I just started using the MPPT 1210 HUS charge controller. Can the battery type be configured over the comm port? I am able to pull the data from controller with the ?output\n command.
It looks like your firmware seems to be at a rather old state because it uses the old data object structure, so I recommend to flash the most recent version from main branch.
There is currently no way to configure a particular battery type with a single command. However, you can change all individual charging parameters and adjust them to your battery type.
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Upgraded the firmware. But it seems the calibration went off. This is how the data looks like without the solar connected:
Seems to be working fine after a hard reset (disconnected from batteries and reconnected).