Your Hummer H3 battery is the heart of the entire electrical system, and a tired battery puts everything from starting reliability to sensitive electronics at risk. Upgrading to a quality lithium battery sheds serious weight, improves cranking power, and lasts longer than conventional lead-acid units. Here at Andy's Auto Sport we carry a complete selection of Hummer H3 batteries plus the chargers and jump starters to keep them at full strength, so you are sure to find the perfect unit for your application in our extensive lineup.

Modern lithium starter batteries can weigh up to 70 percent less than the lead-acid battery they replace, while cranking harder and holding a charge far longer in storage. That is why racers have been among the first to make the switch: swapping the battery is one of the cheapest ways to remove real weight from a Hummer H3.