Review on 📶 Enhanced Communication for Renogy Charge Controllers: Introducing the Bluetooth Module RJ12, Compatible with Rover/Wanderer/Adventurer, BT-1 RS232 by Fock Dean

This Bluetooth device transmits information from the Renogy DC50S charge controller. As far as I know, this is the only device available for it. It reports the voltage and current being fed to the battery from the solar panels and an alternative source such as the car's alternator. It also reports the battery temperature. This is useful information but does not accurately reflect the charge level of my lithium battery. Basically 100% read. I can judge it by the number of amps going into it when charging. To connect to the device with my phone, I have to manually connect each time. Bluetooth devices usually connect automatically. This is a minor inconvenience. There is little documentation of what it reports. It wasn't until I hooked things up that I was able to find out. It easily connects to the charge controller and has enough cables for easy placement.