Our Favorite Picks:
The 20 Best Rv Battery Tender Reviews:
SaleBestseller No. 1 
Battery Tender 5 AMP, 12V Battery Charger, Battery Maintainer: Fully-Automatic Battery Charger for Cars, Trucks, SUVs and More - Smart Automotive Battery Chargers - 022-0186G-DL-WH
- STAY CHARGED: The powerful 5 amp charger provides a full charge to your automotive vehicle’s battery before automatically going into float mode to maintain proper voltage levels without overcharging. 5 amps 12 volt charger/maintainer
- CONNECT AND FORGET: With a low maintenance design, our universal powersport vehicle charger and maintainer is compact, lightweight, and easy to operate even in small storage space for your convenience
- EXTENDED BATTERY LIFE: Compatible with lead-acid, flooded, and sealed maintenance free batteries (AGM and gel cell) and ideal for use in long term storage to provide and maintain an optimal charge. Input voltage 120VAC @ 60 Hz
- MONITOR POWER LEVELS: A solid state two-color LED light indicates the charging status and if the battery voltage drops too far under load, ISM adaptive charging will resume full charger output power. It is UL/CSA, CE and BC approved
- SAFE AND SECURE: Our battery charger and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power. 5 year warranty.4-Step Fully Automatic Charging (Initialization, Bulk, Absorption, Float)
Bestseller No. 2 
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
- STAY CHARGED: Provides a full charge to your powersports vehicle’s battery before switching to float mode to maintain proper voltage levels for safe, long-term storage without overcharging
- EXTEND BATTERY LIFE: Compatible with all 12V lead-acid, flooded, AGM, and gel cell batteries. Complete 4-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging
- INCLUDES: 12V, 1.25 AMP battery charger, fused ring terminal and alligator clip accessory cables, 10-year warranty, and lifetime customer support
- EASY TO USE: Low maintenance design is quick and easy to use, this universal powersport vehicle charger and maintainer is 4.87 x 3.25 x 2.93 inches, 1.45 lbs (charger only)
- MONITOR POWER LEVELS: Solid state two-color LED light indicates the state of the charge and if the battery voltage drops too far under load, charging will resume full charger output power
Bestseller No. 3 
Battery Tender 12V, 75 AMP Engine Start Assist, 20 AMP Battery Booster, and Battery Charger and Maintainer with Battery Monitoring
- ALL IN ONE: Powers your vehicle's battery as a booster or jump starter, fully charges and automatically switches to maintenance mode to keep your battery at an optimal. Wireless connectivity to mobile device via Wi-Fi (point to point and Network) to the Deltran Connected App via mobile device
- 4 FUNCTIONS: Equipped with 4 charging modes (1.25 amp charging, 20 amp boost, 75 amp engine start assist, and power supply) to be the ultimate 12 volt battery charging accessory for every situation
- WIRELESS CONNECTIVITY: Features integrated Wi-Fi that allows you to connect your charger to the internet, so you can stay informed, get alerts, and control your charger from the Deltran Connected app
- VERSATILE COMPATIBILITY: Compatible with standard, AGM, and lithium ion batteries to be ideal for use with a variety of automotive vehicles with different power outputs for every charging situation
- SAFE AND SECURE: Our portable booster protects against short-circuiting and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power
SaleBestseller No. 4 
Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, Charge, and Maintain your Battery. It's Encapsulated and Protected from Moisture by an Electrical Insulation
- All the charging characteristics of the Battery Tender Junior: fully-automated “SuperSmart” charging and maintaining, spark proof, reverse polarity protection, and short circuit protection
- The interior is completely encapsulated, protected from shock, vibration, and moisture by an electrically insulating, thermally conductive, flame retardant, synthetic epoxy resin compound
- This charger is no larger than a standard computer mouse yet packs 800 milliamps of pure constant current charging power and is listed in the California Appliance Efficiency Database
- Includes alligator clips and ring terminals, and is perfect for all outdoor types of ATV's, watercraft, motorcycles, boats, or anywhere water is a threat, including lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell).
