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by JeffN
Wed Feb 27, 2019 3:19 am
Forum: Local / Regional Discussions
Topic: Update on CalTrans District 9 (Sierra Nevada East Side) DC Fast Charger Program
Replies: 4
Views: 800

Re: Update on CalTrans District 9 (Sierra Nevada East Side) DC Fast Charger Program

In its first report to California's Air Resources Board, Electrify America proposed at least three DCFC stations on US 395. There's no word on whether those stations are still part of Electrify America's plans or, if they are, when they might be installed. I believe the US 395 sites are still plann...
by JeffN
Tue Feb 19, 2019 3:46 pm
Forum: Batteries and Charging
Topic: Request Battery Heating/conditioning To accelerate fast charge in cold climate
Replies: 7
Views: 751

Re: Request Battery Heating/conditioning To accelerate fast charge in cold climate

I agree that some kind of user-initiated battery pack pre-heating might be a useful feature for speeding up fast charges during the winter. I wrote an article about these issues that includes a graph showing the Bolt’s DC charging rate at different pack temperatures. It also has a link to the source...
by JeffN
Sat Jan 26, 2019 11:15 pm
Forum: Batteries and Charging
Topic: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being made.
Replies: 345
Views: 46967

Re: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being m

For example, the last one I really paid attention to was the ChargePoint "Express 250", it is listed as "max 156A, 200–1,000V DC" . It turns out that the max power is 62.5 kW, not 156kW (156A x 1000V) - which works out to 156A around 400V (which is a reasonable V for today's car...
by JeffN
Sat Jan 26, 2019 11:02 pm
Forum: Batteries and Charging
Topic: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being made.
Replies: 345
Views: 46967

Re: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being m

This covers everything. https://en.wikipedia.org/wiki/Combined_Charging_System CCS1 does 200 amps, CCS2 does 500 amps, how they balance the voltage out in that equation will be entirely up to the power supply designer, they'll either max out at a number of amps, or a max grand total power. Also, do...
by JeffN
Mon Jan 14, 2019 7:07 pm
Forum: Batteries and Charging
Topic: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being made.
Replies: 345
Views: 46967

Re: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being m

Baker, Ca site now showing all 6 chargers active; "Dec 13, 2018 Astrid and Niska are original 50kWh. Chance and Ollie are new 100kWh. Ivo and Janus are new 350kWh. All are same $0.20/min but I expect that to change in future with 2019 cars that can actually take advantage of those ultrafast ch...
by JeffN
Mon Jan 14, 2019 6:59 pm
Forum: Batteries and Charging
Topic: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being made.
Replies: 345
Views: 46967

Re: EVgo DC chargers were horrible up until the beginning of 2018. They're still not perfect, but improvement is being m

The Chevy Bolt allows for 150 amps of DC. The EVgo screen reported 110 amps maximum at 40% SOC. I'm not sure if this was a limitation of the charger, or if it was limited because there was a BMW I3 using DCFC on the adjacent charger. My guess is that 110A was due to cooler winter temperatures. For ...
by JeffN
Sun Dec 30, 2018 9:47 pm
Forum: Local / Regional Discussions
Topic: Madera Electrify America DCFC Station Underway
Replies: 18
Views: 2040

Re: Madera Electrify America DCFC Station Underway

JeffN, Thanks for posting! I just returned from my nearby Electrify America station where I have made numerous attempts to charge with no luck. I really didn't need to charge but was anxious to see if this would fix my issue. Indeed it did. Worked like a charm. The build date on my Bolt EV is Augus...
by JeffN
Fri Dec 28, 2018 4:39 pm
Forum: Local / Regional Discussions
Topic: Madera Electrify America DCFC Station Underway
Replies: 18
Views: 2040

Re: Madera Electrify America DCFC Station Underway

JeffN, Thanks for the information. I watched the video. I will return to the Electrify America station in my area when I get a chance and give this procedure a try. I'll report my experience. I’m looking forward to finding out if this workaround “fixes” the problem you were having. When was your Bo...
by JeffN
Wed Dec 26, 2018 3:42 am
Forum: News and Main Chevy Bolt EV Forum
Topic: Bolt EV problem with liquid-cooled CCS cables
Replies: 2
Views: 658

Bolt EV problem with liquid-cooled CCS cables

Now that nearly 50 charger locations featuring liquid-cooled CCS cables are open more Bolt EV owners are running into failures when trying to charge on them. Many of these failures may be caused by a common issue. The good news is that this issue has an easy workaround. I wrote an article recently a...

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