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3 Bank Marine Battery Charger 5X3, 15A (5A/Bank) - 12V Boat Charger

  • Based on 62 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Aug 27
Order within 6 hours and 36 minutes
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Features

  • 5X3, 3-Bank, 5A Per Bank: 3 Bank battery charger for boat 12V for all types of lead-acid & lithium-ion 12V batteries - including marine, boat, starter & deep-cycle batteries. IP68 waterproof fully-sealed charging. Boat charger can be charged 24/7 onboard.
  • 3 Charging Modes: 12V SLA/AGM (Lead-Acid), 12V LITHIUM(Marine lithium battery charger), 12V CALCIUM. 3 Batteries can charge at the same time. Each battery can independently select the suitable mode via press "MODE".
  • Force Mode: 3 Bank battery charger charge dead batteries. When battery is lower than 1V, you can manually begin charging: Only press and hold the MODE button for 5s.
  • Auto Repair Mode & Advanced Diagnostics: You don't need to operate boat battery chargers.12V Repairlight is on, automatically start repair. Advanced Diagnostics: Over Voltage, Bad Battery, Over Temperature, Reverse Connection. Help you find problems quickly.
  • 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.
  • Segmented Smart Charging: Protects the battery by adjusting current in stages, with different currents at different times (SLA/AGM: 9-stage; Lithium: 6-stage; Calcium: 9-stage).
  • 3-YEAR WARRANTY FOR CHARGER: 5-Grid Power Display - 20%, 40%, 60%, 80%, 100%. Whats in the box : 1* On board battery charger for boat; 3* Battery clips; 3* Battery connectors; 3* Spare fuses; 4* Screws; 1* Bag, 1* Manual. WARNING: USE IN WELL VENTILATED AREA!

Description

15A (5A/Bank) Waterproof FOR 12V SLA/AGM, Lithium (LiFePO4), CALCIUM & Deep-Cycle Batteries. 1.FirstPower Pro is a brand specializing in the production of marine chargers. 2.FirstPower Pro is top-notch in terms of compatibility, quality, materials, certification, and after-sales service! 3.FirstPower Pro all products aretested by manufacturers to match OEM products, and exported to all over the world. Can this charger charge 3 batteries simultaneously? Can it charge for 24V and 36V battery? Yes, it can. 3 batteries can be charged simultaneously using this charger. However, please note that this charger is specifically designed for 12V battery only and is not compatible with 24V or 36V. Can this charger simultaneously charge multiple battery types? Example:Bank 1: AGM; Bank 2: Lithium; Bank 3: Calcium. Yes, it can. Each battery can independently select the suitable mode by pressing the "MODE" button. Example: Bank 1: AGM, you can choose "12V SLA/AGM"; Bank 2: Lithium, choose "12V LITHIUM"; Bank 3: Calcium, choose "12V CALCIUM". Can this charger be plugged in 24/7 while storing the boat or being on a dock? Yes, it can. When voltage of battery being charged drops, charger will automatically replenish the charge. When battery reaches its full charge, charger will automatically enter battery maintnance program to ensure optimal performance & longevity. Why does the charger get hot when charging 3 batteries at the same time? Is it safe? It is safe. When the charger temperature is high, output current will automatically decrease; or Over-temperature indicator will blink and charging will stop. When the charger cools down, it will charge automatically without manual operation. Would I just hook up the 3 bank independently to charge the 3 batteries? Yes, you can hook up the 3 bank independently to charge the 3 batteries. It is easy to install. Please refer to the instruction manual

Brand: FirstPower Pro


Product Dimensions: 1.97"D x 9.45"W x 7.68"H


Output Voltage: 12 volts


Input Voltage: 120 volts


Current Rating: 5 A


Output Voltage: 12 volts


Input Voltage: 120 volts


Current Rating: 5 A


Amperage: 5 A


Compatible Devices: 12V SLA/AGM, 12V LITHIUM, 12V CALCIUM batteries


Connector Type Used on Cable: Battery Clip and Connector


Number of Ports: 3


Item Dimensions D x W x H: 1.97"D x 9.45"W x 7.68"H


EU Spare Part Availability Duration: 3 years


Brand: FirstPower Pro


Number of Items: 1


Manufacturer: FirstPower Pro


Number of Packs: 3


Model Number: ICM5A-3


Warranty Description: 3 year warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Great charger at a good price
After my onboard charger quit a couple days before going to Canada for a fishing trip I needed a charger quick and found this one, I installed it vertically to fit in the spot of the old one and was pleasantly surprised that it seemed well made and I liked that it had the different charging options for lead acid, agm, and lithium batteries as my next batteries will probably be lithium. So far the charger has preformed well and im glad I chose this charger. If your looking to replace an old charger or buying new I would recommend this unit. ... show more
Reviewed in the United States on June 24, 2026 by john brown

  • WORKS AS ADVERTISED.
VERY IMPRESSED. ALL THE RIGHT/CORRECT HOOKUPS. INSTALLATION WAS A BREEZE. IF IT LASTS A YEAR OR SO IT WILL BE WORTH IT. VERY GOOD FOR THE MONEY.
Reviewed in the United States on June 17, 2026 by SPOON

  • Easy to use
Works really good. Plus in when return to the dock, leave plugged in while boat not being used.
Reviewed in the United States on June 16, 2026 by Dan H.

  • Ez to put in
It all good
Reviewed in the United States on April 1, 2026 by Phillip Crawford

  • Well built
Easy install, and plug in. Simple clean charger
Reviewed in the United States on August 7, 2026 by Jim Gwilt

  • Save Money . Buy this!
Perfect performance with my two lithium batteries and calcium starting battery . Love it.
Reviewed in the United States on June 8, 2026 by Harlan Fels

  • Durable charger for boat batteries.
I just installed this on my boat. It is very well built and am looking forward to see how it performs charging my batteries. I like the fact it has inline fuses for added protection. The 110 cord is plenty long to plug into an extension cord or outlet.
Reviewed in the United States on April 27, 2026 by Tim

  • So far, so good
Works well, doesn’t even get warm when charging. Nice size, straightforward. Too early to say much about durability bc just installed but pleased for the price so far.
Reviewed in the United States on March 16, 2026 by Thomas D.

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