36v Li Ion Battery Pack High power LFP e-bike battery pack,High energy density,good capacity,better safety ... for more than 600 cycles.4) Safety function: polymer Li-ion battery use the soft package and it does not contain ... not be harmful to people.5)No pollution: the battery does not contain any harmful material, so it is ... Plug/Air Plug Case MaterialAluminum Alloy + Plastic 36v Li Ion Battery Pack