality control still leaves something to be desired

9. Optima Digital 400

Optima Digital 400 Deep Cycle Battery Charger
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  • Dimensions: 7.10 x 3.90 x 2.70 Inches
  • Weight: 5.0 Pounds
  • Voltage: 12V
  • Ampere: 4Amp

Why We Love It:

So portability happens to be your main concern while shopping for deep cycle battery chargers? If that is the case, it’s strongly recommended that you check out Optima Digital 400. Utilizing a lightweight space-saving design, the deep cycle battery charger made by Optima could be moved into position in a blink of an eye. In addition to that, Digital 400 comes with a versatile hook and tilt stand which allows it to adapt to a wide range of battery arrangements.

Since it employs a microprocessor for intelligent charging, Digital 400 is able to maximize charging current and augment the performance of batteries at the same time. The Optima battery charger contains advanced protection against spark, reverse-polarity and overcharging, hence, it owns a sublime safety record. As for the interface, Optima Digital 400 has a flush LCD display and lots of built-in indicators for charging statuses. Digital 400 integrates backlighting as well so working with it in low-light conditions would be a walk in the park.

In terms of price, the unit of Optima is a bit expensive compared to standard chargers for deep cycle batteries. That being said, considering its solid values, Digital 400 is nevertheless a good buy for those that have money to spend. As proof of confidence, Optima backs its deep cycle charger with a three-year warranty. If your Optima Digital 400 fails due to manufacturing defects then you could claim a replacement.


  • Decent warranty
  • Fast recharges
  • Straightforward installation


  • Slightly costly
  • Shipping requires improvements

10. TecMate OptiMATE 6

TecMate OptiMATE 6 Deep Cycle Battery Charger
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  • Dimensions: 3.9 x 2.80 x 2.40 Inches
  • Weight: 3.1 Pounds
  • Voltage: 12/24V
  • Ampere: 5/2.5Amp

Why We Love It:

Carrying the latest microprocessor controlled circuitry, TecMate OptiMATE 6 automatically diagnoses the characteristics of connected batteries and sets suitable charging currents. Aside from that, OptiMATE 6 makes compensations for temperature: it raises the voltage when hot and drops the voltage when cold. Therefore, the charger of TecMate could quickly get batteries to full charge in adverse weather. TecMate OptiMATE 6 is capable of preventing cells from self-discharging over time too so it’s a splendid battery maintainer.

Engineered to charge typical batteries (AGM, gel, deep cycle,…) in 12V and 24V, OptiMATE 6 is a must-have for people that have multiple battery banks and don’t want to manage too many battery chargers. To use the TecMate model, all you need to do is to select the desired voltage then plug it in. If it notices a disparity between the voltage you choose and the voltage of your batteries, OptiMATE 6 of TecMate immediately displays warnings and refrains from charging. Also, the charger made by TecMate would cease operation if the connection is severed.

If you opt to get OptiMATE 6, TecMate is going to provide you with battery clips as well as lead cable. Because of that, if you need to charge your battery bank on the go, TecMate OptiMATE 6 should be the best battery charger for deep cycle batteries you could grab nowadays. The battery charger from TecMate is backed with a three-year warranty that covers defects.


  • Robust body
  • Impressive compatibility
  • Excellent delivery service


  • Confusing owner’s manual
  • Chargers draining batteries is reported

11. Ampeak CGUFB2025

Ampeak CGUFB2025 Deep Cycle Battery Charger
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  • Dimensions: 10.91 x 7.05 x 4.47 Inches
  • Weight: 5.21 Pounds
  • Voltage: 12V
  • Ampere: 2/10/25Amp

Why We Love It:

With comprehensive temperature protection, Ampeak CGUFB2025 performs as expected in extreme settings which make it the all-time favorite of RVers that enjoy off-roading. Furthermore, the microprocessor of the charger from Ampeak constantly monitors the status of connected batteries and refine the charging cycle based on data it gathers. As a result, CGUFB2025 could accelerate the charging process while preventing overheat, overcharge, short-circuit, … The front-mounted display lets RVers determine the current situation with just a single glance.

As it packs a smart detect system, CGUFB2025 instantly recognizes the voltage of batteries and that helps it come up with the ideal charging rates. Once the max capacity is reached, the battery charger of Ampeak would switch to float mode to maintain the charge. Besides that, owing to its small build and ergonomic handle, CGUFB2025 of Ampeak proves to be very simple to manipulate. CGUFB2025 is distributed with output cable so you don’t have to make separate purchases to set it up.

