Top 10 Battery Charger Maintainers for January 2021

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1
NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation
design_servicesDESIGN
miscellaneous_servicesUTILITY
handymanUSABILITY

NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation

by NOCO
What We like

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.

9.8
SCORE
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Product Features

  • Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • GENIUS10 - Similar to our G7200, just better. It's 17% smaller and delivers 115% more power. It's the all in one solution battery charger, battery maintainer, trickle charger, plus battery desulfator.
  • Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
  • Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

Beyond maintenance - it's not just a trickle charger, it's an advanced battery maintainer. a fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge. Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawnmowers, atvs, lawn tractors, trucks, suvs, boats, pwcs, classic cars, and more. Enjoy precision charging - an integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates. Genius10 - similar to our g7200, just better. it's 17% smaller and delivers 115% more power. it's the all in one solution battery charger, battery maintainer, trickle charger, plus battery desulfator. Do more with genius - designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, agm, and maintenance-free, plus lithium-ion batteries. Restore your battery - automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.

2
NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation
design_servicesDESIGN
miscellaneous_servicesUTILITY
handymanUSABILITY

NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation

by NOCO
What We like

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.

9.7
SCORE
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Product Features

  • Meet the GENIUS5 - Similar to our G3500, just better. It's 34% smaller and delivers 65% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
  • Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawnmowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
  • Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
  • Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.

Restore your battery - automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life. Meet the genius5 - similar to our g3500, just better. it's 34% smaller and delivers 65% more power. it's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator. Beyond maintenance - it's not just a trickle charger, it's an advanced battery maintainer. a fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge. Enjoy precision charging - an integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates. Do more with genius - designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, agm, and maintenance-free, plus lithium-ion batteries. Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawnmowers, atvs, lawn tractors, trucks, suvs, boats, pwcs, classic cars, and more.

3
NOCO Genius G4 6V/12V 4.4 Amp 4-Bank Battery Charger and Maintainer
design_servicesDESIGN
miscellaneous_servicesUTILITY
handymanUSABILITY

NOCO Genius G4 6V/12V 4.4 Amp 4-Bank Battery Charger and Maintainer

by NOCO
What We like

Advanced diagnostics indication for damaged batteries.

9.4
SCORE
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Product Features

  • Works with all types of 6-volt and 12-volt lead-Acid batteries, including wet, gel, and AGM, or any common automotive, deep-cycle, marine, or maintenance-free battery.
  • The most convenient way to charge and maintain multiple vehicles for extending battery life and year-round battery maintenance of your car, boat, truck, RV, lawnmower, or any other vehicle.
  • Completely recharge smaller capacity batteries on motorcycles, atvs, snowmobiles, personal watercraft, scooters, and power wheels up to 40 amp-hours. Ip64 protection
  • One of the most advanced and safest battery chargers, including spark-proof technology, and reverse polarity protection, plus backed by our 5-year and endless Accessories.
  • An optimized charge mode for safely charging and maintaining 12-volt lithium-ion batteries, and recommended with use on lithium batteries with an internal BMS.

An optimized charge mode for safely charging and maintaining 12-volt lithium-ion batteries, and recommended with use on lithium batteries with an internal bms. One of the most advanced and safest battery chargers, including spark-proof technology, and reverse polarity protection, plus backed by our 5-year and endless accessories. Works with all types of 6-volt and 12-volt lead-acid batteries, including wet, gel, and agm, or any common automotive, deep-cycle, marine, or maintenance-free battery. The most convenient way to charge and maintain multiple vehicles for extending battery life and year-round battery maintenance of your car, boat, truck, rv, lawnmower, or any other vehicle. Completely recharge smaller capacity batteries on motorcycles, atvs, snowmobiles, personal watercraft, scooters, and power wheels up to 40 amp-hours. ip64 protection Keep your battery fully charged without worry or overcharge. simply plug-in and let our advanced charging technology automatically monitor and maintain your battery.

4
NOCO Genius GEN2, 2-Bank, 20-Amp (10-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer
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miscellaneous_servicesUTILITY
handymanUSABILITY

NOCO Genius GEN2, 2-Bank, 20-Amp (10-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer

by NOCO
What We like

One of the most advanced battery chargers in its class, which is certified to UL1236, ISO 8846, 33 CFR 183. 410, plus backed by a 5-year.

