Top 10 12V battery Maintainers for January 2021

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1
9.6
SCORE
NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation
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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.

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Product Features

  • 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.
  • 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.
  • Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawnmowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
  • 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.

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. 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. Restore your battery - automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life. 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. 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.

2
9.5
SCORE
NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation
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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.

more infoarrow_drop_down

Product Features

  • 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.

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. 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. 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. Restore your battery - automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life. 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.

3
9.1
SCORE
NOCO Genius GENM2, 2-Bank, 8-Amp (4-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer
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NOCO Genius GENM2

2-Bank, 8-Amp (4-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer

by NOCO
What We like

Saltwater-tested to combat corrosion.

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Product Features

  • 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.
  • An 8 amp (4 amp per bank) on-board battery charger for charging and maintaining two 12-volt batteries independently.
  • Built-in battery desulfator to recover worn-out batteries.
  • Safely charge all types of lead-Acid batteries from 20-120ah, including wet, gel, AGM, and deep-cycle batteries.
  • Advanced safety protection featuring spark-proof technology, plus reverse polarity, thermal, ignition, and overcharge protection.

Built-in battery desulfator to recover worn-out 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 20-120ah, including wet, gel, agm, and deep-cycle batteries. Rugged and waterproof construction capable of submersion down to 3-meters and rated ip68 and nema 6p. An 8 amp (4 amp per bank) on-board battery charger for charging and maintaining two 12-volt batteries independently. 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.

4
9.1
SCORE
NOCO Genius G4 6V/12V 4.4 Amp 4-Bank Battery Charger and Maintainer
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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.

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Product Features

  • 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.
  • 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.
  • Keep your battery fully charged without worry or overcharge. Simply plug-in and let our advanced charging technology automatically monitor and maintain your battery.
  • 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.

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. Completely recharge smaller capacity batteries on motorcycles, atvs, snowmobiles, personal watercraft, scooters, and power wheels up to 40 amp-hours. ip64 protection 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. 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. Keep your battery fully charged without worry or overcharge. simply plug-in and let our advanced charging technology automatically monitor and maintain your battery. 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.

5
8.8
SCORE
NOCO Genius GEN1, 1-Bank, 10-Amp (10-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer
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NOCO Genius GEN1

1-Bank, 10-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.

more infoarrow_drop_down

Product Features

  • 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.
  • Rugged and waterproof construction capable of submersion down to 3-meters and rated ip68 and NEMA 6p.
  • A 10 amp (10 amp per bank) on-board battery charger for charging and maintaining one 12-volt battery.

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

6
8.7
SCORE
NOCO Genius GENM1, 1-Bank, 4-Amp (4-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer
design_servicesDESIGN
miscellaneous_servicesUTILITY
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NOCO Genius GENM1

1-Bank, 4-Amp (4-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 .

more infoarrow_drop_down

Product Features

  • Safely charge all types of lead-acid batteries from 20-120Ah, 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 4 amp (4 amp per bank) on-board battery charger for charging and maintaining one 12-volt battery.

Safely charge all types of lead-acid batteries from 20-120ah, including wet, gel, agm, and deep-cycle batteries. Rugged and waterproof construction capable of submersion down to 3-meters and rated ip68 and nema 6p. A 4 amp (4 amp per bank) on-board battery charger for charging and maintaining one 12-volt battery. Advanced safety protection featuring spark-proof technology, plus reverse polarity, thermal, ignition, and overcharge protection.

7
8.6
SCORE
NOCO Genius GEN5X2, 2-Bank, 10-Amp (5-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger, Battery Maintainer and Battery Desulfator with Temperature Compensation
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NOCO Genius GEN5X2

2-Bank, 10-Amp (5-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger, Battery Maintainer and Battery Desulfator with Temperature Compensation

by NOCO
What We like

Redefined mounting - A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.

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Product Features

  • Charging modes - Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid and lithium-ion batteries.
  • Designed for water - A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.
  • Fit type: Universal Fit
  • 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.
  • Meet the all-new GEN5X2 - Similar to our GENM2, only better. It's 27% smaller and delivers 43% more power. It's one of the best performing onboard marine battery chargers we have ever made.

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. Charging modes - independently charge and control each battery bank with selectable charging modes - including 12v, 12v agm, 12v lithium, and 12v repair mode - for all types of lead-acid and lithium-ion batteries. 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. Fit type: universal fit Meet the all-new gen5x2 - similar to our genm2, only better. it's 27% smaller and delivers 43% more power. it's one of the best performing onboard marine battery chargers we have ever made. Multiple banks - a two-bank onboard battery charger rated a 10-amps - 5-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries. Designed for water - a fully-sealed and waterproof onboard battery charger with an ingress protection rating of ip68, but has survived brutal life cycle testing, including thousands of hours underwater.

8
8.1
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OptiMATE 7 12V/24V, TM-261, 8-step 12V 10A / 24V 5A sealed battery saving charger & maintainer
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Tecmate 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.

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Product Features

  • - Will not charge if selected voltage does not match battery voltage!
  • 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.
  • - 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.
  • - Recovers sulphated batteries from as low as 0.5V.

- optimate is recommended by honda, yamaha, kawasaki, ktm and husqvarna and global battery manufacturers antigravity, super-b and earth-x. - will not charge if selected voltage does not match battery voltage! - recovers sulphated batteries from as low as 0.5v. - ampmatic charge control adjusts charge rate small battery gets less, large battery gets more! 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. - 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.

9
8.1
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OptiMATE 7 Ampmatic, TM-255, 9-step 12V 10A sealed battery saving charger & maintainer
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Tecmate 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.

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Product Features

  • - Saves your 12V battery (AGM, GEL, STD, Starter, Deep Cycle) when no other charger will work. If OptiMATE cannot save it, nothing will.
  • - OptiMATE is recommended by Honda, Yamaha, Kawasaki, KTM and Husqvarna and global battery manufacturers Antigravity, Super-B and Earth-X.
  • - Connect and forget, no more battery problems. Continuous charging if healthy, stops and warns if faulty.
  • - Recovers sulphated batteries from as low as 0. 5V.
  • - Fully sealed case to protect against spillage and light rain.

- ampmatic charge control adjusts charge rate small battery gets less; large battery gets more! - 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. - whether it be motorcycle, car/ pick-up truck, marine craft, or rv. - optimate is recommended by honda, yamaha, kawasaki, ktm and husqvarna and global battery manufacturers antigravity, super-b and earth-x. - saves your 12v battery (agm, gel, std, starter, deep cycle) when no other charger will work. if optimate cannot save it, nothing will.

10
8.1
SCORE
OptiMATE 7 SELECT, TM-251, 9-step 12V 10A sealed battery saving charger & maintainer
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Tecmate 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!

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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! Ampmatic charge control adjusts current to match battery size - small battery gets less, large battery gets more! 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.

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