issue with inaccurate lifetimekWh kWhCounter

[nean-and-i]

After implementing "Status updates for MQTT/HASS in fakeMaster=2 mode" #469 I discovered that the kWhCounter value is way too off.

I charged around 22kWh, also car and Tesla app is showing it, but according to the kWhCounter it was about the half ~10kWh.

So my conclusion was, either the TWC counter itself is inaccurate or I'm using kWhCounter in a wrong way or something might be wrong with the calculations of kWhCounter?