What is the difference between a 48V and 36V eBike battery?

Voltage affects power delivery — a 48V system provides more torque and better performance on hills and at higher speeds compared to a 36V system with the same capacity. Most quality eBikes now use 48V or 52V systems. A 36V 10Ah battery holds 360Wh; a 48V 10Ah holds 480Wh. For equal range comparison, always compare watt-hours (V × Ah), not voltage alone.