New original product A power cell, full power, long life, more safe; New quality lithium battery protection plate, conventional support 500W/30A continuous discharge; The outer layer shall be wrapped with fireproof board, insulated and fireproof; All batteries are covered with insulating surface pads/fully protect the battery and insulate against short circuit; Forming nickel sheet, each group of battery current is more balanced, so that the battery life is longer. Application: electric wheelchair, electric lawn mower, solar panel, robot, etc.