I spent $299 on a Duosida 240 Volt 16 amp charger I got from Amazon.com. I bought a dock and a hook for hanging the cord. This is a 16 amp unit but that is all you need for C Max Energi. It charges in 2 hrs and 10 minutes from empty. Charging loses are 10% less and you will get more ev miles due to the faster turn around time.