Purchase notes 1 before purchasing, please confirm whether the picture and battery base port are correct. If you are not sure whether the battery is compatible, please click here to contact customer service for purchase guidance. 2 Free shipping on all orders.This bike battery are shipped from united states & china warehouse, delivery time is 7-25 working days. 3 Batteries are special items and cannot be returned. No refunds or exchanges if you buy the wrong battery applicable bike model style bike model bike style bikes 48v 10.4Ah 4 pins kt-d05 mt20ul amak00022 500w 48v fat tire 48v 7.8Ah 2 pins alx-072 mt20 spa000113 500w 48v product details battery type e-bike lithium battery pack applicable scope mt20 battery cell composition lithium color black rated voltage 48v rated capacity 7.8Ah 10.4Ah battery power 374.4Wh 374.4Wh max charge voltage 54.6V discharge cut-off voltage 35.75V max charge current 3a standard discharge current 5a max discharge current bms 20a over current protection 120a apply to electric motor power 500w battery charger 54.6V 2a charge time 5-6 hours security lock yes power switch yes net weight 2.95Kg 6.5Lb gross weight 3.5Kg 7.7Lb battery size 390*110*75mm 15.4*4.3*3.0Inch packing size 460*160*160mm 18.1*6.3*6.3Inch operating temperature charge 0 45 discharge -20 60 package content 1 x electric bike battery 2 x battery keys note: due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee t...