Our Best Picks:
The 10 Best Gel Battery Charger Reviews:
SaleBestseller No. 1 
SUHU Car Battery Charger 8-Amp, 12V and 24V Fully-Automatic Smart Battery Maintainer Trickle Charger, Battery Desulfator with Temperature Compensation for Car Truck Motorcycle Lawn Mower Boat Marine
- 【8-AMP QUICK BATTERY CHARGER】12V 8-Amp and 24V 4-Amp quick battery chargers, charging speed is faster than other 2-Amp or 6-Amp battery chargers automotive. Designed for all types 12V and 24V lead-Acid batteries that within 6-150Ah(12V), 6-100Ah(24V), including AGM, GEL, SLA, Flooded (WET), or any common automotive, deep-cycle, marine, or maintenance-free battery. Including cars, trucks, SUVs, motorcycles, lawn mowers, boats marine, etc. A NEW REPLACEMENT AVAILABLE FOR ANY QUALITY MATTER.
- 【POWERFUL PULSE REPAIR FUNCTION】SUHU car battery charger feature with Intelligent control system, strong pulse repair technology, One Key to Repair, Activate Battery, Pulse repair function can help to repair your loss battery and extend battery life. which will help to improve the battery life and performance. ➤NOTE: It can not activate a dead battery or repair a battery which is damaged seriously; it also can not repair a battery back to 100% new. NOTE: LITHIUM BATTERY DISABLED.
- 【PLUG AND PLAY】 No complicated steps, just plug and charge, all-in-one battery solution as battery charger, trickle charger, battery maintainer and battery desulfator. Portable trickle charger for car battery with LCD screen that displays battery status, charge voltage, charge current, inside temperature, summer mode, winter mode, etc. simple operation and easy to read display. Automatic charging and maintenance of your batteries for long time when plugged in.
- 【MULTIPLE CAHRGING PROTECTIONS 】Adopt ABS flame-retardant shell, fireproof, electric shock, corrosion resistant, solid and durable, Built in circuit protection guards against reverse polarity, sparks, overcharging, over-current, open-circuits, short-circuits and overheating, stable performance for longer life. This 24V 12V car battery charger ensure the adaptive charging process, with maximum safety, and automatically stop when the battery is fully charged.
- 【THE LATEST INTELIGENT CPU CONTROL】SUHU Portable battery charger 12 volt and 24 volt, automatically adjusts the charge current and maintainability according to the ambient temperature. No matter how harsh the weather is, it still easily deal with all kinds of harsh voltage conditions, ensure adequate charging in Winter and prevent overcharge in Summer. Compatible with all types of vehicles - charges and maintains.
SaleBestseller No. 2 
20-Amp Smart Battery Charger,Lithium,LiFePO4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/deep Cycle Charger,12V/20A and 24V/10A,for Boat,Motorcycle,Lawn Mower,Golf cart..
- 🚙 [Widely used] Intelligent automatic recognition of 12/24V battery, quick charging, 12V 20Amp, 24V 10Amp ultra-high power, deep cycle battery charging, does not damage the battery. Lithium, LifePO4, Lead acid (AGM/GEL/EFB, MF, Flooded battery, VRLA, SLA, wet battery..) Suitable for cars, trucks, motorcycles, SUVs, golf carts, agricultural vehicles, motorboats and so on. Maximum voltage: Lithium :12.4V / 24.8V. Lead acid :14.7V / 29.4V. LifePO4:14.6V / 29.2V. Please select the correct type.
- 🚗 [Protection and Maintenance] 7 level fast intelligent charger, temperature compensation, cooling system, over current, over voltage, short circuit and reverse connection protection, no spark, refractory material, 13 ft cable, multiple protection, safe and reliable. Input voltage :100-240V 50/60Hz, output voltage/current :12 V20A, 24 V10A. Minimum starting voltage :1V. Automatically and intelligently adjust charging current to prolong battery life. It can'tactivate a depleted battery
- 🚚 [Automatic charging] Automatic detection and identification of 12V and 24V batteries without manual selection. The CPU monitors the charging process intelligently. When fully charged, it automatically enters trickle charging, detects sulfate layer and acid layer, and adopts the latest pulse repair function to restore lost battery performance and extend battery life. You can select charging current and battery type. When the battery is low, the maximum charging current can reach 20 amps
- 🚌 [Safe Charging] Intelligent charger, large LCD display of charging and battery status; Charge voltage and current, internal temperature, charge percentage, summer, winter mode, etc. The operation procedure is simple, just plug in the power, select the battery type and charging current, and charge the battery intelligently. Battery charger, battery maintenance, trickle charger, battery desulfurization in one battery solution. Essential tools for your home. Let you charge more secure.
