we’ve put together a collection of the best Marine Battery Chargers that are currently available on the market. To help you find the perfect Marine Battery Charger among a wide variety of options, we constantly update our collection with new and trending models.

10 Best Marine Battery Chargers

Based on dozens of customer reviews and ratings, the followings are the top 10 best-selling Marine Battery Chargers:

Top Rated Marine Battery Charger Reviews

Since we’ve mentioned 10 different models of Marine Battery Chargers on the above list, it may be difficult for you to find the right one for your needs. This is why we listed the key features of each of these Marine Battery Chargers below:

1

Product Highlights:

  • Meet the GENPRO10X2 – Similar to our GEN2, only better. It’s 19% smaller and delivers 33% 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 20-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 – GENPRO10X2 20-amp 2-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
Sale2

Product Highlights:

  • ProSport HD 20A Triple Bank Waterproof Marine Battery Charger (Part Number 44021) replaces the old ProMariner Gen 3 ProSport 20 plus (part number 43021)
  • ProMar Digital Technology: Microprocessor and software controlled charging technology for fast, precise charging
  • Distributed-On-Demand Technology: 100% of all available charging amps are utilized by distributing unused charging amps to any one or combination of all batteries as needed
  • Heavy Duty Tri-Surface Extruded Heat Sink Design: Upper, lower and rear facing heat sink design for optimal cooling while delivering true rated constant current charging amps during its two charge mode
  • Expanded LED Display with Completion Status Gauge: LED fuel gauge style completion status. Four color multi-stage mode LED status bar. Multi-stage Charge Mode, System Check OK, individual Battery Status and Battery Type indication
Sale3

Product Highlights:

  • Meet the 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.
  • 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 DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
Sale4

Product Highlights:

  • RELIABLE POWER: Delivers 15 Amp rapid charge and 3 Amp maintain to automotive and marine batteries; compatible with standard, AGM, gel, and deep-cycle batteries
  • SMART CHARGING: Microprocessor-controlled automatic amperage rate adjustment and multi-stage charging for added precision, safety, and battery life
  • DIGITAL DISPLAY: LED display, indicator lights, and simple button controls for ease of use
  • VOLTAGE DETECTION: Automatically detects 6V or 12V batteries
  • SAFE AND RELIABLE: Reverse hook-up protection prevents the charger from operating if the clamps are reversed
5

Product Highlights:

  • Meet the 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 DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
Sale6

Product Highlights:

  • Meet the GEN5X2 – Similar to our GENM2, 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 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 DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
Sale7

Product Highlights:

  • Meet the 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.
  • 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 DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
Sale8

Product Highlights:

  • 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
9

Product Highlights:

  • Meet the GEN5X1 – Similar to our GENM1, 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 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 DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.
10

Product Highlights:

  • Promar Digital performance charging System
  • Charges three banks
  • 40 amp charge capacity
  • 12 Volt DC output
  • Up to 12 performance & precision 4-stage charging profiles: Charge, Condition, Maintain and Re-condition; Automatic dockside power mode for 12 Volt DC lighting and appliances; Factory set for Flooded (Lead Acid) batteries; AGM, GEL selectable
  • Auto-ranging (100-250VAC/50-60Hz) global AC input with reduced harmonic distortion allowing all models to operate off a household power outlet connection; ProNauticP consumes less power so more AC power is available on board
  • Automatically programs conditioning time based on discharge state of batteries; Automatically de-sulfates batteries after 21 days in the maintain mode, improving reserve power performance & extending battery life
  • Real time indication of wiring faults or adverse conditions that may impact the operation of a boat’s charging system
  • After 72 hours of not seeing a load greater than 5 amps, float voltage will be lowered consuming less energy during storage periods (for flooded & sealed charge profiles)

Video Overview

Marine Battery Wiring and install + Onboard Battery charger & fuze/breaker.

This is a complete tutorial on not only what you need to install onboard battery chargers, breakers and wiring, but what type of batteries to get. Camera …

Final Words

So, these are all of the Best Marine Battery Chargers available on the market. We hope this collection was helpful to find the right Marine Battery Charger for the money. However, we recommend checking out the features, benefits, and problems of each of these Marine Battery Chargers before taking your decision.