alozzy wrote:You are focusing on the wrong metric. How much does the percent state of charge increase over the 8 hours of charging?
For a 120V supply, the stock EVSE should pull about 12A, so the charging rate is nominally 1.4 kW, but with losses more like 1.3 kW. If the charging rate averages 1.3 kW over 8 hours, that should add about 10 kWh of energy to the battery pack. So, you should see the SOC jump by at least 50% after an overnight charge.
More L1 losses than 0.1 kW. I think ~ 83% make it to the battery so 1.44 KW * 0.83 = 1.2 kW.
And that is based on a battery with new-like resistance.
I'll call it 1.15 kW for his car, so
1.15 kW * 8 hrs =
9.2 kWh over 8 hrs.
Unless the GOM is being fooled by a tale-end drive up a mountain the reported range increase is unlikely to represent 9.2 kWh into the battery. As I said earlier, this sounds like overheating and a truncated charging.