Need to know how to charge ebike off grid? I show how to charge my fat tire beach cruiser ebike battery using a 12v PowerUrus Lithium Iron Phosphate battery that you would also use to power a trolling motor while fishing. Don’t buy an expensive power bank for charging and no need to charge it from your car or use solar panels – you already have the juice to charge the electric bike in your trolling motor battery! UPDATE! You can download the “RoyPow Fish” app to monitor the PowerUrus battery status!