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Have you had a serious problem with your Bolt's HV battery?

  • Yes, a battery module (or the whole battery) needed replacement

    Votes: 5 4.0%
  • No, but the battery seems to have degraded a lot more than I would have expected

    Votes: 1 0.8%
  • No, everything seems normal

    Votes: 117 92.9%
  • I don't own a Bolt

    Votes: 3 2.4%

  • Total voters
    126
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Discussion Starter #1
I thought it might be good to try to estimate the prevalence of serious problems. Please vote, especially if you're a lurker who doesn't normally post.

If you say yes, please also reply in the thread and say how many miles were on your Bolt when the issue happened.
 

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What is your definition of a "lurker"? Is it: a) someone who "looks at" and "reads" the posts but never "joined" and therefore cannot post; b) one who does not own an EV but has an interest; or, c) one who owns a Bolt EV but does not usually share experiences? I would think that only the votes of "owners" ("drivers?") would add valid data.
FTR: I bought my 2017 Bolt EV Premier in 5/17, have 29,268 miles, and have had NO 12 VDC or traction battery issues. {I did cast my vote}
 

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Discussion Starter #5
What is your definition of a "lurker"? Is it: a) someone who "looks at" and "reads" the posts but never "joined" and therefore cannot post; b) one who does not own an EV but has an interest; or, c) one who owns a Bolt EV but does not usually share experiences? I would think that only the votes of "owners" ("drivers?") would add valid data.
FTR: I bought my 2017 Bolt EV Premier in 5/17, have 29,268 miles, and have had NO 12 VDC or traction battery issues. {I did cast my vote}
To vote at all, you have to be a member (although I suppose you could register just to vote in this poll, which would be a very generous thing for a regular [lurking] reader to do.).

By “lurker”, I mean someone who reads the forum and doesn't usually post. Whether or not they own a Bolt is handled by the “I don't own a Bolt” poll option — it may not help much with the question at hand, but I'm curious about how many of the 5800 purportedly registered on the site are owners. I suppose I'm also curious how many actually are active enough participants to vote.
 

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I plan on voting once I get my Torque working and look at my battery info. I'll need some help in interpreting the data I suppose.
 

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Discussion Starter #7
I plan on voting once I get my Torque working and look at my battery info. I'll need some help in interpreting the data I suppose.
I wasn't expecting that anyone would need to do any homework to answer the question. Based on everything you've said on the forum, isn't your Bolt working fine?
 

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Just fyi for those who are experiencing issues (like reduction to 90 miles of range or <29kwh usable) but being told to pound sand by their dealers... the majority of the results from this poll being positive doesn't mean you are not experiencing issues. Try another dealer. Take screen shots of efficiency and kWh since last full charge for a full discharge to use as ammo against ignorance.
 

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I wasn't expecting that anyone would need to do any homework to answer the question. Based on everything you've said on the forum, isn't your Bolt working fine?
Yes, I'm very happy with it. It did hit all the points I was looking for and the most important one is it has now educated me on what works for me and my driving habits and what doesn't. I believe it's working fine. I just wanted to see the volts on all the batteries before I could say it was working fine.
 

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Discussion Starter #13
I didn't vote, as I have only 6,600 miles, with zero issues. But I would be interested in the results of those from owners with some years/miles on their Bolts.
I'd say vote. You can always go back and change your vote. I only have a little more than double your miles in two years of ownership. Arguably failures can happen at any time, at 500 miles, 5000 miles, or 50,000 miles.
 

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I didn't vote, as I have only 6,600 miles, with zero issues. But I would be interested in the results of those from owners with some years/miles on their Bolts.
I voted even before your post even though I have just shy of 6500 miles on my '19. I didn't think anything of it.

No battery problems on my car, yet.
 

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I have 2017 Bolt with 16K miles on it, and I recently experienced a sudden range drop of about 40 miles, which given my ~4.0 Miles/kWh average suggests the battery has lost roughly 10 kwH of capacity, or 16%. I was sufficiently concerned to buy an OBDM adapter and TorquePro, which confirmed that I have a bad battery cell. The car went to the dealer on Friday, but they haven't yet gotten back to me with their own findings.

The interesting question is whether this is a standalone failure, or related to the fact that my Bolt's on-board charger unit (which converts AC power from the ESVE to DC before it's routed to the traction battery) failed in rather dramatic fashion this past July, creating a dead short during charging. My Clipper Creek ESVE was smart enough to detect the problem and shut down, but when I attempted to troubleshoot that shutdown using the 110V ESVE that came with the car, I saw smoke and an orange glow coming from the motor compartment before hurriedly unplugging the unit. GM did repair the car under warranty, although it took almost a month as GM's product claims division, which AFAICT gets involved with incidents that have potential legal repercussions, felt the need to investigate. After the repair, all seem fine unit mid-October, when the range drop noted above occurred.
 

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The interesting question is whether this is a standalone failure, or related to the fact that my Bolt's on-board charger unit (which converts AC power from the ESVE to DC before it's routed to the traction battery) failed in rather dramatic fashion this past July, creating a dead short during charging. My Clipper Creek ESVE was smart enough to detect the problem and shut down, but when I attempted to troubleshoot that shutdown using the 110V ESVE that came with the car, I saw smoke and an orange glow coming from the motor compartment before hurriedly unplugging the unit.
Hm... we are under the impression that Clipper Creek made the OEM charger for Chevrolet.

Kind of make me want to get a 25KW DC charger. I guess if I have 3 EVs to charge, this might be worth looking into.

 

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The Chevy dealer I charge at has one of these. It works great when it works, but apparently burns up circuit boards. Four times already at a cost of $4k a pop. Latest time, a BMW tried to charge (sign says for GM owners only) and it didn't work so the person hit the emergency stop button. Somehow that was enough to smoke it.
 

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The Chevy dealer I charge at has one of these. It works great when it works, but apparently burns up circuit boards. Four times already at a cost of $4k a pop. Latest time, a BMW tried to charge (sign says for GM owners only) and it didn't work so the person hit the emergency stop button. Somehow that was enough to smoke it.
You mean the Bosche 25KW DC charger? Or the BMW?
 
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