On my charges:
Teslafi is (incorrectly) calculating negative or incorrect "kWh Added".
I believe this happens because Teslafi is considering the initial charge of a given charge event to be the value of the "Charge Energy Added" from an immediately previous charging event.
Can't really explain this very well, but you'll quickly see the root of the problem when checking (my) tables from the links above
On thing is sure: it's not calculating the "kWh Added" correctly for those (and some other) charges.
Customer support service by UserEcho