The 2nd cool thing is this Delta Q that has been re Tooled by David to accept a J1772 input and then plug directly into your cars battery pack. So this is how this could or would work.
Your cars Stock Delta q would be plugged into a standard 110 volt or J1172 plug charging away a 12 amps as normal.
This 2nd Charger can be a “Stay at home charger” or throw it in the trunk and charge at a “public charge station charger”.
If you decide to use it at home you could Fast charge at almost 30 amps with your stock charger charging at 12 amps and this 2nd charger plugged into a separate 20 amp circuit going at 12 amps.