Best Battery Desulfators: Make Your Battery Last Longer

Specs

• Manufacturer:Schumacher
• Part Number:SC1359
• Voltage: 6-Volt/12-Volt

Pros:

• Charges, maintains, and removes sulfates automatically
• Easy to see and control battery status on the digital display
• Automatically adjusts based on battery needs for safety and precision

Cons:

• After years of use, problems may occur
• Some automatic functions may not be super precise
• Can be a delay when showing battery capacity

If you’re looking for a seriously smart battery desulfator, you’ve got to take a look at the Schumacher Fully Automatic Battery Charger, Maintainer, and Auto Desulfator. Capable of delivering a 15-amp charge and 3-amp maintenance power, it’s compatible with standard AGM and deep-cycle batteries and it’s fully automatic, offering smart charging that’s controlled by a microprocessor that automatically adjusts the amperage and multi-stage charging for the highest level of precision. This battery desulfator will even automatically detect 6-volt and 12-volt batteries.

Equipped with a digital display and LED light indicators, you can easily see what’s going on with your battery when this device gets to work. This high-tech desulfator offers years of reliable performance. However, as it ages, it can begin to experience issues and at times, it may go into float mode prematurely even if a battery isn’t at full charge. And there is a bit of a delay when you push the button to show battery capacity on the digital display.

Specs

• Manufacturer:Noco
• Part Number:GENIUS5
• Voltage: 6-Volt/12-Volt

Pros:

• Suitable for a wide range of different batteries and vehicles
• Automatically adapts based on ambient temperature
• Can bring batteries back from 0 to 1 volts

Cons:

• In some instances, batteries don’t get a full charge
• Repair mode can be finicky

If you’re searching for quality, capability, and an affordable price, the NOCO Genius5 Fully Automatic Battery Charger, Maintainer, and Desulfator is a great product. It resurrects batteries you thought were useless, including 6- and 12-volt lead-acid batteries, marine, automotive, and deep cycle batteries. This desulfator automatically determines a battery’s sulfation to maintain batteries properly and in addition to being a desulfator, it’s also a battery charger that recharges batteries as low as 1 volt (or even 0 volts using the Force Mode feature). 

Plus, it offers extra perks and features too including a thermal sensor that senses ambient temperature and adjusts the charge so you don’t overcharge in hot climates and undercharge in cold ones. You may experience potential issues, though. Some batteries don’t always reach a full charge, and repair mode can be a bit finicky at times. 

Specs

• Manufacturer:BatteryMINDer
• Part Number:2012
• Voltage:12-Volt

Pros:

• Works with cars and other vehicles
• Reliable for years of use
• Can maintain and desulfate multiple batteries at once

Cons:

• Doesn’t work quickly and takes some time to complete its processes
• Connecting multiple batteries does require Y-cords, which aren’t included

The BatterMINDer Model 2012 uses a patented process that safely removes sulfation and reconditions the battery through high-frequency pulses to desulfate batteries, not high voltage. This unit can desulfate up to six batteries together when configured in parallel. It’s great for winterizing vehicles of all varieties and has an ambient temperature sensor that adjusts voltage based on the temperature in and around the battery. 

Plus, the desulfator has short-circuit, over-temperature, and reverse-polarity protection. Keep in mind that in order to desulfate two or more batteries in parallel, you have to use Y-cords, which is a separate purchase. Also, this battery desulfator only works on 12-volt batteries. 

Specs

• Manufacturer:Solar
• Part Number:PL2320
• Voltage:6-Volt/12-Volt

Pros:

• Fully automatic operation with adjustments for temperature, safety, and efficiency
• Works with flooded, AGM, gel cell, spiral wound, marine, and deep-cycle batteries
• Can improve even distressed or severely depleted batteries

Cons:

• Included cables are quite short
• Manual can be a bit confusing and fails to provide enough information

The Clore Automotive Battery Charger, Maintainer, and Desulfator will take the hard work of worrying about your car’s battery off your hands with a fully automated process. This single device is a desulfator, a charger, and a maintainer all in one, and it handles each of these jobs with little to no input from you. Able to work with both 6- and 12-volt batteries, you’ll enjoy fully automatic operation whether you’re charging, maintaining, or reconditioning your battery. It offers versatile 2/10/20 amp charge rates as well as multiple modes, including Soft Start Mode for severely depleted batteries and Recondition Mode for distressed batteries in need of rejuvenation. 

And with temperature compensation, you’ll get more effective performance from this battery desulfator all around. The biggest potential downsides of this device? The manual is light on information and isn’t well-written, which can leave you a bit confused. It’s lacking details on all of the battery desulfator’s capabilities. And the included cables are handy but they’re pretty short, so distance can be an issue.

Specs

• Manufacturer:MotoPower
• Part Number:MP00205C
• Voltage:12-Volt

Pros:

• Works automatically to move through five stages of charging and desulfation
• Compact and convenient to carry anywhere
• Makes adjustments and safety alterations automatically

Cons:

• Gets very hot to the touch
• Heat can potentially cause problems with functionality

Although the MotoPower Battery Charger, Maintainer, and Desulfator is small in size, it doesn’t skimp on capabilities or benefits. This compact device is a battery desulfator as well as a charger and maintainer, and it works on all kinds of 12-volt lead-acid batteries. All you have to do to improve your battery is plug in the device, connect it to your battery, and it’ll work automatically. This battery desulfator is built for all sorts of weather, and it won’t drain your battery while it’s connected. It begins desulfation while it charges, with no need for special settings or your interference. 

Plus, there are multiple stages to the process so your battery gets all that it needs. This device even offers thermal compensation for stability in all temperatures and timer protection so it shuts off when it’s finished (or within 24 hours of being connected). However, because of the small size of this battery desulfator, heat can be a potential problem. The device itself gets very hot, and it doesn’t feature vents to allow the heat created to disperse. Over time, that heat may ultimately cause the desulfator to malfunction or experience issues.

Specs

• Manufacturer:Schumacher
• Part Number:SC1281
• Voltage:6-Volt/12-Volt

Pros:

• Highly versatile, can jump start, charge, and run diagnostics on battery
• Affordable price
• Quality is superior to many other options

Cons:

• Larger than most
• Flimsy clamps

The Schumacher SC1281 is a fantastic option for those who want the most from a single tool. This single unit functions as a battery charger, battery maintainer, a desulfator, and a jump starter. It can also run diagnostics on your battery, easily making it one of the most comprehensive tools for the money. No, it's not all that expensive and can even qualify as a runner-up for the place of best value. And because it's a Schumacher, you can count on the quality being well above much of the competition. The biggest issue you'll run into with this unit is the size. The high versatility does require a larger footprint than many options on the market. Also, the clamps can see some design improvements as many reviewers report they feel flimsy, but they're still capable of performing as needed.