48V 13AH 36V 15AH 1000W 750W Battery Down tube Electric Bicycle Bafang. 48V 13Ah battery for 500W 750W max 1000W motor. Included: 1x 48V 13AH lithium battery; 1x 54.6V, 2A batterycharging cord ，2 keys, mounting plate.
eBay