9.2
SCORE
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Product Features

  • Rugged and waterproof construction capable of submersion down to 3-meters and rated IP68 and NEMA 6P.
  • A 20 amp (10 amp per bank) on-board battery charger for charging and maintaining two 12-volt batteries independently.
  • Safely charge all types of lead-acid batteries from 25-230Ah, including wet, gel, AGM, and deep-cycle batteries.
  • Advanced safety protection featuring spark-proof technology, plus reverse polarity, thermal, ignition, and overcharge protection.

Safely charge all types of lead-acid batteries from 25-230ah, including wet, gel, agm, and deep-cycle batteries. Advanced safety protection featuring spark-proof technology, plus reverse polarity, thermal, ignition, and overcharge protection. Rugged and waterproof construction capable of submersion down to 3-meters and rated ip68 and nema 6p. A 20 amp (10 amp per bank) on-board battery charger for charging and maintaining two 12-volt batteries independently.

5
Guest 2603 Marine Battery Maintainer/Charger (12-Volt, 3-Amps, Single Output)
design_servicesDESIGN
miscellaneous_servicesUTILITY
handymanUSABILITY

Guest 2603 Marine Battery Maintainer/Charger (12-Volt, 3-Amps, Single Output)

by Guest
What We like

GUEST 2603, GUS2603

8.9
SCORE
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6
JAC0348-R 48V, 3A Schauer Battery Charger/Maintainer for 48 Volt Systems up to 40 Amp Hour Battery Capacity, with Ring Terminals
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miscellaneous_servicesUTILITY
handymanUSABILITY

JAC0348-R 48V, 3A Schauer Battery Charger/Maintainer for 48 Volt Systems up to 40 Amp Hour Battery Capacity, with Ring Terminals

by Schauer
What We like

AC Input Voltage/Frequency: 115VAC, 50/60 Hz

8.6
SCORE
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Product Features

  • For any type lead acid battery, including conventional, maintenance free, deep cycle, gelled-type, valve regulated batteries
  • Charge control: modified constant current charge to a constant finishing voltage then to a float standby
  • Fully automatic 3 stage charger can be left on the battery indefinitely
  • Short circuit proof, reverse polarity protection

Fully automatic 3 stage charger can be left on the battery indefinitely Short circuit proof, reverse polarity protection For any type lead acid battery, including conventional, maintenance free, deep cycle, gelled-type, valve regulated batteries Charge control: modified constant current charge to a constant finishing voltage then to a float standby

7
OptiMATE 7 12V/24V, TM-261, 8-step 12V 10A / 24V 5A sealed battery saving charger & maintainer
design_servicesDESIGN
miscellaneous_servicesUTILITY
handymanUSABILITY

OptiMATE 7 12V/24V, TM-261, 8-step 12V 10A / 24V 5A sealed battery saving charger & maintainer

by TecMate
What We like

- Fully sealed case to protect against spillage and light rain.

8.5
SCORE
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Product Features

  • - Ampmatic charge control adjusts charge rate Small battery gets less, large battery gets more!
  • - Connect and forget, no more battery problems. Continuous charging if healthy, stops and warns if faulty.
  • 1 - Saves your 12V and 24V battery (AGM, GEL, STD, Starter, Deep Cycle) when no other charger will work. If OptiMATE can't save it, nothing will.
  • - Recovers sulphated batteries from as low as 0.5V.
  • - Will not charge if selected voltage does not match battery voltage!

- optimate is recommended by honda, yamaha, kawasaki, ktm and husqvarna and global battery manufacturers antigravity, super-b and earth-x. - recovers sulphated batteries from as low as 0.5v. 1 - saves your 12v and 24v battery (agm, gel, std, starter, deep cycle) when no other charger will work. if optimate can't save it, nothing will. - ampmatic charge control adjusts charge rate small battery gets less, large battery gets more! - will not charge if selected voltage does not match battery voltage! - connect and forget, no more battery problems. continuous charging if healthy, stops and warns if faulty. - whether it be motorcycle, car/ pick-up truck, marine craft or rv.

8
OptiMATE 7 SELECT, TM-251, 9-step 12V 10A sealed battery saving charger & maintainer
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miscellaneous_servicesUTILITY
handymanUSABILITY

OptiMATE 7 SELECT, TM-251, 9-step 12V 10A sealed battery saving charger & maintainer

by TecMate
What We like

Saves 'dead flat' sulphated batteries from as low as 0. 5V - The most advanced recovery program! ; OptiMATE's 24-7 smart maintenance s more battery power, longer battery life!

