A DC-to-DC charger uses excess engine-alternator current, typically redirected from the starting battery bank, to charge the house battery bank. This can also be performed by an automatic charging ...
Here's your DIY walk-thru guide for tackling boat battery and charger installation. Andy Kratochvil of Fish Lectronic installs a Minn Kota Precision Charger for a new 36 volt trolling motor battery ...