Large batteries are usually of the rechargeable lead-acid type. Applications include ''starting batteries'' for [[automobile]]s and ''deep cycle batteries'' for leisure use.<ref>http://aboutbatteries.batterycouncil.org/What-is-a-lead-battery</ref> Starting batteries are usually 12 volt batteries containing six lead-acid cells. Large vehicles, such as [[truck]]s and [[bus]]es may have two 12 volt batteries connected in series to give 24 volts. | Large batteries are usually of the rechargeable lead-acid type. Applications include ''starting batteries'' for [[automobile]]s and ''deep cycle batteries'' for leisure use.<ref>http://aboutbatteries.batterycouncil.org/What-is-a-lead-battery</ref> Starting batteries are usually 12 volt batteries containing six lead-acid cells. Large vehicles, such as [[truck]]s and [[bus]]es may have two 12 volt batteries connected in series to give 24 volts. |