The lead–acid battery was invented in 1859 by French physicist Gaston Planté
and is the .... charge (192,971 coulombs) from 642.6 g of reactants, or 83.4
ampere-hours per kilogram (or 13.9 ampere-hours per kilogram for a 12-voltbattery).
Lead-acid Rechargable Battery Information - Battery University
Lead-acid is the oldest rechargeable battery in existence. ... The lead-acid battery
has retained a market share in applications where newer battery ..... 12V 7Ah
SLA batteries are a global standard for applications where weight is incidental.