Confusion b/w battery percentage and battery voltage for Li and AGM batteries

[padhupradheep]

Currently the relayboard firmware sends the battery percentage information in the battery voltage field rather than the battery percentage itself for Lithium batteries.

Thus the battery_voltage field in the state topic publishes the battery percentage and not the battery voltage.

Also in the battery_state topic we again calculate the SOC from the battery voltage that we receive from the firmware, which is a wrong calculation. This calculation is specific only for the AGM batteries.

AFAIK, there are no plans to change the firmware for sending the voltage information from the Lithium batteries. Therefore the data needs to be segregated and adapted according to the above mentioned description.