Will my battery gauge still be accurate after installing the Ranger? July 14, 2021 15:23 Yes! As the batteries work in parallel, and the battery gauge is based on Voltage, the percentage will still be accurate. Related articles Can the Ranger replace my stock battery? How do I charge my bike after installing the Ranger? What if I disconnect the Ranger? The Ranger Install Guide Does the Ranger need to be turned on while charging?