sandramjet wrote: ↑Sat Nov 04, 2017 11:28 pm

Leif wrote: ↑Sat Nov 04, 2017 10:54 pm

I would "guess" the Bolt with a max. of 50 kW vs. Tesla 120 kW. Would take 2-3X longer with a DC fast charge. Level 2 chargers would be around 7 kW, or around 15x longer.

Thanks for the datapoint.

Anyone have a sense of how easy it is to find DC fast charge or Level 2 charge stations for Bolt compared to Superchargers? (is there a web page somewhere that shows charger locations like it does for Superchargers?)

I think the 2-3x longer estimate is a bit pessimistic. Both the Bolt and the Tesla will 'taper' down the charging rate over time in a way limited by the battery versus state of charge (SOC). You could dig into the Tesla blogs to figure out real charge times at SC stations....I think few people hit the 120 kW power (which is intended for future cars that can use it), instead hitting a ~100 kW peak initially, which then tapers down pretty fast.

The Bolt will also taper, but if the battery of the Bolt and the Tesla are similarly sized (with well engineered TPMSs), then they both probably have a similar maximum charging speed and taper profile. Which will be **less** than current Model S and X, due to smaller pack size.

FYI, the manual for the Bolt says that its fast charge is limited to 80 kW (not 50)...although there are now zero CCS DCFC's in the US currently above 50 kW. The Bolt future-proofed the other way...toward working with future, higher power chargers.

I think the distance you are driving is important. Both the Bolt and the '3' have ~200 mile range at max HW speeds. So for trips that are 150 miles each way (300 round trip) the two cars are

**equally** functional, assuming charging at your destination (which might be an L2 at a hotel, realistically, in both cases). That is, trip time is the same, as no FC is required.

If you are adding 100 miles to the one-way distance (now 500 miles round trip) and assuming destination L2 charging, both cars need one DCFC stop near the middle, that adds 100 miles of range, or about 25-30 kWh. The Bolt at a 50 kW charger (many are more like 42 kW btw), this will take 30-40 minutes. On the model 3...let's say optimistically, 20-25 minutes.

So on this 500 mile round trip, the difference is 10-15 minutes X 2 (for the round trip) or 20-30 minutes...in 9 hours on the road, (8 hours of driving plus 1 hour of charging stop).

In summary....the best fast charging stop is no fast charging stop....just having the darned range you need to get there. Once you are stopping, its a PITA either way....20 mins versus 30...you'll care more about the amenities at the stop.