The lead acid battery was invented in 1859 by French physicist Gaston Planté and is the earliest type of rechargeable battery. 

Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, its ability to supply high surge currents means that the cells have a relatively large power-to-weight ratio.

Nominal cell voltage: 2.1 VCharge/discharge efficiency: 50–95%Charge temperature interval: Min. −35 °C, max. 45 °CSelf-discharge rate: 3–20%/monthSpecific energy: 35-40 Wh/kgEnergy density: 80-90 Wh/LSpecific power: 180 W/kg