The Lead-acid battery is one of the oldest types of rechargeable batteries. Lead acid batteries are cheap, convenient and they work for many battery power applications. They are probably best known for their use in conventional internal combustion automotive vehicles where they supply the power for everything from starting, to the electronics and much more.

The lead acid battery has many advantages for automotive and many other uses: they have a large current and surge capability, which is ideal when being used to start internal combustion engines.