Review on Efficient Sunforce 58104 3.5W 12V Solar 🔋 Battery Trickle Charger with OBD-II Connector for Optimal Charging by Andrew Sticher

. It shows me the status of the device and whether it is charging or not. So far the solar panel is working perfectly. I leave it in front and still don't have a dead battery like I used to when my car sits idle for days. I get in the car, unplug the obd2 connector, put the panel on the back seat and drive off. When I come back I put the panel back on the dash, plug in the obd2 connector and check the charge on the charge controller.