Power:0W-1500W(36V 15AH),0W-1800W(48V 15AH). Energy:540Wh(36V 15AH)/720Wh(48V 15AH). Capacity (amp hours) : 15Ah. If it's 36V, buy a 36V battery. If it's 48V, buy a 48V battery. 10Ah,15Ah,20Ah, and 30Ah represent the battery capacity and indicate the range.
Standard connector with #5 connector(T plug). If it's 36V, buy a 36V battery. If it's 48V, buy a 48V battery. Built-in BMS. 1 x 36V / 48V Lithium ion Battery. 36V 14AH 100W-1000W. 36V 10AH 100W-1000W.