To reverse the damages sustained by batteries that have been left uncharged for a long time, the Ampeak battery charger possesses an advanced recondition mode. Thus, if you have CGUFB2025, restoring severely depleted batteries should be a piece of cake. In times of need, it’s possible to use Ampeak CGUFB2025 to get low-capacity to batteries to start engines using the start aid function.


  • Easy to install
  • Cable included
  • Fantastic ruggedness


  • Barely acceptable packaging
  • Unresponsive support

12. Jethax JET-1911

Jethax 12V 4A Smart Battery Charger
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  • Dimensions: 6.0 x 4.0 x 3.2 Inches
  • Weight: 0.9 Pounds
  • Voltage: 12V
  • Ampere: 4Amp

Why We Love It:

Basic and practical, Jethax JET-1911 is well-liked by RVing enthusiasts that wish to get a no-nonsense battery charger. Being a three-in-one model, JET-1911 charges, repairs and maintains deep cycle batteries depending on the requirements of users. The deep cycle battery charger made by Jethax is also designed and tested to address overheat, overcharge, reverse-polarity, spark, …. That is why Jethax JET-1911 is widely considered to be one of the leading battery chargers in terms of safety.

Equipped with both heavy-duty alligator clips and ring terminals, the Jethax battery charger only takes moments to set up. Since it supports nearly every type of battery, JET-1911 is compatible with an assortment of battery banks used by RVers. The charging process offered by Jethax JET-1911 consists of multiple stages so the lifespan of batteries would be extended too. Using ambient temperature as references, the battery charger from Jethax automatically changes between summer and winter operating mode to deliver appropriate charges to the batteries.

Since it’s constructed with top-notch ABS plastic, JET-1911 is relatively light but it could withstand bumps and hits. Regarding the interface, the charger from Jethax has a handy display that shows the voltage, charge level and operating mode. Hence, it’s a breeze to monitor the charging process if you use Jethax JET-1911.


  • Highly affordable
  • Durable and portable
  • Adaptable charging


  • Many units without instructions
  • Get slightly hot on occasions

Deep Cycle Battery Chargers Buying Guide

RVing enthusiasts have contrasting opinions about what could be called the best RV battery charger. That being said, to make a wise investment, it’s strongly recommended that you keep the following issues in mind.


In layman’s terms, the output of a charger is the amount of electricity that it provides to the batteries which determines how fast the batteries get to full charge. To calculate the ideal output for your charger, it’s important that you consider the power consumption of your rig. If you don’t need a lot of power to keep the appliances on your RV running, a standard charger is going to be adequate. On the other hand, if you happen to own a power-hungry rig, you have to prioritize high-output chargers.


Equipment on recreational vehicles, including battery chargers, tend to be exposed to bumps and shocks as RVers move between locations. Because of that, while assessing deep cycle chargers available for purchase, it’s key that you pay attention to endurance. You should be able to tell if a particular battery charger could hold together by taking a close look at its material, construction and alike. Besides making direct evaluations, it’s a good idea to read reviews written by fellow RVers to gather relevant details.


It’s common knowledge among RVing enthusiasts nowadays that space is a luxury on recreational vehicles so you need to think it through prior to adding anything to your rig. The last thing you want to pick up is an oversized battery charger that your RV is incapable of accommodating. Overall, to avoid wasting money on potentially unsuitable products, you must use the free space on your rig as references. That would help you reduce the number of battery chargers you have to check out.


It’s impossible to be too careful if electricity is involved and that is why you should give the safety features of the chargers some thoughts. Deep cycle battery chargers for recreational vehicles often pack protection against overheat, overcharge, reverse-polarity, … Before committing to a purchase, you need to make sure that the safety features of the chosen charger could keep you and your batteries secured. If your charger is loaded with proper features, you can casually enjoy your experience without having to worry about the integrity of the battery bank.


Unless you have certain requirements, there is no need to spend big bucks to get high-end premium-grade chargers. The market contains plenty of decent models that also come at reasonable prices so it’s unnecessary to empty your wallet on expensive battery chargers. However, as price is linked to quality, it’s widely advised that you stay away from dirt-cheap battery chargers. Though buying such models lets you save some buck, they usually break down after a short period of time and force you to buy replacements.

Top Deep Cycle Battery Charger Brands

Deep cycle battery chargers for RV come from many manufacturers but when it comes to reputability, several names stand out.


As a long-established brand of power tools and associated accessories, Black+Decker is the top choice for those that seek stable and consistent chargers. In addition to that, Black+Decker produces highly versatile models that could be put to use in various power setups.


Owing to a combination of innovative mindset and applications of the latest technologies, NOCO ensures that its battery chargers would be both adaptable and resilient. So if all you need is a robust deep cycle battery charger for RV, you should keep an eye out for units made by NOCO.

