10 Best Marine Battery Chargers 2024
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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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.
