Does the Ranger need to be turned on while charging? August 17, 2021 22:26 Updated Yes, both the Ranger and the stock battery need to be turned on while charging. Related articles Why isn't my Ranger indicator showing 100% after initial install? How should I charge my bike after installing the Ranger? What kind of performance benefits will the Ranger give me? Is ChiBatterySystems or the Ranger mod associated with Super73 as a company? The Ranger Install Guide