- AC Power Cord Length: 6 ft.- 18 AWG; DC Output Cord Length: 4.5 ft. - 18 AWG; DC Output Accessory Length: 1.5 ft.
SaleBestseller No. 5 
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
- STAY CHARGED: Battery Tender battery chargers and maintainers provide a full charge to your powersport vehicle’s battery before switching to float mode to maintain proper voltage levels for safe, long-term storage
- EXTEND BATTERY LIFE: Compatible with all 12V lead-acid, flooded, AGM, and gel cell batteries. Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode) allows for optimization of battery power, without overcharging or battery damage
- INCLUDES: 12V, 750mA battery charger and battery maintainer with 12-foot output cord, fused-ring terminal harness for hard-to-reach batteries and alligator clip accessory cables, 5-year warranty, and lifetime customer support
- SIMPLE & SAFE: Low maintenance, easy-to-use, universal battery charger is just 3.3 x 1.3 x 2.4 inches, 1 lb (charger only). Spark-proof circuitry ensures no-spark connections, and automatic reversed hook-up detection verifies correct connection
- MONITOR POWER LEVELS: Two-color charge status LED light indicates the state of the charge and if the battery voltage drops too far under load, adaptive charging will resume full charger output power. Automatic charge cycle functionality switches to float mode after fully charging the battery
SaleBestseller No. 6 
Battery Tender 4 AMP Car Battery Charger and Maintainer: Switchable 6V / 12V, Automotive Battery Charger and Maintainer for Cars, Trucks, and SUVs, Lead Acid & Lithium Battery Charger - 022-0209-BT-WH
- STAY CHARGED: The 4 amp car battery charger automotive provides a full charge to your machine's battery before automatically switching to float mode to maintain proper voltage levels for your battery without overcharging
- FULLY SELECTABLE: With the push of a button, easily switch from AGM or flooded and lithium ion (LiFePO4) batteries to provide and maintain an optimal charge level for 6 and 12 volt batteries alike
- HIGH POWERED: 4 amp switchable car battery charger automotive delivers a powerful charge to keep your car, SUV, pickup truck, or boat battery at peak performance by providing reliable engine starts and extended battery life
- EASY TO USE: A low maintenance design that's quick and simple to use, our switchable automobile charger and maintainer is compact and lightweight to operate everywhere, even in small storage spaces
- SAFE AND SECURE: Our car battery charger automotive and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power. 5 Year Industry Leading Warranty
Bestseller No. 7 
Battery Tender 2 Bank Battery Charger and Maintainer, 12 Volt 1.25 AMP for Motorcycles, ATVs, Lawn Mowers
- Solid state two color LED indicates stage of charger; spark proof and reverse polarity protected
- Two independent charging stations, each providing 12 volts/1.25 amps, with temperature compensation to ensure optimum charge voltage according to ambient temperature
- Complete 3-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging
- Perfect for all AGM (absorbed glass mat), sealed maintenance free and flooded batteries
- 2-year limited warranty
SaleBestseller No. 8 
Battery Tender Junior 12V Battery Charger and Maintainer: 800mA 12 Volt Battery Charger for Lead Acid and Lithium Batteries - Switchable Battery Charger for Powersports - 022-0199-DL-WH
- STAY CHARGED: 12V Battery Charger, 800mA Selectable Lead Acid/Lithium Battery Charger It will keep your battery fully charged so that it is ready to go when you are
- LEAD-ACID AND LITHIUM: Power lead-acid (AGM, flooded, or gel) or lithium (LiFePO4) batteries with this smart charger and maintainer by switching to the desired battery type with the push of a button
- SUPERSMART TECHNOLOGY: An ISM microcontroller constantly updates charge sequence to ensure the proper level is sent to your motorcycle, ATV, UTV, personal watercraft, or scooter battery at all times
- EASY TO USE: A low maintenance design that's quick and easy to use, our power sport 12v battery charger and maintainer is lightweight and compact allowing it to operate everywhere even in small spaces
