All EVs have an acceptance rate and that is the fastest they will charge; the acceptance rate varies by vehicle and that the ideal station will be matching that acceptance rate. If your current vehicle has a relatively slow acceptance rate, you can consider future-proofing. Our EVSE selector tool will tell you the acceptance rate, match your vehicle with a charging station, and also recommend a faster one for future-proofing.
Most models of the Chevy Volt are limited to charging at 15A for charging so you would be able to use our LCS-20P model and receive the fastest charge. With the new 2019 Volt there is an option for an upgraded charge package that would allow the vehicle to charge at about 30A. For the Volt with an upgraded charge package a higher power unit, like our HCS-40, would provide a faster charge. If your Volt is limited to the 15A for charging a higher power unit will not charge the vehicle any faster, however having the higher power model installed would allow you to be ready for a vehicle you purchase in the future that may take in more power. We refer to this as future proofing your installation.
Feel free to ask us more questions you may have about EVSE: Click here to contact one of our product specialists.