The Best Adjustable Battery Charger of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Adjustable Battery Charger of 2022. Check our ranking below.

2,910 Reviews Scanned

Rank No. #1

3V~36V 4A 144W Universal Power Supply 3V 5V 6V 9V 12V 15V 18V 20V 24V 30V 36V Adjustable Variable Switching AC/DC Adapter, 100V-240V AC to DC Converter with 14 Tips & Polarity Converter & Test Lead

Input: AC 100~240V, 50/60Hz; Output: DC 3~36V Adjustable, Max 4A 144W; It can apply to most appliances which the input voltage is between 3V to 36V and the rating power is equal to or less than 144 Watt
14pcs DC Tips: 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and DC terminal connector. Easily meet the power requirement of your different devices
Wide Range of Applications: The 144W all-in-one multipurpose AC/DC adapter fit for many 3~36V small household electronics such as LED strips, 3D printer, smart speaks, wireless routers, DC motor, DVR NVR surveillance system etc. For indoor use only
Built-in Multiple Safety Protection Systems: Automatic over voltage cut-off, over current cut-off, over temperature cut-off, short circuit cut-off. No noise, no explosion, no fire hazard, safe to use. 6ft long power cable makes it convenient to use
Package Includes: 1 x 3~36V 4A universal ac/dc adapter, 14 x DC tips, 1x reverse polarity converter, 1x alligator clip test lead, 1x male DC power pigtail cable. If you have any questions, please feel free to contact us via Amazon, and we are here for you

Rank No. #2

Beleeb C20 Adjustable Battery Charger 12V 24V 36V 48V, 12A Pulses of High-voltage Battery Desulfator Maintainer with Smart Chip for Lead-acid LiFePO4 Lithium Batteries BLB-C20

One is enough>> Not just for charging 12V 24V batteries, but also as a 36V 48V battery charger. Now you only need one charger to charge different batteries like SLA, AGM, GEL, lithium, LiFePO4, deep cycle battery. It can be used to charge car, motorcycle, vehicle, RV, ATV, SUV, Golf Cart, forklift, Marine, Boat.
Two charging modes>> Normal mode and “H” mode(pulse of high-voltage). Normal mode for daily charging, turn the AMPERE knob to set the charging rate, “HIGH” for an emergency quick charge. “H” mode for battery maintenance, “LOW” rate charging is recommended.
Intelligent charging program>> Be sure to choose the corresponding voltage to charge your batteries. The charger will automatically adjust the charging voltage and current according to the battery status. Constant current, constant voltage power supply for zero voltage charging for troubleshooting low voltage batteries or equalizing unbalanced battery system for longer battery life.
What is "H" mode>> "H" means pulse of high-voltage, A golf cart usually comes with 4 to 8 batteries. One of them can go bad at any time. It makes sense to want to keep or change just the bad one especially if you only need to use the cart on the weekends or save money. That's what "H" does,also known as EQUALIZING CHARGE
Connect it& Forget it>> Overload circuit breaker and automatic control chip give you full protection. Just plug it, charging your batteries 24/7 without worry. Please do not connect lithium LiFePO4 batteries without a BMS to the charger for a long time.

Rank No. #3

DC Power Supply Variable, 30V 10A Adjustable Switching Regulated DC Bench Power Supply with Intelligent Charging Mode, 18W USB Interface, Precision Encoder Knob (White)

Intelligent Charging and Safety Detection: Our DC power supply features intelligent charging mode. The real-time display of charging power (Ah) keeps you informed of the battery status. Worried about overcharging? Rest easy knowing our power supply stops charging when your battery is full. With built-in detection of incorrect connections, ensuring safe and reliable charging.
Overcurrent Detection Alarm: Easily activated with the 'OCP' button. Detects short circuits and overcurrents, triggering an alarm and stopping output to protect connected devices.
Compact and Various Application: This DC power supply is less than 2.3 lb and measures only 7.59 x 3.35 x 6.1 inches, applies for laboratory, school, repair, electrolyzation, electroplate, brush plating, lamp test, aging testing, battery charge, home DIY and other requirements. 18W USB port Quickly charge your devices with high-speed 18W output for efficient charging, no worry about running out of power.
Reliable and Safety: many safety measures are adopt in Kungber lab DC power supply - Grounding wire, Leakage protection,Thermal protection, Voltage overload protection, Power overload protection and Short-circuit protection. Kungber power supply use premium electronic components, provide reliable working status and prolong the life of product effectively. When the working temperature is more than 122℉/50℃,the intelligent thermal protection will active the cooling fan to lower the temperature
What You Get - 1 x Kungber SPS3010 Variable DC Power Supply, 1 set of Output Power Cords , 1x Input Power Cord, 1 x User Manual, and Technical Support from Kungber.

