Remove Solax Remaining Battery Capacity state class

[prehor]

The state class for the Remaining Battery Capacity should be removed, consistent with other battery capacity sensors using the ENERGY device class. The ENERGY device class cannot use the MEASUREMENT state class.

Fixies #1137

[prehor]

A better solution might be to change the device class to ENERGY_STORAGE, which is compatible with the MEASUREMENT state class.

[steps56]

plugin_solax.zip
Hi,
as I already told at my initial issue post:
The clean solution is to change
state class
from
ENERGY
to:
TOTAL

[steps56]

plugin_solax.zip

The state class for the Remaining Battery Capacity should be removed, consistent with other battery capacity sensors using the ENERGY device class. The ENERGY device class cannot use the MEASUREMENT state class.

Fixies #1137

Isn't any solution, as still throwing error/warning at system logs.
Added edited errorfree solax.py as a .zip at top