- 👏 [strong quality and service] we are a professional charger brand. We have quality products and after-sales service. We offer permanent after - sale service for this product. Thank you for your support, if you have any questions, please feel free to contact us! 📦📦【What You Get】 Smart charger, 3M power cord, cable clip, manual, 2 junction boxes
SaleBestseller No. 3 
20-Amp Smart Battery Charger,12V/20A and 24V/10A.Lithium,Lifepo4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/Pulse Repair Charger,for Car ,Boat,Motorcycle, Lawn Mower
- 🚙 [Widely used] 12V 20Amp, 24V 10Amp ultra-high power, intelligent identification can be charged quickly, without damaging the battery. Automatic lock button after 10 seconds to prevent misoperation. Lithium, LifePO4, Lead acid (AGM/GEL/EFB, MF, Flooded battery, VRLA, SLA, wet battery..) For cars, trucks, motorcycles, SUVs, golf carts, farm vehicles, motorboats.. Lithium: 12.4V / 24.8V. Lead acid:14.7V / 29.4V. LifePO4:14.6V / 29.2V. Please select the correct type.
- 🚗[Battery protection repair] AC input voltage :100-240V 50/60Hz Output voltage :12V/24V Output current :12V20A&24V10A Minimum starting voltage :GT;7.0V size :158x90x50mm Net weight :470g Automatically identify the battery status, select the appropriate charging current to charge and protect the battery. One-button repair function extends battery life. It cannot activate a completely failed battery and restore it to a completely new state.
- 🚚[Automatic charging] Automatically detects 12V or 24V batteries and monitors the entire charging process through the latest intelligent CPU control program. 3 gears adjust charging current and battery type, charging current automatically and intelligently adjust, can run at full speed in winter, no load in summer. It can handle all kinds of harsh voltage environments with ease.
- 🚌【Safety Charging】Adopt ABS flame-retardant shell, fireproof, anti-shock, corrosion resistance, sturdy and durable, built in circuit protection, spark free system, reverse polarity protection, over-charge, over-voltage and over-temperature protection. The intelligent LCD display shows the charging status and battery status, so that you can charge more at ease. Please read the instructions carefully before proceeding.
- 👏✔[Strong quality and service] We are a professional charger brand. We have quality products and after-sales service. This product, we provide permanent after - sale service. If you have any questions, please feel free to contact us! 📦📦【What You Get】 Smart charger, 3M power cord, cable clip, manual, 2 junction boxes!
Bestseller No. 4 
12-Amp Smart Battery Charger,Lithium,Lead-Acid(AGM/Gel/SLA) Pulse Repair Car Battery Charger,Trickle Charger,Maintainer/Deep Cycle Charger,12V/10A | 24V/7.5A for Automotive,Boat,Motorcycle,Lawn Mower
- 🔋【3-in-1 Quick Battery Charger, Desulfator, Maintainer】The intelligent battery charger is designed to charge and maintain 12V/24V batteries, it can works as 12A quick battery charger. Compatible with all 12Volt & 24Volt lead-acid automotive,marine, deep-cycle batteries: flooded,gel,AGM,maintenance-free,WET,CAL,EFB,and 12.6V lithium-ion batteries on Car,motorcycle,lawn mower,ATV,van,small truck,tractor,SUV,boat,scooter,etc.🎁Nice holiday gifts for Christmas day,Thanksgiving,New year,etc.
- 🔋【12Amp 12V and 7.5Amp 24V Multi Modes Battery Charger】With 12V and 24V charge and repair modes,it keeps a perfect performance as a bench battery charger, trickle charger, plus battery desulfator, deep-cycle,battery maintainer.Automatically adjusts charge current and maintainability according to the ambient temperature,so that winter is full speed, summer is not overload,charges the battery quickly and accurately. Charges fully then go into float charger mode, extend battery service life.
- 🔋【Multiple Protection for Your Batteries】This smart battery charger owns upgrade digital charging program by MCU controller: battery desulfation, built-in circuit protection against reverse polarity, sparks, overcharging, low voltage protection,over-current, interruption,short circuit and overheating,As the cargador de bateria de automovil ,this portable charger booster is a must car emergency tools for vehicle drivers,ideal for carefree, long-term charging and batteries maintenance.
- 🔋【LCD Screen Display Provides Visualized Charging】Just plug and play, leave the automotive battery charger there for charging and maintaining your batteries automatically, no worry it will influence the battery or charger. The smart digital LCD screen displays the charging status and battery status, charging voltage, current,cumulative charge,etc. The auto battery charger uses a 7-step charging sequence to detect,charge,desulfate,and maintain your battery automatically.
