... the capacity available (50%--60% for lead-acid battery).2. Green and environmental, no containing acid and ... specific capacity, with higher capacity than lead- acid battery with same size.4. High cell discharge platform, ... 20 of the lead-acid-battery.7. Fast charge, 18 times of the lead-acid battery.8. Light weight, ... short-circuit, over charge and over discharge. 12V 4.5Ah Lithium polymer UPS battery