[BoltEV.Mike]

I just completed a 1500 mile trip in my 2019. On the return leg the a fast charger shutoff at 58%, at my next charging stop, I stayed in the car and noticed that at 58% it sounded like the AC compressor turned on. This was follow by a notification that fast chaging was terminated. The outside temperature was 70 deg - earlier on the trip I charged at 95+ deg with no problems. Has anyone heard of this issue?

 

[Openair]

Some chargers limit sessions at 30 minutes or the charger itself over heats. If it's consistently happening and an issue with the vehicle you should get trouble light and a DTC.

 

[hickman55]

Yep - I've heard that EVGO DCFCs only go 30 minutes then you have to restart them. This may be outdated, but there could still be some out there.

 

[p7wang]

Would be nice if the free stations do that and prevent you from getting another 30 min until another car had a chance to charge (this would require that the charger can read the VIN) and prevent people from hogging the DCFC trying to get to 100% charge.

 

[ZoomZoom]

Would be nice if the free stations do that and prevent you from getting another 30 min until another car had a chance to charge (this would require that the charger can read the VIN) and prevent people from hogging the DCFC trying to get to 100% charge.

I read here that the last 20% on DFCF is much slower than the preceding fill up. Do people really sit there and go to 100%? I'm still throwing up in my mouth at the thought of charging outside of home unless it is 100% absolutely necessary and completely unavoidable.

 

[p7wang]

I read here that the last 20% on DFCF is much slower than the preceding fill up. Do people really sit there and go to 100%? I'm still throwing up in my mouth at the thought of charging outside of home unless it is 100% absolutely necessary and completely unavoidable.

I have owned by Bolt for a little over a month now, I use free L2 and occasional Medium charger around the city. I go up to 82% on the medium charger and as high as 95% on L2 because I baby the battery. However, I would think someone could wait to charge to 100%, esp if they have a smaller battery, just to reduce their charging trips.

There are still not that many EVs here, so I have never arrived to a free charging station to find the stalls all filled. I do see it happen on the ChargePoint app at times but never in person.

 

[ZoomZoom]

I have owned by Bolt for a little over a month now, I use free L2 and occasional Medium charger around the city. I go up to 82% on the medium charger and as high as 95% on L2 because I baby the battery. However, I would think someone could wait to charge to 100%, esp if they have a smaller battery, just to reduce their charging trips.

There are still not that many EVs here, so I have never arrived to a free charging station to find the stalls all filled. I do see it happen on the ChargePoint app at times but never in person.

My time is worth more 'to me' than sitting there for a free charge. I wholly understand that there are different strokes for different folks and fully respect and understand that you have adapted to a free charge somewhere and occupy your time accordingly. I drive under 100 miles per day, I have reduced electrical rates at night so I charge at home every 2 to 3 days.

 

[martinknutson]

Yep - I've heard that EVGO DCFCs only go 30 minutes then you have to restart them. This may be outdated, but there could still be some out there.

I used an EVGO DCFC yesterday, in Roseville CA, and my session was 35 minutes. It stopped because I reached the first taper, and I manually stopped it.

 

[Riderice]

Using an Electrify America DCFC once, charging randomly stopped after about 15mins. I don't recall the state of charge (would be weird if it had been 58%!), and I didn't have time to mess with it, so I left.

In general I have about 50% luck with DCFC of all kinds, which really does not inspire confidence for long trips, especially in winter...

 

[NewsCoulomb]

This was an issue specifically with ABB Terra HP chargers that I encountered (both on Electrify America and on EVgo). I believe it has since been patched. I actually ran into this issue on EVgo when I was driving out to Las Vegas and back (it's visible at 5:39 in the video).

Again, though, this hasn't been an issue for awhile, and I think it was corrected at the same time ABB issued a patch to address issues that Chevy Spark EV owners were experiencing.

 

[wesley]

I read here that the last 20% on DFCF is much slower than the preceding fill up. Do people really sit there and go to 100%? I'm still throwing up in my mouth at the thought of charging outside of home unless it is 100% absolutely necessary and completely unavoidable.

Assuming ideal charging conditions (right temperature, DCFC with 150A+ current, etc.) it usually goes like this. Actual percentage may differ slightly.

0-50%: up to 55kW
50-67%: up to 40kW
67-83%: up to 25kW
83-93%: up to 16kW
93-100%: tapers slowly down to 3kW

The last 20% is really slow. It takes about 40 minutes to an hour to go from 85% to 100%. Also, driving at 65mph consumes about 15kW under temperate conditions. This means that if you're charging beyond 83% during a long-distance trip, you're filling up slower than you can consume. If the "fast" charging is what you're after and you're not going to be travelling through the so-called charger desert area, you should stop around 65%. Or 80% if you're not too strict.

 

[Riderice]

Does anyone know (from spec sheets, or personal experience) if extreme heat would prevent a DCFC session from starting up? One of my road trip ChargePoint fails was on a really hot day (upper 90s), right after getting off the interstate. I wonder if the car/charger decided it was just too hot to start a session? (Or should it have still charged, just maybe slower...)

 

[p7wang]

I've seen medium speed chargers start then quickly drop down to lower charge rate and then shut down, but I think that was because it had a broken cooling fan.