Lead-acid batteries are the oldest car battery type and, as a result, the most common. These batteries have been the workhorse of the automotive industry for decades. The design is fairly simple with a case that c. Increasingly, modern lead-acid batteries do not require any servicing, and some no longer use a flooded liquid acid setup to generate power. Known as dry-cell batteries, they co. Like a gel cell, absorbed glass mat or AGM batteries are a lead-acid dry-cell car battery type that are completely sealed and do not require topping off or any other type of maintenance. Ins. Most automotive lithium-ion batteries are found in the battery packs of fully electric vehicles and hybrid vehicles. These packs are usually found in the lower parts of the vehicle and can. Nickel-metal hydride batteries are another type mostly found in fully electric and hybrid vehicle battery packs. These batteries were the workhorses of vehicles such as the Toyota Prius, For.