Best Onboard Marine Chargers for Lithium Batteries

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 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.

For tournament bass boats with a 36 V trolling bank and a starting battery that need to be full by morning, with the longest warranty in the class.

The heavy hitter for a 36 V trolling motor bank plus a starting battery that gets drained every day.

For a four battery boat that wants a pro grade charger with a charge level monitor and a 5 year warranty, at less than the 36 A model.

For a three battery boat with big deep cycle or lithium trolling batteries that need the fastest Minn Kota charge.

For bigger fishing boats with a 36 V trolling motor bank plus a starting battery, charging all four at 10 A each.

For bass boats with a starting battery and a 24 V trolling motor pair, at 10 A a bank with lithium and AGM modes on each.

For a 36 V trolling motor bank plus a starting battery, at 10 A a bank with lithium support.

A common choice for bass boats with a starting battery and a 24 V trolling motor pair, with lithium support on every bank.

For a small bass boat with a starting battery and a 24 V trolling pair that wants lithium support on a budget. Heavy daily use is better served by 10 A banks.

For a smaller bass boat with a starting battery and a 24 V trolling pair that sees light use; heavy daily use calls for 10 A banks.

For bass boats with a starting battery and a 24 V trolling pair, with ignition protection for gasoline engine bays.