What kind of battery capacity increase can I expect from the Ranger? July 14, 2021 15:17 the Ranger will double your bike's battery capacity from 20AH to 40AH. Related articles What kind of performance benefits will the Ranger give me? What modifications to the bike are needed for installing the Ranger? Help! I installed a Ranger mod and now my bike won't throttle! The Ranger Install Guide What's the correct order to turn my bike on/off with the Ranger?