It is difficult to measure the condition of the 12V battery sort of doing a load test and using a 12 volt plug-in monitor. By and large, their indexes are atrocious (often using only manufacturer terms like "connected multimedia infotainment system" for what we used to call a stereo). It doesn't matter how windy it is, rain, etc. After two days, the dealer called and told me that GM had agreed to replace the battery, but that the replacement needed to be shipped from Oklahoma, and that I could have my Bolt back until the replacement battery arrived. The slow level 3 charging indicates they are not on par with Tesla. My car has always been in the 55 to 56 kWh capacity range. (Find it on page 322 of the owner's manual in .PDF form; it runs a hefty 360 pages.). Seems like a lot of problems occur when the vulnerable 12V malfunctions. The value of the 8% drop is not precise, but rather estimated based on energy consumed while charging, and at least partially could be the result of a software update done by GM during one of the recall actions. Hopefully my 2020 Bolt EV will last the rest of my life: I’m 68 hahahahaha. Yay! Justifiably, one of the biggest worries of electric-car shoppers is whether they'll have to replace the battery over the time they own the car.
It is impossible. When I had my Ford Focus Electric other members of the forum devised a way to measure battery capacity by just running the cabin heater full blast until the battery drained down to zero. It's fair to say that a 10-percent loss after 100,000 miles—which would cut the Bolt EV's rated range from 238 miles to 214 miles—would likely be shrugged off by owners. Battery degradation is a serious issue with Nissan's Leaf. According to Edmunds, the 2019 Bolt Premier that I leased on 9/15/19 had been on the dealer's lot for 138 days, which means the dealer took delivery around 4/30/19. After turning off the car, getting out, closing the door, and reopening the door, it showed me I had 5 miles remaining. I wouldn't bother doing a test from hilltop. All I could find was the data I posted. No problems. About a week after I got the car back, the dealer called to say the battery was in, I dropped off the car a second time, and two days later it was ready to go.
GM is under appreciated for their batteries. All batteries lose capacity over time and use, but the rate of battery degradation becomes less important in long-range EVs. I took the car in for diagnosis (after seeing via OBDM that I had a bad cell). I agree. The car's manual says capacity may drop by 10 to 40 percent over the life of the battery…
Looks like they don't account for the top buffer but it's good to see slow as molasses DCFC charge curve chosen by GM is (probably) paying dividends here. Luckily, it was under full warranty, and the 12v and the drive battery were both replaced at no cost to me. You are worrying way too much about the battery, this is not a Nissan leaf. Edit: They clearly had something wrong with their data for the 2019 Bolt, because they measured degradation at 1 year for both 2017 and 2018 which use the EXACT SAME BATTERY.
Even the Tesla data I have seen has had much more initial degradation than the Bolt. JavaScript is disabled.
Most of the Bolts on the lots have been sitting there for 6-9 months. Tesla Is Calling Model Y Owners For Roof Inspection After One Flew Off. I've been driving my 2017 Bolt for over 2.5 years. Tesla shrugs off pandemic as sales hit new record, Tesla profit doubles as car deliveries surge, Fisker Inc. and Viggo Sign Agreement for Future Delivery of 300 Vehicles to Support Next Generation Urban Mobility Growth, SuperCharge - new road-car based global electric motorsport series unveiled, Volvo's First Electric Car Will Cost $54,985, 'It just won't be so exhausting': Obama debuts his closing argument for Biden, ‘They responded by killing us’: Nigerians seek to end police brutality with #EndSARS protests, CalWood Fire Threatens Homes in Longmont, Colorado, Romney: 'I did not vote for President Trump', 'They only care about votes': As millions slip into poverty, voting may be the only leverage for a 2nd stimulus check. Also, I don’t believe GM would go to the trouble of putting that recommendation in the user manual if excessive heat (> 90*F according to them) affected battery life only within a few % points. Which calls the entire study's methodology into question. It is in for Li battery repair. Given its long range, very few Bolt EVs are likely to deplete the battery entirely, right down to zero capacity, which can also affect durability.
There are two things mentioned in this thread that I'm going to call myths unless someone can provide evidence to the contrary: More BEVs and more years in the market will give real world experience as to this generation of battery life. How interesting. Here's hoping for an "early return"! Do you know any tutorial how to set up torque pro with the bolt? If they said 0.1% I'd believe it because that's a real number, but a flat 0 IS impossible. Now, 26 months later, it has ~56 kWh usable. With the heat pump, I'm going to lose that cooling. I just looked at the battery capacity reading in Torque Pro and it is still showing 95% of nominal (56.9 kWh out of 60). You can use the heater to adjust mi/kWh. It’s a pure software limitation / Battery management issue. You are making the algo guess about the top 12%. Thank you for raising this important issue. CHECK OUT: Durable 2012 Chevrolet Volt: 300,000 miles, no battery loss, GM spokesman Fred Liguouri hints at that, telling CNet Roadshow via e-mail that only "under extreme circumstances" would an owner be likely to "see a 40-percent reduction in range over the course of the 8-year/100,000 mile warranty.". For the purposes of my previous post, the 20 bars had all gone away, so I must have been below 5%. No camper or utility mode on the Bolt to keep the power on indefinitely?
