Purchase notes 1 before purchasing, please confirm whether the picture and battery back port are correct. If you are not sure whether the battery is compatible, please click here to contact customer service for purchase guidance. Don't buy wrong wrong purchase and cannot be used 2 the port on the back of the battery is different, so it is not compatible and the battery base cannot be replaced. 4 Pins dp-5c : there are 4 pins on the insert port on the back of the battery and no white screws next to it. 4 Pins hl068 : there are 4 pins on the insert port on the back of the battery and 2 white screws next to it. 3 Free shipping on all orders.This bike battery are shipped from united states & china warehouse, delivery time is 7-25 working days. 4 Batteries are special items and cannot be returned. No refunds or exchanges if you buy the wrong battery 5 please check the primary battery specification and battery port before purchasing. The 36v 10.4Ah battery for 350w h7 electric bike, and the 48v 10.4Ah battery for 500w h7 electric bike applicable bike model style bike model bike style bikes 48v 10.4Ah 4 pins dp-5c h7ul amak00017 27.5 500W 48v 48v 10.4Ah 4 pins hl068 h7 spa000038 27.5 500W 48v 36v 10.4Ah 4 pins hl068 h7 spa000038 27.5 350W 36v product details battery type e-bike lithium battery pack applicable scope h7 battery cell composition lithium color black rated voltage 48v 36v rated capacity 10.4Ah battery power 499.2Wh 374.4Wh max charge voltage 54.6V 42v discharge cut-o...