10 Best Marine Battery Chargers 2022

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

NOCO Genius GEN5X2 – ⭐ Best Overall Marine Battery Charger

GEN5X2 by NOCO

  • Weight: 5.26 pounds
  • Dimensions: 9.2 x 7.2 x 5.4 inches
  • Warranty: 3-Year Limited
NOCO Genius GEN5X2
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • What's in the box - GEN5X2 10-amp 2-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch (182cm) DC cables with 3/8-inch (M10) eyelets and a 72-inch (182cm) Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
  • 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.
  • Fit type: Universal Fit

NOCO Genius GEN5X3

GEN5X3 by NOCO

  • Weight: 6.09 pounds
  • Dimensions: 10.1 x 8.9 x 5.6 inches
  • Warranty: 3-Year Limited
NOCO Genius GEN5X3
  • Meet the all-new GEN5X3 - Similar to our GENM3, only better. It's 37% smaller and delivers 43% more power. It's one of the best performing onboard marine battery chargers we have ever made.
  • Multiple banks - A three-bank onboard battery charger rated a 15-amps - 5-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • 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.
  • 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.
  • 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.
  • 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.
  • What's in the box - GEN5X3 15-amp 3-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch (182cm) DC cables with 3/8-inch (M10) eyelets and a 72-inch (182cm) Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
  • Fit type: Universal Fit

Guest On-Board Battery Charger 8A / 12V; 2 Bank; 120V

2707A by Guest

  • Dimensions: 7.5 x 2.4 x 9 inches
Guest On-Board Battery Charger 8A / 12V; 2 Bank; 120V
  • 12v 8 amp 2 bank on-board battery charger
  • built-in safety: reverse polarity, over-current, over-voltage, over-temperature and ignition protection. in-line fuses for maximum dc wire protection.
  • 100% waterproof (ip67) and shock resistant for all fresh and saltwater applications
  • dedicated battery charging, sensing and control per bank
  • for all 12 volt flooded and agm lead acid batteries. 2 year warranty
  • Fit type: Universal Fit

NOCO Genius GENPRO10X3

GENPRO10X3 by NOCO

  • Weight: 13.43 pounds
  • Dimensions: 12.9 x 10.7 x 6.1 inches
  • Warranty: 3-Year Limited
NOCO Genius GENPRO10X3
  • Multiple banks - A three-bank onboard battery charger rated a 30-amps - 10-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • 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.
  • 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.
  • 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.
  • 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.
  • What's in the box - GENPRO10X3 30-amp 3-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch (182cm) DC cables with 3/8-inch (M10) eyelets and a 72-inch (182cm) Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
  • Meet the all-new GENPRO10X3 - Similar to our GEN3, only better. It's 27% smaller and delivers 33% more power. It's one of the best performing onboard marine battery chargers we have ever made.
  • Fit type: Universal Fit

ProMariner 43012 ProSport 12 12 Amp

43012 by ProMariner

  • Release date: 01/24/2019
  • Color: Beige
  • Weight: 5.9 pounds
  • Dimensions: 7.3 x 2.8 x 9.9 inches
ProMariner 43012 ProSport 12 12 Amp
  • 2 Year Warranty
  • Energy Saver Mode
  • Storage Recondition Mode
  • Built-in Quality and Safety
  • Distributed-On-Demand Technology

NOCO Genius GEN5X1 – 💲 Best Budget Marine Battery Charger

GEN5X1 by NOCO

  • Dimensions: 7.2 x 5.2 x 5.2 inches
  • Warranty: 3-Year Limited
NOCO Genius GEN5X1
  • Multiple banks - A one-bank onboard battery charger rated a 5-amps - 5-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • 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.
  • 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.
  • 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.
  • 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.
  • What's in the box - GEN5X1 5-amp 1-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch (182cm) DC cables with 3/8-inch (M10) eyelets and a 72-inch (182cm) Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
  • Meet the all-new GEN5X1 - Similar to our GENM1, only better. It's 51% smaller and delivers 43% more power. It's one of the best performing onboard marine battery chargers we have ever made.
  • Fit type: Universal Fit

ProMariner 43021 Battery Charger Prosport 20 Amp

43021 by ProMariner

  • Release date: 01/24/2019
  • Color: black/yellow
  • Weight: 8 pounds
  • Dimensions: 14.5 x 6 x 8.5 inches
ProMariner 43021 Battery Charger Prosport 20 Amp
  • 2 Year Warranty
  • Built-in Quality and Safety
  • Energy Saver Mode
  • Digital Multi-Stage Performance Charging

Schumacher SC1280 15 Amp 3 Amp 6V/12V Fully Automatic Smart

SC1280 by Schumacher

  • Release date: 06/11/2018
  • Dimensions: 10 x 4.3 x 10 inches
Schumacher SC1280 15 Amp 3 Amp 6V/12V Fully Automatic Smart
  • Features 15A to charge and 3A to maintain your battery
  • Auto voltage detection automatically detects 6 or 12V batteries
  • Automatically selects charge rate for charging and maintaining
  • Reverse hook-up protection ensures charger will not operate if clamps are reversed
  • Charges compatible battery types, including standard, AGM, gel and deep-cycle batteries

NOCO Genius GENPRO10X4 – 👑 Premium Pick

GENPRO10X4 by NOCO

  • Weight: 16.98 pounds
  • Dimensions: 13.8 x 11.7 x 6.1 inches
  • Warranty: 3-Year Limited
NOCO Genius GENPRO10X4
  • Multiple banks - A four-bank onboard battery charger rated a 40-amps - 10-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • 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.
  • 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.
  • 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.
  • 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.
  • What's in the box - GENPRO10X4 40-amp 4-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch (182cm) DC cables with 3/8-inch (M10) eyelets and a 72-inch (182cm) Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
  • Meet the all-new GENPRO10X4 - Similar to our GEN4, only better. It's 10% smaller and delivers 33% more power. It's one of the best performing onboard marine battery chargers we have ever made.
  • Fit type: Universal Fit

NOCO GENIUS1

GENIUS1 by NOCO

  • Release date: 11/08/2019
  • Color: Multi
  • Weight: 0.95 pounds
  • Dimensions: 3.4 x 4 x 6.7 inches
  • Warranty: 3 year limited
NOCO GENIUS1
  • Meet the GENIUS1 - Similar to our G750, just better. It's 35% smaller and delivers 35% 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.
  • 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.
  • 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 - 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.
  • Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.

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