... of the capacity available (50%--60% for lead-acid battery).2. Green and environmental, no containing acid and heavy ... and Hg.3. High density of energy, high specific capacity, with higher capacity than lead- acid battery with same ... of the lead-acid battery.8. Light weight, only 1/3 of the lead-acid battery, no need to add ... short-circuit, over charge and over discharge. 12V Li polymer battery for UPS