Sealed Lead Acid Battery – 12V, These ACDC batteries use special alloyed calcium-lead which leads to extremely low levels of “electrolyte decrease”. Therefore there is no need to top up with distilled water if the charging system remains error free. FEATURES Complete protection against reduction of sulfuric acid Consistent starting performance Life Span:3 – 5 years in standby service SPECIFICATIONS Type: Lead Acid Nominal Voltage: 6V Nominal Capacity:7.2Ah Terminal Type: Lug Size: 150x65x102mm