I'm making some modifications to the configuration and code for the SolarMax2 using the DFRobot controller. Since I'm working inside, I'm using a 16V DC power supply as a stand-in for the solar panel. When I connect it, I've got 16.4V on the solar cell inputs, with MPPT off it shows the outputs active (5.21 13.54 volts respectively with 12.12V on the lead-acid terminals) and the battery scale full
But when I set MPPT on, i would have expected it to charge, albeit "smarter" yet still provide output as the battery is sitting at the same 12.12V:
I'm not sure I understand this - does it imply that with MPPT on the system can not drive the 5V/12V outputs while charging? I've checked the controller manual and don't see anything that would explain it. I've also run the same configuration with two different controller boards, same results.
Also, do you sell the Mini Pro LP boards in the shop yet, or at they just allocated to the KS rewards for now?
Thanks. I figured out more about what was happening, there was a 12.6K resistance across one channel of the two terminals on the INAa3221 connected to the battery, probably a cold solder joint under the terminal block, or the chip challen was fried. Replacing it with another one corrected at least the problem with the battery and it will charge/discharge and supply the outputs with no power supply connected.