Solar panels

Morningstar charge controller

Renogy Wanderer 10A Charge controller

10W panel

32W panel

2024-03 I used to have a bank of four 12V/7A gel batteries rescued from several UPSes but they died finally, I used them with the 32W panel and the Morningstar controller. When I replace the battery bank I want to get a single LiFePO4 battery, probably around 20AH. I already got the Renogy before the lead batteries died. I am holding off getting another battery so this project is on hold.

Charge controllers

Renogy Wanderer 10A

PWM charge controller, costs about $20 Should work fine with LiFePo4 battery (or any Pb battery)

https://www.renogy.com/wanderer-10a-pwm-charge-controller/

Serial port

I wrote to service.renogy.com support and asked for more docs and got a pinout. A good start.

They did not come up with protocol specs but there seem to be some projects that have implemented access to the controllers.

https://www.reddit.com/r/SolarDIY/comments/vxc8h1/renogy_wanderer_rs232_port/

https://github.com/BarkinSpider/SolarShed/blob/master/RenogyWanderer.py