- SAFE AND SECURE: Our 12 volt battery charger and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power. 5 Year Industry Leading Warranty
Bestseller No. 9 
Battery Tender Plus 12V Battery Charger and Maintainer: Selectable 6V, 1.25 Amp, 12V Battery Charger and Maintainer for Powersports - Switchable 6 and 12V Battery Float Charger - 022-0211-DL-WH
- STAY CHARGED: The 1.25 amp, 12 volt battery charger provides a full charge to your powersports battery before automatically switching to float mode to maintain proper voltage levels without overcharging the battery
- HIGH POWERED: Contains 50% more charging power than the Battery Tender Junior to supply a much quicker charge to your motorcycle, ATV, UTV, personal watercraft, or scooter to maintain peak performance
- EASY TO USE: A low maintenance design that's quick and easy to use, our universal power sports 12 volt battery charger is lightweight and compact allowing it to operate everywhere, even in small storage spaces. Sparkproof - Battery Tender checks for a correct connection befo
- EXTENDED BATTERY LIFE: Compatible with lead-acid, flooded, and sealed maintenance free batteries (AGM and gel cell) and ideal for use in long term storage to provide and maintain an optimal Connect It And Forget It: Once connected, the Battery Tender Charger manages your battery’s health on it’s own
- SAFE AND SECURE: Our selectable 12 volt battery charger and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a proper connection before providing power. 5 Year Industry Leading Warranty
SaleBestseller No. 10
Battery Tender 12V, 800mA Weather Resistant Battery Charger and Maintainer - Water Resistant 12 Volt Battery Charger for, ATV, Personal Watercraft, Jet Skis - 800mA Battery Charger - 022-0150-DL-WH
- Designed for 12 volt lead acid, AGM, and gel batteries in ATVs, personal watercraft, motorcycles, boats, or other recreational vehicles that may be exposed to the elements
- Mountable on or in vehicle, water resistant, shock and vibration resistant. Spark-proof and reverse polarity protected
- Includes 12V, 800mA battery charger, ring terminal and alligator clip connectors, 12 ft cord reach, 3-year warranty and lifetime customer support
- Unit Dimensions: 4.35“ x 2.75“ x 1.5“; Unit Weight: 1 lb (charger only)
Bestseller No. 11 
Andeman 6-Amp Automotive Smart Battery Charger, 6V 12V 6A / 14.4V 4.5A Portable Battery Tender Car Battery Charger, Deep Cycle Battery Maintainer for Car Truck Motorcycle Motorboat SUV UTV ATV RV
- Charging Functions: Our battery charger using the latest charging curves, perfect for charging all 6V 12V 6A lead acid batteries, AGM batteries (SLA, VRLA, GEL), Lithium/ 14.4V 4.5A LiFePO4 batteries, 12V 6A for DC adapter, Battery Tester. Min.starting voltage: 2.0V. Battery capacities: charging (10-120Ah), maintenance(10-150Ah)
- Widely Used: 4 in 1 Battery Charger with LCD display. Input: Auto-switching 100-240V AC, 50-60Hz. Suitable for car, truck, motorcycle, SUV, UTV, ATV, RV, motorboat, jet ski, dirt bike, golf cart, snowmobile and so on.
- Charging Protection: Battery charger have Overcharge Protection/ Overload Protection/ Reverse Polarity Protection/ Over Heat Protection/ Bad battery detection. With CE RoHS FCC ETL certificate.
- Adaptive Charging and Low Temperature Charging: This Charging Curve Regenerates sulphated and/or deep discharged SL A and EFB Batteries. Waterproof Level: IP65.
- Pakeage Include: Professional EP charging device; AWG16 0.6M DC Cable with SAE connector; AWG 16 0.6M battery connection cable with O-rings and 10A Fuse; AWG 16 0.6M battery connection cable with clamps; AWG 16 0.6M cigarette lighter Plug; STP-1 1M Power supply cable; User manual
Bestseller No. 12 
Andeman 1.5-Amp Automotive Smart Battery Charger, 6V 12V 14.4V Portable Battery Tender Car Battery Charger, Deep Cycle Battery Maintainer for Car Truck Motorcycle Motorboat SUV UTV ATV RV
- Charging Protection: Fully auto 4-stage charging process by MCU controlled, allows for optimization of battery power, without over charging. Battery charger have Overcharge Protection/ Overload Protection/ Reverse Polarity Protection/ Over Heat Protection/ Bad battery detection. With CE RoHS FCC ETL certificate.
