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In the past I've calculated charging efficiency for AC Level 1 and Level 2 charging. This week I let the car get low to do a full charge on DC. 40 degrees ambient temp, starting SOC 16%, ending SOC 100%. The car's max charge speed was only 22 kW. (The last Chevy battery update has kneecapped my DC charge speeds)
The Bolt used 53.4 kWh to drive 170 miles and took 55.013 kWh to get to 100% = 3% charging loss.
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