Rank No. #4

Beleeb Adjustable Battery Charger 12V 24V 36V 48V 60V 72V Smart LCD Display Pulse Repair Desulfator Cable Clamps Automotive Maintainer for Golf Cart Mower Boats, PWCs Truck RV ATV SUV

Everything Charger>> Design with 12V,24V,36V,48V,60V,72V voltage charging positions, you can only choose one Beleeb automotive charger for your different batteries pack like SLA, AGM, GEL, LiFePO4,lithium,deep cycle battery. It’s widely used for car, motorcycle, vehicle, RV, ATV, SUV, Golf Cart, Marine, Boat.
Two charging mode>> Normal voltage (12-volt to 72-volt) charge and "H" knob charge (pulse of high-voltage onboard charge)
Restore Your Battery>> Choose voltage knob "H" and set your battery charger to the lowest rate of charge ,the slower and longer you charge your lead-adid battery the more likely it is that the sulfation will be removed. restore lost battery performance for stronger engine starts and extended battery life. the "H"knob It's not just restore lost battery performance but also Equalizing charge mode, can compensate for the balance between batteries to extend the battery lifespan.
Enjoy precision charging >> Select “LOW” “MEDIUM” for normal charge, “HIGH” for fast charge. The nominal theoretical Max current is: 12V-14A, 24V-12A, 36V-10A, 48V-8A, 60V-6A, 72V-4A.It’s widely used for 6-volt, 8-volt, 12 volt lead-acid in series and lithium-ion batteries with battery management systems(BMS)
Connect it & Forget it >> Multi-protection&overload reset button,worry-free battery charger for everyday use - 24/7 just plug and charge, forget it . Smart trickle pulse charger build in cooling fan, over voltage protection, overcurrent protection, short circuit protection and reverse connection protection.

Rank No. #5

PZ.P 12V 24V Manual Battery Charger Maintainer, 0 to 15A Arbitrarily Adjustable Car Battery Trickle Charger, Battery Desulfator with Repair, Winter Mode, Suitable for AGM Gel Deep Cycle Truck RV ATV

【Only One Manual Car Battery Charger Required】The voltage is arbitrarily adjustable from 12 to 30v, you only need to have one battery charger to charge and repair your 12v to 30v batteries, saves your money and storage space. Suitable for all 12v or 24v lead-acid batteries, deep cycle batteries, such as AGM, STD, GEL, Wet, MF, EFB, charges trucks, lawn mowers, RVs, SUVs, UTVs, ATVs. NOTE: It can not activate a totally dead battery or repair a damaged battery.
【Adjustable Current for Faster Charging】Our 12/24 volt battery charger current is arbitrarily adjustable from 0 to 15Amp, suitable for 3-500Ah vehicle batteries, it can be a low-current (such as 750mA/1A/1.75A/2A) battery trickle charger or fast battery chargers (Max 12V-15A/24V-7.5A), which can increase the charging speed and shorten your charging time.
【Easy to Use and Multi-functional】Simply plug the 12/24v battery charger into a power source, connect the batteries, adjust the voltage knob, and adjust the current knob to use it. It can also be adjusted to standard mode (14.4V-2A or 29V-2A) and plug and play next time. It is an all-in-one solution for battery charger, maintainer, trickle charger and desulfurizer with 7-step charging procedure (desulfurization, initialization, bulk charge, absorption, recondition, float, pulse maintenance).
【LED Display Precision Charging】Trickle charger for car battery 12v adopting LED display, clearly show the voltage/current, enjoy accurate charging. The charger does not need to be plugged into the power supply, connecting the positive and negative battery terminals can detect and display the residual voltage of the battery. Adopts heat-resistant and oxidation-resistant copper charging cable, which is not easy to break.
【Battery Repair and Maintainer】12 volt battery charger automotive features auto desulfurization, detects battery sulfation and acid stratification, take newest pulse repair function to restore lost battery performance, help to restore older/idle batteries and extend battery life. When the battery is fully charged, the car battery trickle charger current will automatically drop and go into pulse maintenance mode to ensure that the battery is fully charged and will not be damaged by overcharging.