Battery Tender

Known to be one of the leading manufacturers of battery chargers, Battery Tender constantly reviews and optimizes the design of its products for modern standards. Needless to say, Battery Tender is held in high esteem by people that want to grab an up-to-date charger for deep cycle batteries.

best deep cycle battery charger

Deep Cycle Battery Charger Vs. Regular Battery Charger

While comparing deep cycle battery chargers with regular battery chargers, it’s important to check a couple of areas:


In general, deep cycle battery chargers charge batteries in stages and the charging current tends to change between the stages. On the other hand, regular battery charge batteries from start to finish in one go and the charging current remains essentially constant throughout the process. Thus, deep cycle battery chargers take longer to fully charge batteries than regular battery chargers.


Once max capacity is reached, regular battery chargers would automatically shut down while deep cycle battery chargers go into float mode to tackle self-discharge. That is why deep cycle battery chargers could keep batteries at full charge over time.


On average, deep cycle battery chargers often cost more than regular battery chargers due to the use of dedicated circuitries.  

How to Charge A Deep Cycle Battery Properly

You don’t have to be a battery expert to charge a deep cycle battery. Follow the steps down below and you would be able to bring your battery to full charge. 

  • Step 1: Put on goggles and protective gloves. All kinds of things could happen as you recharge your batteries so it’s best to be prepared. 
  • Step 2: Disconnect the battery and bring it to a well-ventilated space. Use a screwdriver to remove the covers of the cells and check the electrolyte level. If the electrolyte level appears to be low, proceed to add distilled water. 
  • Step 3: Set the charger to match the characteristics of your battery. Next, connect the cables of the chargers to the terminals of the battery. After you secure the cables, turn on the charger and start the charging. 
  • Step 4: Once the battery is fully charged, the charger would likely display a notification. Remove the cables and check the voltage of the battery. If everything seems normal, you may use the battery as you see fit.

FAQs About Deep Cycle Battery Chargers For RV

Is it wise to buy deep cycle battery chargers online?

By visiting online retailers, you can take a look at a multitude of chargers and what they have to offer. Still, it’s suggested that you play it safe and stick to well-known names such as Amazon, eBay, Walmart, …

Can I use deep cycle battery chargers to charge normal batteries?

Deep cycle and normal batteries don’t exactly have significant differences so if needed, deep cycle battery chargers could be used to charge normal batteries.

How long would it take chargers to bring batteries to full charge?

In general, the charging time often varies from case to case as it’s influenced by an assortment of factors. Nevertheless, by taking into account the power output of your charger and the remaining charge in your battery bank, you may get a close estimate.

What should I do to keep my charger in good shape?

Typical deep cycle battery chargers don’t require special care but it’s best that you follow the maintenance instructions in the owner’s manual. If you notice odd signs, contact the manufacturer at the earliest opportunity instead of improvising.  

Do deep cycle batteries need a special charger?

Technically, it’s possible to use regular chargers to charge deep cycle batteries. Nevertheless, to preserve the integrity of the cells, it’s strongly recommended that you use dedicated deep cycle chargers to charge deep cycle batteries.

Why should we use a deep cycle charger?

Engineered for deep cycle batteries, deep cycle chargers ensure that the cells receive proper charges in stages which improve quality and longevity. 

What amp should you charge a deep cycle battery?

To determine the ideal ampere rating, you should take into account the capacity of your battery. If you use a standard battery, stick to low amps while charging. If your battery is a high capacity model, you may use high amps to charge it. 

Is it OK to fast charge a deep cycle battery?

Setting your charger at high amps would let you charge your battery quickly but it may also lead to issues. That is why unless you happen to be in a hurry, don’t fast charge your deep cycle battery.

What’s the best way to charge a deep cycle battery?

The best way to charge a deep cycle battery is to use a deep cycle charger.  

How do you charge a deep cycle battery with a battery charger?

Batteries and battery chargers have unique requirements once it comes to charging but you likely need to set up a connection with cables to start charging. 

How often should you charge a deep cycle battery?

To keep batteries in good shape, you should charge them before the voltage drops too low. If your battery bank is completely depleted, it may sustain permanent damages. 

How do you tell if a deep cycle battery is fully charged?

When your battery reaches full charge, your charger is going to notify you. You could use a voltmeter to check the battery as a precaution.

You can also find our guides on how to choose the best RV battery, best lithium battery for RV, best RV surge protector, best RV generator, best solar panels for RV, best RV converter, best RV inverter, best RV battery monitor, 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.

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