Best 1 and 2 Bank Onboard Marine Chargers Ranked

For a two battery boat with large deep cycle or lithium batteries that need a fast overnight charge.

For a boat with a starting battery and a 12 V trolling or house battery that gets drained hard, with lithium support on both banks.

For one deep cycle or lithium battery that needs a real overnight recharge, such as a 12 V trolling motor on a small boat.

For a boat with a starting battery and a 12 V trolling or house battery, at a useful 10 A a bank and with lithium support.

A low cost two bank charger for a skiff or jon boat with a starting battery and one trolling or house battery, including lithium. Its 5 A banks suit modest batteries best.

For a boat with a starting battery and a big 12 V trolling or house battery, where shared current gets the drained battery full fastest.

A lithium ready single bank charger for one 12 V trolling motor or house battery on a small boat, with enough current for an overnight refill.

A cheap way to keep a single starting or trolling battery topped up aboard a small boat. Buy a bigger charger for a deep cycle bank you drain every trip.

For a small boat with a starting battery and a 12 V trolling battery of modest size, with lithium support on both banks.

For a two battery boat on lead acid batteries that wants 10 A a bank for little money. It has no lithium mode.

For a single starting or small trolling battery, lead acid or lithium, on a small boat. Pick the 10 A version for a big deep cycle battery.

For a two battery boat that wants ignition protection and smarter current sharing than a fixed split charger.

For a small boat with a starting battery and a modest trolling battery, from a maker whose chargers are built for engine compartments.

For one starting or small trolling battery in a boat with a gasoline engine compartment, where ignition protection matters.

An affordable two bank charger for lead acid batteries on a small fishing boat. Lithium owners should look elsewhere.

For a small boat with a starting battery and a small lead acid trolling battery, on a tight budget.