Under $150 buys a sealed, waterproof onboard charger with one to three banks, enough for a small boat with a starting battery and a trolling or house battery. Output is modest, so recharge times are longer than with larger models.
Check the charge profiles for the chemistry you run, especially lithium and AGM, since not every unit supports them. Confirm the output per bank, the voltage you need and whether it is ignition protected if it will sit near the engine. Plan for a proper fuse, correctly sized wire and a dry mounting spot even though the case is rated for marine use.
Prices were last checked November 11, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Best Onboard Marine Chargers Under $150: 1 and 2 bank
- NOCO Genius GENPRO10X1#1 of 8Full review
For one deep cycle or lithium battery that needs a real overnight recharge, such as a 12 V trolling motor on a small boat.
Amazon $116.50$116.50110 AYes - NOCO Genius GEN5X2#2 of 8Full review
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.
Amazon $139.95$139.95210 AYes - Minn Kota MK-110PCL#3 of 8Full review
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.
Amazon $125.33$125.33110 AYes - NOCO Genius GEN5X1#4 of 8Full review
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.
Amazon $79.95$79.9515 AYes - Minn Kota MK-106PCL#5 of 8Full review
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.
Amazon $110.99$110.9916 AYes - ProMariner ProSport HD 6#6 of 8Full review
For one starting or small trolling battery in a boat with a gasoline engine compartment, where ignition protection matters.
Amazon $135.99$135.9916 AYes - Guest ChargePro 2711A#7 of 8Full review
An affordable two bank charger for lead acid batteries on a small fishing boat. Lithium owners should look elsewhere.
Amazon $149.67$149.67210 ANo - Guest ChargePro 2707A#8 of 8Full review
For a small boat with a starting battery and a small lead acid trolling battery, on a tight budget.
Amazon $121.84$121.8428 ANo
