Review on Lectron Level 2 Electric Vehicle Charger (240V, 16 Amp) with 21ft J1772 Extension Cord and NEMA 10-30 Plug by Wanick Palermo

The only complaint, looking at it, is that the charging head is very snug on the 2015 Ford C-MAX. The rest of using this charger is just bliss. During peak current, the cable (no kinks, no sharp bends) is near ambient temperature (may be 1F warmer on rubber). Electronics can be 3F above the atmosphere. The C-MAX Energi (with 7.6 kWh battery) is fully charged in about 2:30. I think it draws 15A of current. So 240 V x 15 A x 2.5 hours = 9 kWh. This means that the efficiency is 84%, which is enough for me. Incidentally, length appears to be measured tip-to-tip when stretched. Compared to other options on Revain, this one isn't the longest. (This suits my needs and I don't need the extra resistance of the longer cable.)