7.5
SCORE
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Product Features

  • Ampmatic charge control adjusts current to match battery size - Small battery gets less, large battery gets more!
  • OptiMATE 7 Select, the 'PRO choice' performance charger that will get the full potential out of your high performance 12V spiral cell / sealed starter or deep cycle high batteries and with steady power option when diagnosing / troubleshooting - The performance vehicle owners choice!
  • Select 14. 4V or 14. 7V to match the specified charge voltage for your 12V battery, then connect to battery and the charger does the rest.
  • "Automatically charge, test and maintain any size 12V AGM, GEL, EFB or STD starter or deep cycle battery in any temperature - Voltage adjusted higher when colder, lower when hotter! "

"automatically charge, test and maintain any size 12v agm, gel, efb or std starter or deep cycle battery in any temperature - voltage adjusted higher when colder, lower when hotter! " Optimate 7 select, the 'pro choice' performance charger that will get the full potential out of your high performance 12v spiral cell / sealed starter or deep cycle high batteries and with steady power option when diagnosing / troubleshooting - the performance vehicle owners choice! Select 14. 4v or 14. 7v to match the specified charge voltage for your 12v battery, then connect to battery and the charger does the rest. Ampmatic charge control adjusts current to match battery size - small battery gets less, large battery gets more!

9
SEACHOICE 14384 Battery Charger and Maintainer, Includes Alligator Clips, CEC Certified, 4-8 Amps, 12-24 Volts, Black, One Size
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miscellaneous_servicesUTILITY
handymanUSABILITY

SEACHOICE 14384 Battery Charger and Maintainer, Includes Alligator Clips, CEC Certified, 4-8 Amps, 12-24 Volts, Black, One Size

by Seachoice
What We like

Direct wall plug-in design reduces clutter

7.5
SCORE
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Product Features

  • Reliably charges a battery and monitors it to safely maintain the charge
  • Spark-resistant reverse hookup protection helps prevent potential battery damage from incorrect use
  • Alligator clips are included
  • Reliable 3-stage smart charger technology prevents overcharging that could damage a battery
  • This 4-8-amp, 12-24-volt equipment is CEC certified

This 4-8-amp, 12-24-volt equipment is cec certified Alligator clips are included Spark-resistant reverse hookup protection helps prevent potential battery damage from incorrect use Reliably charges a battery and monitors it to safely maintain the charge Reliable 3-stage smart charger technology prevents overcharging that could damage a battery Smart automatic switching technology ensures this equipment can remain safely connected to the battery for long periods of time

10
OptiMATE 7 Ampmatic, TM-255, 9-step 12V 10A sealed battery saving charger & maintainer
design_servicesDESIGN
miscellaneous_servicesUTILITY
handymanUSABILITY

OptiMATE 7 Ampmatic, TM-255, 9-step 12V 10A sealed battery saving charger & maintainer

by TecMate
What We like

- Provides 24/7 protection by preventing discharge from connected circuitry and s more battery power.

7.5
SCORE
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Product Features

  • - OptiMATE is recommended by Honda, Yamaha, Kawasaki, KTM and Husqvarna and global battery manufacturers Antigravity, Super-B and Earth-X.
  • - Recovers sulphated batteries from as low as 0. 5V.
  • - Fully sealed case to protect against spillage and light rain.
  • - Connect and forget, no more battery problems. Continuous charging if healthy, stops and warns if faulty.
  • - Ampmatic charge control adjusts charge rate Small battery gets less; large battery gets more!

- recovers sulphated batteries from as low as 0. 5v. - connect and forget, no more battery problems. continuous charging if healthy, stops and warns if faulty. - ampmatic charge control adjusts charge rate small battery gets less; large battery gets more! - optimate is recommended by honda, yamaha, kawasaki, ktm and husqvarna and global battery manufacturers antigravity, super-b and earth-x. - fully sealed case to protect against spillage and light rain. - whether it be motorcycle, car/ pick-up truck, marine craft, or rv. - saves your 12v battery (agm, gel, std, starter, deep cycle) when no other charger will work. if optimate cannot save it, nothing will.

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