It has the same battery as the Izip Protour. Spare batteries are hard to find for the Tranzx brands. I have a 2015 Izip Dash and had a very hard time getting a spare battery. The guy at California gave his word that the battery will be delivered when in reality there was no supply so he was forced to send me the battery that was on the display Izip ebike model from his store. Later, I bought a highly discounted 2015 Raleight Tekoa IE (yes 28 MPH) that share the same battery. Now I have 2 spare batteries for long competitive rides where I can keep up with and even beat professional cyclists.