gpsman wrote:Most ChargePoint DCFC that are floor standing models (not pole mounted) are “rated” at 50 kw and tend to shove 44kw to 47kw into the Bolt.
The newest Chargepoint DCFC is “rated” at 62.5 kw (I hear it is capable of more but software limited to 62.5 kw). It will shove about 55kw into the Bolt.
The Bolt EV itself is limited to 150 AMPS of input current, so it won’t matter if you could connect to something more than 60kw. The Bolt’s maximum charge rate is 60kw as 150 amps x 400 volts.
Well, the Bolt's max current *IS* 150 amps, however the car steps down (pulls less current) long before getting to 400V. I *think* that it steps down (the first time) around 370V, lowering the charge current to around 105A (and thus dropping the 'charge rate' from around 55kW to around 38 kW at that point). The first step down (from 150A to 105A) happens about when the battery is 55% full.
The Spark EV, on the other hand, will pull max amps (up to 135A) until charge voltage reaches 400V (around 75% 'full'), then it slowly tapers the charge (amps pulled) to keep the battery voltage at 400V. It is more of a 'lowering charge rate *curve*. rather than a 'step down' like the Bolt does (fairly sudden drop).
Both vehicles will limit their current draw based on battery temp as well (either too cold or too hot).