The best battery float chargers will monitor the battery’s charge status and only start charging when the battery is near empty. They will also stop charging when the battery is at full capacity and then switch to a low-draw mode, so they won’t waste energy if the battery is in a near-full state.
To help you find the right charger for your battery needs, we’ve rounded up the best car battery float chargers on the market.
Read on for our top picks.
Our Editor’s Best Car Battery Float Charger Reviews
Battery Tender Junior 12V Charger and Maintainer: Automatic 12V Powersports Battery Charger and Maintainer for Motorcycle, ATVs, and More – Smart 12 Volt, 750mA Battery Float Chargers – 021-0123

Key Features:
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This is a car battery charger that will charge your battery to full capacity before switching to a float mode to maintain voltage levels. This is ideal for long-term storage of your vehicle’s battery.
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This car battery float charger will help extend the life of your car battery by charging it in four steps: Initialization, Bulk Charge, Absorption Mode, and Float Mode. This charger is compatible with all 12V lead-acid, flooded, AGM, and gel cell batteries.
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This car battery float charger is a 12V, 750mA battery charger and battery maintainer with a 12-foot output cord. It comes with a fused-ring terminal harness for hard-to-reach batteries and alligator clip accessory cables. It has a 5-year warranty, and lifetime customer support.
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This car battery charger is simple to use and maintain, and is a universal charger that is only 1 lb. The spark-proof circuitry ensures that there are no sparks when you connect it, and the automatic reversed hook-up detection verifies that you have connected it correctly.
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This car battery float charger will help to monitor power levels and will automatically charge the battery when it is needed. The two-color charge status LED light will indicate when the battery is charging and when it is fully charged.
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

Key Features:
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This is a charger that can be used to charge a variety of different types of batteries. It is automatic, meaning that it will shut off when the battery is fully charged.
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This car battery float charger is a reliable and safe way to keep your car battery charged. It is multi-protected against reverse polarity, short circuit, over voltage/current, over charge/discharge, overload, and overheat. It is also spark proof during lead connection and water and dust resistant.
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This car battery float charger is a 5-stage automatic charger that features detachable ring or alligator connectors with 10A fuse. It can charge and maintain your battery wherever you go, and it will automatically switch to float mode after fully charging the battery.
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This battery charger is designed to maintain the charge in a car battery, and has an LED indicator to show the state of charge. It is compact and lightweight, making it easy to take with you on the go.
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The LST smart battery charger is a portable 6v 12v trickle charger for car batteries that has been updated with a defective battery recognition function and 72-hour safety features. It comes with a 3-Year quality assurance and 12-Month refund, as well as timely 24/7 after-sale services.
NOCO GENIUS1, 1A Smart Car Battery Charger, 6V and 12V Portable Automotive Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Lithium, ATV, Motorcycle and Deep Cycle Batteries

Key Features:
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The GENIUS1 is a car battery float charger that is 35% smaller than the G750 and delivers over 35% more power. It is an all-in-one universal charging solution that can also be used as a battery maintainer, trickle charger, and float charger. Plus, it can also desulfate batteries.
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This is a car battery charger that can be used for a variety of different types of batteries. It is designed to be used with 6-volt and 12-volt sealed lead-acid automotive, marine, RV, powersport, and deep-cycle batteries, including flooded, gel, AGM, SLA, VRLA and maintenance-free, plus lithium-ion batteries (lifepo4).
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This is a car battery float charger that has an integrated digital thermal sensor. This sensor will detect the ambient temperature and alter the charge to eliminate over-charging in hot climates and under-charging in cold climates.
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This car battery float charger will charge dead batteries as low as 1-volt, or you can use the new force mode to manually begin charging dead batteries down to zero volts.
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This is a battery charger that uses pulse reconditioner technology to repair batteries. It is designed to extend battery life and improve engine starts.
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This is a battery charger that will help maintain your battery so that it does not overcharge. It is worry-free and can be used 24/7.
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This car battery float charger is compatible with all types of gas and diesel vehicles. It can charge and maintain cars, automobiles, motorcycles, dirt bikes, scooters, mopeds, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, PWCs, jet skis, snowmobiles, golf carts, classic cars, and more.
Orion Motor Tech 12V Battery Charger and Maintainer, Multipurpose Set for Charging Boats Motorcycles ATVs Riding Mowers & Car Truck SUV RV Maintenance with Smart 3 Stage Charging & Power Indicator