That's good news for potential Bolt EV buyers. If it's that post you are talking about, the problem was the way to calculate degradation that wasn't quite good. The Bolt is a great car, but it isn't THAT great. It was part of a lease fleet to San Diego. That is how I got my German Cityel also. Rather than estimated miles, what was your actual battery percentage in those situations? RedPoint5 - I've been reading a number of posts on Battery Thermal Management. Very frustrating to be ahead of the herd.... or is it? And that's where the Chevy Bolt EV's battery-capacity degradation warranty comes in. JavaScript is disabled. We’re the Largest Chevy Bolt EV Online Community and Owner's Club. Owners would compare results among those who had new cars versus older ones with high mileage. A 40-percent loss probably wouldn't; that would cut the 238-mile range to 143 miles. I just looked at the battery capacity reading in Torque Pro and it is still showing 95% of nominal (56.9 kWh out of 60). You can filter by age on cargurus or look at the manufacture date sticker inside driver side door. It had ~58 kWh usable versus an advertised 60 kWh usable. But we digress.).
I've been driving my 2017 Bolt for over 2.5 years. At 188 I got the low battery warning, then at 191 I got the request to go to low power. To estimate the amount of degradation, I compared kWh used versus the battery percentage displayed at the station, and I was able to create a timeline of total estimated battery capacity. Where they lack is drive train efficiency.
So, when I first got it, it's body and drive train were like new, and it had a 2016 battery in it. All that having been said, the next time I go buy or lease an EV, I'll have to consider whether the car was sitting on the lot during the summer heat. At 188 the GOM said I had 10 miles minimum. Their density and longevity is on par or better than Tesla. I'm fairly sure there was a flashing yellow bar (or actually two) at the bottom. We leased a Chevy Bolt in the fall of 2017 and have driven it 11,000 miles in the past 14 months. The 2017 Chevrolet Bolt EV, we should note, has liquid cooling and heating for its battery pack, complete with its own little radiator. 2017+ Chevy Bolt EV General Discussion Forum, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada.
10:35 Does that much degradation actually matter? In the FFE it would only take about 5 hours to drain the battery this way. It's fair to say that a 10-percent loss after 100,000 miles—which would cut the Bolt EV's rated range from 238 miles to 214 miles—would likely be shrugged off by owners. I've got a contractor coming in a couple weeks to install a ground source heat pump. Owner experiences with six years of Chevrolet Volt plug-in electric cars indicates good battery life. I'm pretty sure that you're mistaken. Odd, I just had the battery replaced in my Bolt, and the process you describe is not what was done in my case. I never did it myself, but I imagine you would need all of the windows open and it would help if the weather was cold. You can find all kinds of things that they have tried. All batteries in electric cars lose capacity over time, although generally at a much slower rate than the smaller, cheaper cells in your consumer electronics devices. I would worry more about the condition of the 12V battery than the Li one. Please enlighten me on where the actual battery percentage is displayed. On the lefthand side of the display there is a green battery-level indicator stretching the height of the lefthand edge (it went orange when you hit low). Now we just need to generate that 160 to 250 mile (depending on outside temp) test route that can predictably get you to a destination charger (home?) Regen is seemingly not counted. I went 3 miles after that. I own a Bolt and really love the car. Read the owner's manual!
I remember a post from about that old of someone saying his battery had 0% degradation which hadn't been well received. I know there is some dispute over the accuracy of that value, but I've noticed little to no real world degradation either. You're way ahead of most shoppers if you're at this level of evaluation. With the Bolt (and based on these threads) I don't see how a normal person can figure this out--although perhaps that's GM's intention. I was just thinking about that the other day. On the battery display it showed 54.4 Kwh used to go the 194 miles with an average of 3.6 miles/Kwh. Durable 2012 Chevrolet Volt: 300,000 miles, no battery loss.
Join to discuss sport mode, reviews, battery range and charging! I'm jealous.
However, I probably would not have gotten such a great deal on my Bolt had the dealer had it a shorter time. If someone measured a flat 0, their sample size and/or measurement methodology is deeply flawed/insufficient. But, hey, lawyers will be lawyers, right? Press J to jump to the feed.
2019 Bolt EV Premier, Nightfall Gray Metallic. A few years back, I bought a 2012 Miev, with 900 miles on it. People seem to forget that battery capacity is a variable that changes significantly with things such as pack temperature, discharge rate and discharge pattern. Anyway, It was beautiful and in great condition when it was moved out of San Diego and stored near Las Vegas, NV. I've been here. If it's been a few years—or a few decades—you may be surprised how frustrating they are if you're actually searching for specific information. Not so much with Teslas' EVs.
There is nothing at all posted at https://www.geotab.com/blog/ev-battery-health/ about sample sizes per vehicle or what methodology their tool uses to calculate anything, such as how they normalize for differences in usage (lightly driven vs. frequently driven) or differences in environment/temperature.
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