- 🔋【Four Charge & Repair Modes for Most of Batteries】ORDINARY Mode(To charge 12V/24V SLA batteries including Wet,MF,Gel,Flooded,deep cycle,VRLA maintenance free lead-acid batteries); LITHIUM Mode( To charge 12.6V/ 25.2V lithium battery); AGM Mode(To charge 14.8V/29.6V AGM/EFB batteries); MAINTENANCE Mode (Pulse repair to recover the battery--it takes about 1 hour, then changes to automatic charging stage).
SaleBestseller No. 5 
CHARGE IT! 4520 12 Volt 20 Amp Fully-Automatic Smart Battery Charger, Battery Maintainer, and Desulfator
- Charge and Maintain 12-Volt Batteries
- Simple Operation: Select your battery type, choose a charge rate and press "GO"
- 20 Amp Fast Charge, 10 Amp Medium Charge, 2 Amp Slow Charge
- Properly Charges Multiple Battery Types: Standard Flooded, including Deep Cycle, AGM, and Gel Cell
- Soft Start Mode for Deeply Discharged Batteries
SaleBestseller No. 6 
lifepo4 charger 15-Amp Fully-Automatic Smart Charger,12V and 24V Battery Charger,12V/15A 24V/10A Lead-Acid(AGM/Gel/SLA)/Lithium lron LiFePO4 Trickle Charger,Pulse Repair Car Battery Charger,Deep cycle
- 🚙[Wide application] 12V 15Amp, 24V 10Amp ultra-high power, intelligent identification can quickly charge without damaging the battery.lithium iron lifepo4,Lead-Acid (PB/AGM/GEL/EFB, MF, FLOODED, VRLA, SLA ，wet batteries...)which means it can be used in cars, trucks, motorcycles, electric cars, RV, SUV, golf carts, tricycles, agricultural vehicles, buses, yachts, motorboats,And more batteries. lithium,lifepo4: (14.6V/29.2V).Lead-Acid:(12V:14.7V/24V:29.4V) Note: LIPO batteries are prohibited.
- 🚗[Battery protection repair]Automatic identification of batteries, no need to select. AC input voltage :100-240V 50/60Hz Output voltage :12V/24V Output current :12V15A&24V10A Minimum starting voltage :GT;2.0V size :158x90x50mm Net weight :400g Automatically identify the battery status, select the appropriate charging current to charge and protect the battery.One-button repair function extends battery life.It cannot activate a completely failed battery and restore it to a completely new state.
- 🚚【Automatic Charging】Automatic detection of 12V or 24V battery, automatic monitoring of the entire charging process through the latest intelligent CPU control program. Automatically adjust the charging current, so that it can run at full speed in winter, and it is not overloaded in summer, and it can easily cope with various harsh voltage environments.
- 🚌【Safety Charging】Adopt ABS flame-retardant shell, fireproof, anti-shock, corrosion resistance, sturdy and durable, built in circuit protection, spark free system, reverse polarity protection, over-charge, over-voltage and over-temperature protection. The intelligent LCD display shows the charging status and battery status, so that you can charge more at ease. Please read the instructions carefully before proceeding.
- ✔【Robust Quality and Service】We are a professional charger brand. We have high-quality products and after-sales service. For this product, we provide a five-year warranty and permanent after-sales service.If you have any questions, don't hesitate to contact us! 📦📦【What You Get】Smart Charger, 3m power cord, clip cord, manual, 2 Cable lugs！
Bestseller No. 7 
SUHU 2-Amp Trickle Charger, 6V 12V Automatic Battery Charger Maintainer and Battery Desulfator for Cars Motorcycle Truck Lawn Mower Boat Marine RV SUV ATV AGM Gel Lead Acid Battery
- Advanced Battery Maintainer -- Fully-automatic trickle charger, delivers power all-weather battery charger, battery maintainer, trickle charger, and battery desulfator, perfect for year-round battery maintenance. And the battery charger have LED indicator, charging status is clear at a glance
- Wide Application -- Designed for 6 volt and 12 volt lead-acid battery, marine, and deep-cycle batteries within 4-60Ah, like flooded, gel, AGM and more(STD mode), plus LiFePO4 battery(12V LFP mode). Charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars and more
- Restore your battery -- Automatically detects battery sulfation and acid stratification, restore lost battery performance with high efficiency pulse repair function and extended battery life withouth manual operation. Note: can not activate or charging totally dead batteries
- Multi Safety Protections -- 8 Stage charging protection avoid overcharge and discharge in hot climates (104℉) and under-charging in cold climates(-4℉). Built in circuit protection guards against reverse polarity, over-current, overload protection, over-voltage and more protection. Adopt ABS flame-retardant shell, fireproof, electric shock, IP65 waterproof ensure the safety charging at anytime anywhere
- Robust Quality and Service -- SUHU 6V/12V 2A automotive smart trickle charger maintainer in order to save batteries and have them be ready when you use them again. We are always standing by your side and ready to help you. Any questions, please feel free to contact us by email
SaleBestseller No. 8 
LST Trickle Battery Charger Automatic Maintainer 6V 12V Smart Float Charger for Automotive Car Motorcycle Lawn Mower Tractor SLA ATV AGM Gel Cell Lead Acid Batteries
- √ Battery and Vehicle Type - Charge fully drained 6V&12V pb/sla/gel/agm/lead-acid batteries, it's automatic battery trickle chargers for automotive, motorcycles, automobile, riding lawn mowers, lawn tractor, ATVs, RVs, watercraft, powersport, scooter, snowmobiles, cars, camper, trolling motor, boats, etc
- √ Safety Guarantee - Multi protection against Reverse Polarity, Short Circuit, Over Voltage/Current, Over Charge/Discharge, Overload, Overheat; Spark proof during lead connection; Water and dust resistant float battery charger, full-loaded and burn-in test proves its stable performance and high reliability.
