Alternator Battery Charger, 20 Amps 

Alternator charging design uses current from boat's alternator to re-charge trolling batteries when main engine is running. Charge-on-the-fly circuitry puts additional juice back in your trolling batteries on runs between fishing spots - turns off when the engine stops.

• LED indicators display power-on, charging and check connection
• Waterproof, shock and vibration-resistant design
• Advanced corrosion protection to withstand the effects of saltwater
• For use with 12 volt systems with 12V/6-cell batteries that are flooded/wet cell, maintenance free or starved electrolyte (AGM)
• Includes one 6' fused input cable and two 6' fused output cables
• 3 Year warranty

Model: MK-2-DC, Banks: 2, Amps per Bank: 10, Total Amps: 20