SaleRank No. #6

NVWA 25 Amp LifePo4 Battery Charger 12V 25A 24V 15A, 2/8/15/20/25A Five-Level Current Adjustment, for LiFePO4 Calcium Gel AGM Lead Acid Batteries, Multiple protections, Fast Smart Battery Charger

This charger with adjustable current (2/8/15/20/25Amp) can meet the needs of batteries with different capacities. Support Battery range “5-400Ah 12V/24V”. Support battery types “LiFePO4, Calcium, Gel, AGM, and Lead-acid”.
7-stage automatic charging protects your battery from being overcharged. It also helps in recovering batteries that have been over-discharged and sulfated.
Multiple protections: Reverse polarity protection, Short circuit protection, No-load protection, Overvoltage protection, Low voltage protection, Over temperature protection, Electric Shock protection
Input voltage: 100-240V AC, 50/60Hz. Rated output: 12V 25Amp Max, 24V 15Amp Max
Aluminum shell

Rank No. #7

3V~24V 3A 72W Universal Power Supply 3V 5V 6V 9V 12V 15V 18V 20V 24V Adjustable Variable Switching AC/DC Adapter, 100V-240V AC to DC Converter with 14 Tips & Polarity Converter & Test Lead, 3 Prong

Input: AC 100~240V, 50/60Hz; Output: DC 3~24V Adjustable, Max 3A 72W; It can apply to most appliances which the input voltage is between 3V to 24V and the rating power is equal to or less than 72 Watt
14pcs DC Tips: 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and DC terminal connector. Easily meet the power requirement of your different devices
Built-in Multiple Safety Protection Systems: Automatic over voltage cut-off, over current cut-off, over temperature cut-off, short circuit cut-off. No noise, no explosion, no fire hazard, safe to use. 6ft long power cable makes it convenient to use
Wide Range of Applications: The 72W all-in-one multipurpose AC/DC adapter fit for many 3~24V small household electronics such as LED strips, 3D printer, smart speaks, wireless routers, DC motor, DVR NVR surveillance system etc. For indoor use only
Package Includes: 1 x 3~24V 3A universal ac/dc adapter, 14 x DC tips, 1x reverse polarity converter, 1x alligator clip test lead, 1x male DC power pigtail cable. If you have any questions, please feel free to contact us via Amazon, and we are here for you

Rank No. #8

WILDGAME INNOVATIONS 6V/12V eDRENALINE Battery Charger Long-Lasting Powerful Feeder Battery Charger with Adjustable Voltage Switch & Charge Status Light Indicator

CHARGING ACCESSORY - The Wildgame Innovations 6V/12V eDRENALINE Battery Charger is a compact but powerful rechargeable battery maintainer; It is designed to simplify the operation and improve the performance of your feeder and other hunting equipment
COMPATIBILITY - Compatible with 6V and 12V rechargeable batteries, this charging device with a 4.5-foot long power cord is intended to work only with sealed lead-acid type rechargeable batteries; Other types of batteries may burst and cause damage
INTUITIVE CONTROL - The 6V/12V rechargeable battery charger features a user-friendly interface with an adjustable voltage switch and a charge status light indicator; This simplifies the operation and monitoring of the charging process
ROBUST CONSTRUCTION - Made from durable molded plastic, this Wildgame Innovations battery charger for feeder batteries is designed for long-term use; It withstands continuous operation and eliminates the need for a large number of disposable batteries
EASY MAINTAINANCE - The eDRENALINE Battery Charger will provide a good and consistent charge over time if it is maintained in good condition; Keep the alligator clips clean and free of any sort of build-up that may interfere with charging

SaleRank No. #9

Beleeb C40 Adjustable Battery Charger 12V 24V 36V 48V 60V 72V, 16A Pulses of High-voltage Battery Desulfator Maintainer with Smart Chip for Lead-acid LiFePO4 Lithium Batteries BLB-C40

