Renogy 40A 12V/24V Auto MPPT Solar Charge Controller with LCD Backlit Display w/ Temp Sensor Fit for Gel Sealed Flooded and Lithium Battery, Rover Elite 40A (Amazon Affiliate)
US: https://amzn.to/3FDzve4
Connecting Renogy BT-2 Bluetooth Module to Rover Elite Charge Controller: https://youtu.be/7GkDid7O3Qw