... of the capacity available (50%--60% for lead-acid battery).2. Green and environmental, no containing acid and heavy ... Long cycle life, 4-5times of the lead-acid battery.6. Low self-discharge rate, only 1/20 of ... times of the lead-acid battery.8. Light weight, only 1/3 of the lead-acid battery, no need to add water ... current, short-circuit, over charge and over discharge. 12V Li polymer battery for UPS