One is enough>> Not only does it charge 12V 24V batteries, but it can also be used as a 36V 48V battery charger and even a 60V 72V battery charger. Now you only need one charger to charge different batteries like SLA, AGM, GEL, lithium, LiFePO4, deep cycle battery. It can be used to charge car, motorcycle, vehicle, RV, ATV, SUV, Golf Cart, forklift, Marine, Boat.
Two charging modes>> Normal mode and “H” mode(pulse of high-voltage). Normal mode for daily charging, turn the AMPERE knob to set the charging rate, “HIGH” for an emergency quick charge. “H” mode for battery maintenance, “LOW” rate charging is recommended.
Intelligent charging program>> Be sure to choose the corresponding voltage to charge your batteries. The charger will automatically adjust the charging voltage and current according to the battery status. Constant current, constant voltage power supply for zero voltage charging for troubleshooting low voltage batteries or equalizing unbalanced battery system for longer battery life.
What is "H" mode>>"H" means pulse of high-voltage, A golf cart usually comes with 4 to 8 batteries. One of them can go bad at any time. It makes sense to want to keep or change just the bad one especially if you only need to use the cart on the weekends or save money. That's what "H" does,also known as EQUALIZING CHARGE
Connect it& Forget it>> Overload circuit breaker and automatic control chip give you full protection. Just plug it, charging your batteries 24/7 without worry. Please do not connect lithium LiFePO4 batteries without a BMS to the charger for a long time.

Rank No. #10

C60A 12V High Power Lifepo4 Charger Smart Battery Charger Maintainer with 0-15V Adjustable Current and Voltage, 12.6V Portable Power Adapter for 14.6V LiFePO4 Lithium Iron Rechargeable Battery(60A)

✔【Designed for Lithium-Ion Batteries】Capacity. Li 12.6V 14.6V 60A LiFePO4 Lithium Battery Smart Charger is specially designed for 12.8V LiFePO4 battery or 12.6V Li-ion battery, the voltage is adjustable, the range is 0-15V adjustable. Do not use the charger on a metal surface platform. Buyers have any questions please email me. We will help you solve it as soon as possible.
✔【High Efficiency Charging】Constant current 60A, constant voltage about 14.6V/12.6V, very suitable for large capacity LIFEPO4 battery or lithium battery charging. A 12V100AH battery is fully charged in just 2 hours, while a 10-amp multi-function charger takes 10 hours to fully charge a 100Ah battery. enough current. The current is adjustable from 0-60A. It is recommended to charge the charger with a current of about 55A to prolong the life of the charger.
✔【Multiple Protection】Capacity. Li 12V 60A fast car lithium battery charger has multiple protections, and the 60A charger has over temperature/overvoltage/short circuit/overcurrent/low voltage protection to prevent damage from misoperation. (!!!Note: The fan will automatically stop running for a few minutes after a power outage.)
✔【Easy operation, indicator light is visible】Connect the + and - alligator clips of the charger (other interfaces can be customized) to the battery, as + to +, - to -. Then plug the input cable into the charger and connect the input power. Intuitive LED indicators provide intuitive charge status feedback and diagnostic information. See notes below.
✔【High Quality Material】Our lithium battery charger is made of aluminum alloy, with surface oxidation treatment, high hardness, anti-drop and moisture-proof, anti-oxidation, built-in cooling fan, keep the charger itself cool. Cooling protects your charger and battery. Charging is safe. Intelligent circuit chip, improve charging conversion rate, stabilize discharge voltage, charge better than ordinary chargers, more durable, weighs about 1.8KG,

Last update on 2024-09-15 / Affiliate links / Images from Amazon Product Advertising API

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Specifications: How powerful they are can be measured.
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FAQ:

Q: Can I charge any battery in my battery charger?

A: No . You cannot use just any charger to charge any rechargeable battery. First off, battery chargers use charging protocols to charge specific battery chemistries. Batteries may be too large or small in terms of capacity (measured in mAH or AH) for a given charger to charge or charge safely.

Q: How do you charge a battery charger?

A: Start the engine of the car with the charged battery. Upon starting the engine, its charging system will begin to charge the dead car battery through the jumper cables. Allow at least five minutes to pass after starting the engine of the car with the charged battery.

Q: Can a battery charger overcharge a battery?

A: Another way to overcharge the car battery is human error. Using a battery charger without properly knowing how can also overcharge a battery. Incorrect volts or high amp settings on a charger can overheat the battery or charge it too quickly, becoming ineffectual for the intended purpose.

Q: Do battery chargers charge in AC or DC?

A: AC chargers charge the battery in a shorter time period whereas on the other hand a DC charger takes a longer time period to fully charge the battery. AC outlets and power sockets are very convenient and easy to use, While DC charging units have special outlet for more power production.