bottle ebike battery 36v 10.5ah 48v 7ah samsung/lg lithium cell for bafang tsdz2 500w 350w 250w electric bicycle motor

.with patent private mold bottle style case, other manufacturer don't have and can't copy small and light fit most of electric bicycle waterproof ip65 and solid aluminium alloy, stronger a lot than normal plastic case with usb port can charge cell phone and bluetooth speaker battery with on/off switch, help you save more power