AOVOPRO EB60PRO electric bicycle is equipped with a 48-54.6V high capacity detachable lithium battery, with a range of up to 40 miles. The battery is durable, anti-theft. The high-quality 500W brushless motor allows you to easily climb hills, with a speed of up to 22mph (The default maximum speed is 15.5MPH, and after lifting the speed limit, it can reach 22MPH).