- Charging Functions: Our battery charger using the latest charging curves, perfect for charging all 6V / 12V AGM batteries (SLA, VRLA, GEL, AGM, Lead-acid battery pack), & 4S Lithium/ 14.4V LiFePO4 batteries. Min.starting voltage: 3.0V. Charging current: 1.5A (charging current will be automatically adapted for an optimal charging result).
- Widely Used: Input: 100-240V AC, 50-60Hz, 1.0A. Battery capacities: charging (5-40Ah), maintenance(5-60Ah). 6V/12V output by switch on, maintaining the deep cycle battery. Suitable for car, truck, motorcycle, SUV, UTV, ATV, RV, motorboat, jet ski, dirt bike, golf cart, snowmobile and so on.
- Timer Protection: To protect the battery no overcharge, charger provides the maximum charging time for each charging stage, in the event it is wired to recharge a larger than recommended battery, charger will stop charging after maxiumum stage recommended time and start maintaining mode automaticly.
- Pakeage Include: Professional EP charging device; AWG18 1.2M DC Cable with SAE connector; AWG 18 0.6M battery connection cable with clamps; AWG 18 0.6M battery connection cable with O-rings and 10A Fuse; User manual in English.
Bestseller No. 13 
Battery Tender Junior 12V, 800mA Battery Charger and Maintainer
- Perfect for all lead-acid, flooded, or sealed maintenance free batteries (AGM and gel cell)
- Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode)
- Automatically switches to float or maintenance voltage after fully charging the battery so the vehicle can be stored
- If the battery voltage drops too far under load, full charger output power resumes
- Solid state two color LED indicates stage of charger for an easy read
Bestseller No. 14 
NOCO GENIUS2X2, 2-Bank, 4A (2A/Bank) Smart Car Battery Charger, 6V/12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for AGM, Motorcycle and Lithium Batteries
- Meet the GENIUS2X2 - A two-bank battery charger for charging multiple batteries. It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator.
- Multiple banks - A two-bank battery charger maintainer rated a 4-amps - 2-amps per bank - designed to charge and maintain multiple vehicles like cars, motorcycles, ATVs, boats, RVs, trucks, lawn mowers, tractors and more.
- Do more with Genius - Designed for 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).
- Enjoy precision charging - An integrated digital thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
SaleBestseller No. 15 
NOCO GENIUS1, 1A Smart Car Battery Charger, 6V and 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Motorcycle, ATV, Lithium and Deep Cycle Batteries
- Meet the GENIUS1 - Similar to our G750, just better. It's 35% smaller and delivers over 35% more power. It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator.
- Do more with Genius - Designed for 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).
- Enjoy precision charging - An integrated digital thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - An advanced battery repair mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
Bestseller No. 16 
Foval Automatic Trickle Battery Charger 12V 1000mA Smart Battery Charger
- (Safety with ETL Listed): Spark proof during lead connection, reverse polarity protected and includes a 8 foot output cord and 2 year warranty
- Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell), also Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode)
- Small size 3.9 x 2.4 x 1.25 in and suitable for Most Vehicles: adapts to all kinds of 12V battery for automobiles, motorcycles, ATVs, personal watercraft, RVs, boats, airplanes, golf carts, back-up generator systems lawn mower, etc, batteries using either the ring or alligator connectors, automatically switches to float, maintenance voltage after fully charging the battery
- Intuitive LED indicators provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode.
- It will charge and maintain your battery so that it is ready to go when you are! It's lightweight, fully automatic and easy to use
SaleBestseller No. 17 
MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator
- 🔥【Charger, Maintainer & Desulfator】 - An all-weather battery charger, battery maintainer, trickle charger, and battery desulfator. Perfect for charging and maintaining all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell). ETL safety standard Listed.
