1.More than 600 cycle life 2.Light weight 3.CE,RoHS,UN38.3, CB, MSDS ect. 4. ... for more than 600 cycles.3. Safety function: polymer Li-ion battery use the soft package and does not contain liquid ... 5.Unique aluminium alloy case with light weight, so that it can reduce the weight of E-bike.Specifications1.Basic CharacteristicsProduct ... UN38.3 ISO14000 ISO9000 and so on 12v 12ah lithium polymer battery