Key Features:
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This battery charger is designed to charge various types of 12V lead-acid batteries, including flooded and sealed maintenance-free batteries such as AGM and gel batteries.
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This is a battery charger that can be used on a variety of different vehicles, including boats, motorcycles, ATVs, and riding mowers. It can also be used to maintain the battery performance of a car, truck, SUV, or RV.
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This car battery float charger is safe to use and will efficiently charge your battery while protecting it from overcharging, short circuits, overheating, and high voltage spikes.
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This is a car battery charger that automatically senses and fixes any potential problems during charging, and has indicator lights to let the user know the charging status of the battery.
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This is a portable trickle battery charger with a 1 year warranty.
Car Battery Charger 12V Automatic Smart Battery Charger Maintainer Trickle Charger for Boats Motorcycles ATVs Riding Mowers & Car Truck SUV RV with Smart 3 Stage Charging & Power Indicator, Red

Key Features:
Foval Automatic Trickle Battery Charger 12V 1000mA Smart Battery Charger

Key Features:
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This car battery float charger is safe to use and includes a 8 foot output cord and 2 year warranty.
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The car battery float charger is perfect for all lead-acid, flooded or sealed maintenance free batteries. It has a complete 4-step charging program that includes initialization, bulk charge, absorption mode, and float mode.
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This is a small, 3.9 x 2.4 x 1.25 inch float charger that is suitable for most vehicles. It has ring or alligator connectors and automatically switches to float voltage after fully charging the battery.
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This car battery charger has LED indicators that tell the shopper the battery’s state-of-charge and if there are any problems.
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This battery charger is designed to keep your car battery charged and ready to go. It is fully automatic and easy to use, and its lightweight design makes it easy to store and transport.
Battery Tender Plus 12V Battery Charger and Maintainer: 1.25 AMP Powersport Battery Charger and Maintainer for Motorcycles, ATVs, UTVs – Smart 12 Volt Automatic Float Charger – 021-0128

Key Features:
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This car battery float charger is perfect for a shopper who wants to maintain proper voltage levels for safe, long-term storage without overcharging. The float mode will keep the battery charged and ready to go, so you can be sure your vehicle is always ready to hit the road.
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The car battery float charger is a device that can be used to extend the life of a car battery. It is compatible with all 12V lead-acid, flooded, AGM, and gel cell batteries. The charger has a 4-step charging program that allows for optimization of battery power, without overcharging.
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The car battery float charger comes with a 12V, 1.25 AMP battery charger, fused ring terminal and alligator clip accessory cables, 10-year warranty, and lifetime customer support.
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This car battery float charger is designed to be quick and easy to use, with a low maintenance design. It is 4.87 x 3.25 x 2.93 inches, and 1.45 lbs (charger only).
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This car battery float charger has a solid state two-color LED light that indicates the state of the charge. If the battery voltage drops too far under load, charging will resume at full charger output power.
[4-Pack] LEICESTERCN Automatic Trickle Battery Charger Maintainer 12V 750mA Smart Float Charger for Car Motorcycle Lawn Mower Tractor Boat SlA ATV WET AGM GEL Cell Lead Acid Batteries
![[4-Pack] LEICESTERCN Automatic Trickle Battery Charger Maintainer 12V 750mA Smart Float Charger for Car Motorcycle Lawn Mower Tractor Boat SlA ATV WET AGM GEL Cell Lead Acid Batteries](https://m.media-amazon.com/images/I/51ZQS9VDl9L._SL500_.jpg)
Key Features:
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This is a lead-acid battery charger that can charge all types of 12V lead-acid batteries, including flooded or sealed maintenance free batteries (AGM & gel cell). A smart car battery charger for automotive, motorcycle, marine, RV, Powersport, lawn&garden, children toys, etc.
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This car battery float charger is a three-stage smart charger that automatically switches to float mode after fully charging the battery.
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This car battery float charger has two LED indicators that show the charging status of the battery. The first is a yellow light that indicates the battery is charging. The second is a green light that indicates the battery is fully charged or in maintenance mode. The red light indicates that the battery has reverse polarity.
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This is a battery charger that you can leave plugged in to maintain your battery life and prevent overcharging. It is also effective in extending battery life and recovering batteries.
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This is a car battery charger that is certified by ETL, CE, FCC, and RoHS. It comes with a 3-year quality assurance and 24/7 customer service. It is designed to eliminate all worries about getting this car battery charger.
MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator

