This device is well made and works functionally as advertised. You don't have to connect to it like you would with a regular Bluetooth device. Location Services must be turned on and you can then connect to them as long as Bluetooth is on and you are within Bluetooth range. I tested my battery with the OEMTools analyzer and got the exact same readings so they are accurate. It seems better to have it in the app so I don't have to unpack my RV's battery. I set it to alerts so I know when my battery reaches 50 percent capacity.
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