- 🔥【Automatic Desulfation & Optimization】 - Automatic detection of battery sulfation problem. Applying with pulse current technology to desulfate the batteries effectively. Optimize the battery performance during charging without any manual operation.
- 🔥【Energy Saving & Spark Free】 - Zero output in standby mode. No battery drain when connecting with the battery. Spark proof during lead connection for safety.
- 🔥【ETL/UL Certified, Multi-level Safety Protection & Timer Set Up】 - ETL safety certified. Overcharge, short circuit and reverse polarity protected. Charge the battery up to 14.4V and Maintain the battery at 13.6V for long time to avoid gasing and to extend the battery life. 24-hour Timer is set up in the program to terminate the charge and enter the maintaining mode once the voltage is above 14V to ensure safety.
- 🔥【Easy Operation】 -Just plug-in, connect to the battery and start charging or maintaining your battery. The desulfation is working automatically during the charing. No manual operation.
SaleBestseller No. 18 
NOCO GENIUS5, 5A Smart Car Battery Charger, 6V and 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Motorcycle, ATV, Lithium and Deep Cycle Batteries
- Meet the GENIUS5 - Similar to our G3500, just better. It's 34% smaller and delivers over 65% more power. It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator.
- Do more with Genius - Designed for 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).
- Enjoy precision charging - An integrated digital thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - An advanced battery repair mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
Bestseller No. 19 
NOCO GENIUS10, 10A Smart Car Battery Charger, 6V and 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Motorcycle, ATV, Lithium and Deep Cycle Batteries
- Meet the GENIUS10 - Similar to our G7200, just better. It's 17% smaller and delivers over 115% more power. It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator.
- Do more with Genius - Designed for 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).
- Enjoy precision charging - An integrated digital thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - An advanced battery repair mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
SaleBestseller No. 20 
10W 12V Solar Battery Charger & Maintainer, Waterproof 10 Watt 12 Volt Solar Trickle Charger, Built-in Intelligent MPPT Charge Controller for Car Automotive Boat Marine RV Trailer Motorcycle
- 【SMART CHARGING】Built-in intelligent MPPT charge controller chip helps to regulate the whole charging, generating at least 10%-20% more power than competitors. Smart 3-stages of charging algorithm is improved to better charge and maintain battery at a stable level for extended battery life.
- 【FULL PROTECTIONS】Prevent the battery from overcharge, over-voltage, discharge, and short circuit, reversed polarity protection, IP65 waterproof and spark-proof, the battery is fully protected. BEWARE OF SIMILAR CHARGERS WERE SIMPLY INTEGRATED A DIODE INSTEAD OF MPPT CHARGE CONTROLLER, IT WILL NOT PREVENT OVER CHARGE, WILL CAUSE IRREPARABLE DAMAGE TO BATTERY.
- 【EASY TO MONITOR】The LED indicator allows to visually monitor the working status and battery conditions. The charging will be cut off when battery is fully charged and resumed automatically when battery is drained, totally free maintenance.
- 【ROBUST & DURABLE】Made of durable and strong ABS frame instead of PVC fabric, which could withstand high temperature and UV irradiation. The tempered glass help solar cells to stand high wind and load pressure, Windproof and rainproof, well built for years. BEWARE OF CHEAPLY MADE ABS AND FABRIC SOLAR CHARGERS WHICH ARE EASILY DISINTEGRATED BY UV AND MAY CATCH FIRE.
- 【WIDE APPLICATION】Safely used as a solar trickle charger and maintainer for different 12V DC batteries including Wet Gel Cell, Deep Cycle,Flooded, Maintenance-free, AGM, Seal Lead Acid and LiFePO4 Lithium Battery. A variety of scenarios for car, boat, RV, trailer, marine, camper, lawnmower, motorcycle, jet ski, water pump, tractors, etc.
Last update on 2023-06-07 / Affiliate links / Images from Amazon Product Advertising API