12V 4-Bank 40A Marine Battery Charger - 10A Per Bank

The Dakota Lithium 12V 4-Bank 40A Onboard Marine Battery Charger is built for boats and other systems running multiple 12V batteries. Instead of moving a charger from battery to battery, four independent banks let you plug in once and charge up to four batteries at the same time.

Each bank delivers 10A and includes its own battery-type selector for compatible 12V LiFePO₄, AGM, or flooded lead-acid batteries. That makes it especially useful for boats with a mix of trolling-motor, starting, and electronics batteries that each need their own dedicated charging bank.

IP67 epoxy-potted construction, an aluminum housing, and active cooling are designed for demanding onboard marine environments. A manual activation function can also help wake compatible LiFePO₄ batteries that have entered low-voltage cutoff.

Backed by Dakota Lithium support and a 1-year limited warranty.

• FOUR INDEPENDENT CHARGING BANKS – Charge up to four 12V batteries simultaneously.
• 10A PER BANK / 40A TOTAL OUTPUT – Dedicated charging power for each connected battery.
• SELECTABLE BATTERY TYPE PER BANK – Choose 12V LiFePO₄, AGM, or flooded lead-acid charging mode independently for each bank.
• IP67 EPOXY-POTTED CONSTRUCTION – Built for demanding onboard marine environments.
• LOW-VOLTAGE LITHIUM WAKE-UP – Hold the activation button for 3–5 seconds to help wake compatible LiFePO₄ batteries in low-voltage cutoff.
• LED POWER + CHARGING STATUS – Provides quick visual feedback during charging.
• BUILT-IN CHARGING PROTECTION – Reverse-polarity, overcharge, and short-circuit protection.
• ALUMINUM HOUSING + ACTIVE COOLING – Aluminum construction with a waterproof cooling fan for heat dissipation.