It does appear that the EV vehicles are able to be charged by Level 1, 2 or 3 charging stations. From the writers understanding Level 1 is a low rate, long charge time that is more of a backup when Level 2 or 3 are not available. In the EV that I test drove it was simply a 120Vac extension cord that had to be plugged to 120Vac circuit outlet protected by 20 amp circuit breaker. The vehicle had a 50 foot cord and was stored in trunk. The low rate charger was part of the vehicle.
In the test program in which I participated a Level 2 charger was installed in my garage and was powered by 240 Vac plus a neutral connection. Part of this garage installation was a recording wattmeter that measured the kWh taken during recharge---handy. Again the AC to DC conversion was in the charging circuit that was part of the cars electronics. The kWh rating of the vehicle pack was 22.6 kWh and the charging system required about 5 hours to completely recharge a fully discharged battery. The test vehicle could not be recharged by a Level 3 charger.
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