Best On Board Battery Charger For Boats In May 2025

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Looking for some of the Best On Board Battery Charger For Boats? As you may know, there are dozens of similar products out there and some come with vastly different price tags. Let us help you out here – we have handpicked for you the Best On Board Battery Charger For Boats.

To help you in your search, we have completed this list of the Best On Board Battery Charger For Boats.

Top Rated Best On Board Battery Charger For Boats Of 2025

Rank	Product Name	Score
1	NOCO Genius GENM2 8 Amp 2-Bank On-Board Battery Charger Buy Now	9.7 Buy Now
2	MinnKota MK 315D On-Board Battery Charger (3 Banks, 5 Amps per Bank) Buy Now	9.5 Buy Now
3	Guest 2711A ChargePro On-Board Battery Charger 10A / 12V, 2 Bank, 120V Input Buy Now	9.1 Buy Now
4	Boating Accessories New MINN KOTA Marine Batt CHARGER-MK210D 2 Bank 5A MIN 1822105 Buy Now	8.8 Buy Now
5	ProMariner Prosport 6 Battery Charger, 6 Amp, 12V, Beige (SS-SMS-430068) Buy Now	8.6 Buy Now
6	ProMariner ProSport 12 Gen 3 Heavy Duty Recreational Series On-Board Marine Battery Charger Buy Now	8.3 Buy Now
7	ProMariner 43008 Battery Charger Prosport 8 Amp Buy Now	8.1 Buy Now
8	Marinco ChargePro 6-Amp 1 Bank 12V Waterproof Battery Charger Buy Now	7.8 Buy Now
9	Marinco 28210 10A 2-Bank On-Board Battery Charger - 12/24V Electronics Accessories Buy Now	7.5 Buy Now
10	ProMariner ProSport 12 Gen 3 Heavy Duty Recreational Series On-Board Marine Battery Charger Buy Now	7.2 Buy Now

1. NOCO Genius GENM2 8 Amp 2-Bank On-Board Battery Charger

• 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.
• 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.
• Advanced safety protection featuring spark-proof technology, plus reverse polarity, thermal, ignition, and overcharge protection.
• Built-in battery desulfator to recover worn-out batteries.

2. MinnKota MK 315D On-Board Battery Charger (3 Banks, 5 Amps per Bank)

• Three-year warranty
• 3 banks, 5 amps per bank
• Saltwater tested and fully corrosion-resistant
• Digitally controlled microprocessor design protects your batteries so you can stay on the water longer
• Multi-stage charging and automatic temperature compensation

3. Guest 2711A ChargePro On-Board Battery Charger 10A / 12V, 2 Bank, 120V Input

• For all 12 volt flooded and agm lead acid batteries. 2 year warranty
• 100% waterproof (ip67) and shock resistant for all fresh and saltwater applications
• 12v 10 amp 2 bank 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.
• Dedicated battery charging, sensing and control per bank

4. Boating Accessories New MINN KOTA Marine Batt CHARGER-MK210D 2 Bank 5A MIN 1822105

• Part number: 1822105
• Saltwater tested and fully corrosion-resistant
• Oem equivalent part number: 702089
• 2 banks, 5 amps per bank
• Fit type: universal fit
• Digitally controlled microprocessor design protects your batteries so you can stay on the water longer

5. ProMariner Prosport 6 Battery Charger, 6 Amp, 12V, Beige (SS-SMS-430068)

• Included components: owner's manual

6. ProMariner ProSport 12 Gen 3 Heavy Duty Recreational Series On-Board Marine Battery Charger

• Prosport is 100% waterproof and shockproof, weighing 40% lighter than older technology epoxy filled chargers providing cooler operation and greater reliability. each prosport model has 4 digitally selectable charge profiles including a once-a-month storage reconditioning mode for extending battery life.
• Fully charge and extend the life of your batteries. automatically charges, conditions and safely maintains all batteries on board for maximum time on the water.
• Increased power & performance...heavy duty recreational series on-board marine battery charger. compact and rugged extruded aluminum design, dual in-line dc safety fuses for trolling motor and house battery banks. built-in over-voltage, overload, over-temperature, reverse polarity and ignition protection.
• Advanced technology eliminates time consuming troubleshooting by clearly indicating system and battery connections are ok or if a fault is present on a specific battery bank.
• Prosport incorporates distributed-on-demand charging technology, taking 100% of the available charging amps and distributing them to any one or combination of all batteries as needed for faster charging.

7. ProMariner 43008 Battery Charger Prosport 8 Amp

• Energy saver mode: after fully charging and conditioning batteries, pros port's energy saver mode will monitor and auto maintain batteries only when needed, maintaining a full state of charge. this significantly reduces ac power consumption, lowers operating costs and maximizes reserve power performance.
• Primary digital technology: microprocessor and software controlled pulse charging technology delivering a 40 percent lighter design than the previous generation of epoxy filled chargers, cooler charger operation and faster charging
• System ok and battery bank trouble status indicators: advanced technology eliminates time consuming troubleshooting by clearly indicating system and battery connections are ok or if a fault is present on a specific battery bank
• Storage recondition mode: during short or long-term storage, pros port automatically reconditions all batteries on board once a month for maximum battery life and performance
• Digital multi-stage performance charging: fully charge and extend the life of your batteries - automatically charges, conditions and safely maintains all batteries on board for maximum time on the water

8. Marinco ChargePro 6-Amp 1 Bank 12V Waterproof Battery Charger

• Microprocessor controlled for accurate charging
• Sense-send technology senses the power needs of each battery and sends correct charge
• Universal input 120/230v input for go-anywhere freedom
• Intuitive operation
• Charge flooded, agm or gel batteries
• Replaces guest 2608a

9. Marinco 28210 10A 2-Bank On-Board Battery Charger - 12/24V Electronics Accessories

• 15-years as premier solution provider
• Complimentary white glove service - just-ask-we-take-care-of-it
• Best value and performance in its class
• Same day shipping on request
• New

10. ProMariner ProSport 12 Gen 3 Heavy Duty Recreational Series On-Board Marine Battery Charger