- √ 5-Stage Automatic Charging - Featured detachable ring or alligator connectors with 10A fuse, charge and maintain your battery wherever you go; Monitor the whole charging process, automatically switches to float mode after fully charging the battery by MCU controlled; LST motorcycle battery charger will recover batteries more effectively and extend the battery life.
- √ Intuitive LED Indicator - LST 6/12 volt automotive battery maintainer charger provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode. Input 100-240V, ultra-compact and lightweight, easy to carry the motorcycle charger everywhere.
- √ 100% Satisfactory Float Charger - Updated with defective battery recognition function and 72-hour safety features, just get portable 6v 12v trickle charger for car batteries with confidence; LST smart battery charger offer 3-Year quality assurance & 12-Month refund & timely 24/7 after-sale services.
SaleBestseller No. 9 
Renogy 12V 40A DC to DC On-Board Battery Charger for Flooded, Gel, AGM, and Lithium, Using Multi-Stage Charging in RVs, Commercial Vehicles, Boats, Yachts, 40A
- 【Compatible Multiple Battery Types】 Compatible with a multitude of alternator types, the DC-DC battery charger offers correct charging for AGM, Flooded, Gel, and Lithium batteries.
- 【Smart 3-stage Charging】 The DC-DC battery charger will charge your house batteries from the starter battery by 3-stage charging (Bulk, Boost, and Float), to make sure it optimally and automatically charge to 100%.
- 【Various Protections For Ultra Safety】 Offers Over-voltage Protection, Over-temperature Protection, and Reverse Polarity Protection to ensure the operation safety. It also isolates the input and output to prevent voltage transmission errors and interfere with house battery charging.
- 【Protect Your Starter Battery】The DC-DC battery charger is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator.
- 【Reliable Quality】The compact and robust design makes it suitable for all conditions. CE certification.
SaleBestseller No. 10 
LST 12V Battery Trickle Charger Maintainer Portable Smart Float Charger for Car Motorcycle Lawn Mower SLA AGM GEL CELL WET Lead Acid Batteries
- √ Perfect for all 12V lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell); It's smart car battery charger for automobiles, automotive, marine, boats, camper, trolling motor, RVs, ATVs, watercraft, powersport, riding lawnmower, lawn tractor, snowmobiles, etc.
- √ Safety Guarantee - Multi protection against Reverse polarity/ Short Circuit/ Over Voltage/ Over Current/ Overload/ Overheat; Spark proof during lead connection; Water and dust resistant float charger, full-loaded and burn-in test proves its stable performance and high reliability.
- √ 4-Stage Automatic Charging - Features with detachable ring or alligator connectors, charge and maintain your battery wherever you go; the battery maintenance charger monitor the whole charging process, automatically switches to float mode after fully charging the battery by MCU controlled; LST motorcycle battery charger will recover batteries more effectively and extend the battery life.
- √ Intuitive LED Indicator - 12 volt automotive battery maintainer charger provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode. Input 100-240V, ultra-compact and lightweight, easy to carry the 12v battery charger everywhere.
- √ 100% Satisfactory Float Charger - You will get awesome trickle chargers for 12 volt batteries with decent package; LST trickle battery charger offer 3-Year quality assurance & 12-Month refund & timely after-sale services.
Last update on 2023-03-28 / Affiliate links / Images from Amazon Product Advertising API