The 10 Best Marine Battery Chargers

The Schumacher XCS15 SpeedCharge self-adjusts its charging rate to keep your batteries in peak condition and reduce the risk of damage. It also boasts a 2-amp slow-charge mode that's perfect for juicing up smaller batteries or for simply maintaining larger ones.

Anyone who doesn't want to leave their charger on the boat full-time should consider the Guest 2606A, as it's a portable model that's easy to take along when you go home. Weighing in at just three pounds and only 15 inches tall, it can also be stored without much hassle.

If you have a compact boat, the Noco Genius G3500 UltraSafe may be all you need. It charges 6- and 12-volt batteries, which is perfect for small vessels or for keeping large ones topped off. If you want to resurrect a dead deep cycle battery, though, be prepared to wait.

You might find that the BMK BlueMickey will become your constant companion, as in addition to your boat it can juice up lawnmowers, motorcycles, electric vehicles, and much more. While it can revive dead batteries, it's probably best if you use it as a trickle charger.

The Black+Decker BC2WBD is completely sealed from water, dust, and debris, enabling it to withstand just about any conditions you can throw at it. You can hook it up using either the DC accessory plug, terminal rings, or clamps, making it both versatile and convenient.

The Minn Kota On-Board 330D is a three-bank model that boasts 10 amps per bank, and works well with flooded lead-acid batteries. It is equipped with a microprocessor that's designed to protect your cells, letting you spend more time out on the water.

If years of exposure to saltwater have left your batteries in bad shape, the Noco Genius GENM3 can help bring them back to life. It has an advanced recovery mode that repairs damage, and even deeply discharged and sulfated batteries can benefit from its pulse charging.

The ProMariner 43012 ProSport will not only charge your batteries, but it will continue to monitor their power levels to ensure that they're always fully juiced. It also sports an energy saver mode to make sure that it's not boosting them unnecessarily.

The Guest ChargePro boasts over-current, over-voltage, and over-temperature protection, making it one of the safest options available. It even has various inline fuses to keep your DC wires safe, so that it can provide you with years of faithful service.

Available with anywhere from one to four banks, the Minn Kota Precision is your best bet for convincing a battery to come back to the land of the living. It's able to quickly resuscitate sluggish power cells, even when voltage to the charger is flagging.