Wild Man Bicycle Bag with Voltmeter and battery pack

This is a Wild Man bicycle bag with a built-in voltmeter and USB port. It's designed to be mounted on your escooter or bike frame for convenient charging and monitoring. Great for longer rides or if you need to keep your devices powered up! Purchased it a year ago, lost information on extended range. Got it originally for my segway Max g30 escooter. Since I lost the Info on the battery range extender I'm selling it for cheap.