[paulmcallister]

Hello,

I apologize if this as been asked and answered already but I couldn't find it in a search of the threads. Has GM published tables on charging?, For example time to charge with 220v @ 20a, 220v @ 30a,....40a and so on?

Thanks, Paul

 

[telveer]

Bolt EV has a 7.7kW onboard charger (which is generally accepted to be about 90% efficient)

As a general rule, multiply your EVSEs Voltage and amperage to get wattage.

A 32A L2 EVSE with a 220V feed can supply ~7kW. So, it is not the fastest option.

A 40A EVSE with a 220V feed can supply up to 8.8kW (but Bolt will take no more than 7.7kW).

However, most US households support 240V. A 32A L2 EVSE at 240V would be the most perfect (7.7kW) solution for the Bolt EV.

Anything bigger would not offer any additional advantage, at least for the Bolt.

Now that you have this information, it should be fairly straightforward to calculate how much time it will take to charge the Bolt EVs 60kWh battery. Do note that as the battery gets close to full, Bolt will taper off the charge rate. The last 5% or so charges the slowest.

 

[Loboc]

In addition, charge rate can be limited by battery TMS. Too hot or too cold will reduce the charge rate.

The house voltage can vary as well. Mine runs a little high. 248v usually. Charges slightly faster.