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Getting more precise charging stats without going full data logger?

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Tesla's app Charging Stats reports KWh added, rounded to the nearest integer. My EVSE (SolarEdge) reports to two decimal places. The difference between the two should reflect the charging inefficiency - usually Tesla is reporting 2 less on 30-40 KWh, but with the rounding there is a pretty wide range. I can't confirm any difference between 24, 32 and 40A with that roughness.

I don't need everything logged by some 3rd party - I'd just like to see more precision for these events. Is there any simple answer? Feature request to Tesla?
 
The charging overhead losses are impacted by temperature. The Tesla battery management system may warm or cool the battery during the charging session. This overhead is much greater than the efficiency of different charging amperages. Somewhere around 4% to 5% based on my Chargepoint charging sessions of ~90 minutes duration, 200V/30A i.e. 6kW charging rate.