Key Features:
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This is a car battery charger that can also maintain and desulfate batteries. It is ETL safety standard listed.
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This is a car battery float charger that automatically detects battery sulfation problems and applies pulse current technology to desulfate the batteries effectively. It also optimizes the battery performance during charging without any manual operation.
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This is a car battery charger that is designed to be energy efficient and safe. It has a feature that allows it to be spark free when connecting to a battery, which makes it safer to use.
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This battery charger is ETL certified and features multi-level safety protection against overcharging, short circuits, and reverse polarity. It also has a timer set up to automatically terminate the charge and enter maintaining mode once the voltage is above 14V.
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This car battery float charger is easy to operate – just plug it in, connect it to the battery, and it will start charging or maintaining your battery. The desulfation process will happen automatically during the charging process, so there is no manual operation required.
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This car battery float charger comes with a 2 year warranty and 100% satisfaction service. If you are not pleased with the product, you can contact motopower directly for a hassle-free return and refund.
LST 12V Battery Trickle Charger Maintainer Portable Smart Float Charger for Car Motorcycle Lawn Mower SLA AGM GEL CELL WET Lead Acid Batteries

Key Features:
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This is a car battery charger that is perfect for all 12V lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell). It is a smart car battery charger for automobiles, automotive, marine, boats, camper, trolling motor, RVs, ATVs, watercraft, powersport, riding lawnmower, lawn tractor, snowmobiles, etc.
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This car battery float charger is safe to use and is designed to protect your car battery from overcharging. It is also water and dust resistant, making it ideal for use in all conditions.
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The LST motorcycle battery charger is a float charger that features detachable ring or alligator connectors, allowing you to charge and maintain your battery wherever you go. The battery maintenance charger monitors the entire charging process and automatically switches to float mode after fully charging the battery, which will help recover batteries more effectively and extend the battery life.
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This is a 12 volt automotive battery maintainer charger that is ultra-compact and lightweight. It has an intuitive LED indicator that provides visual state-of-charge feedback and diagnostic information, even when in maintenance mode. The input is 100-240V, making it easy to carry the 12v battery charger everywhere.
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The car battery float charger is a trickle charger for 12 volt batteries. It comes with a 3-year quality assurance and a 12-month refund. It also offers timely after-sale services.
Car Battery Float Charger FAQs
1. What is a car battery float charger?
A car battery float charger is a type of charging device that is used to keep a car battery at its full charge. This type of charger is typically used when a car is not being driven for an extended period of time, such as when it is stored in a garage.
2. How does a car battery float charger work?
A car battery float charger is a charger that is used to maintain the charge in a lead-acid battery. The charger provides a small amount of current to the battery to keep it at its full charge.
3. What are the benefits of using a car battery float charger?
The benefits of using a car battery float charger are that it can help to extend the life of your car battery and it can also help to keep your car battery charged.
4. How do I choose the right car battery float charger for my vehicle?
The first step is to identify the make, model, and year of your vehicle. Once you have that information, you can consult a car battery float charger compatibility chart to find the right charger for your vehicle.
5. How do I use a car battery float charger properly?
A “car battery float charger” is also known as a “trickle charger.” It is used to maintain the charge on a car battery when the car is not being used, and it is not connected to the car’s charging system.To use a trickle charger, first make sure that the charger is rated for the voltage of the car battery. Most car batteries are 12 volt, but some are 6 volt.Next, connect the positive terminal of the charger to the positive terminal of the battery, and connect the negative terminal of the charger to the negative terminal of the battery.Finally, plug the charger into a wall outlet and turn it on. The charger will maintain the charge on the battery, and will turn itself off when the battery is fully charged.
Conclusion
There are many great car battery float charger on the market. Our list of the best car battery float charger will help you save time researching and choosing the best one for you.