[cruzer666]

Cool beans.

Any suggestions on how to get an invitation to beta test from the developer?

Download TestFlight app on your iPhone, open the app to a point where it’s asking for a code. Then close it and click on the link on the OP.

 

[dojoman]

It’s part of the supported list, could be because it’s a Beta app try a hard reset on the phone and trying again but likely an issue with BimmerFlow.

I’m going to submit a bug report.

 

[dojoman]

Cool beans.

Any suggestions on how to get an invitation to beta test from the developer?

You don’t. Just click link in this thread it will let you use the app right away.

 

[Clerkpalmer]

I'm not really sure how helpful this information is to us. I suppose if you can "prove" your battery hasn't degraded, you could try to get more money for the car when you sell it. If your battery has degraded, you probably aren't going to want to advertise that. Furthermore, given the CarData stuff, it seems like the information isn't reliable yet (or maybe ever). Just not sure I want to know. If your battery has degraded faster than average, BMW isn't going to do anything about it anyway. So your just pregnant with information you probably wish you didn't have and you'll be frustrated that you got a bad battery (bad luck of the draw) compared to others which is in fact a thing.

 

[ssh]

Perhaps the most interesting finding so far is the difference between @cruzer666 and me since I charge to 100% more frequently... and I have seen greater degradation than he has. It's going to change some of my behavior as a result (fewer 100% charges even when I go up to Copper).

I suspect I have more DCFC than he does, too, but we haven't compared that. I'm a bit below the curve and he's above it.

 

[cruzer666]

CarData shows a BMS estimation of battery capacity, not necessarily battery health. BimmerFlow is using all historical charging and trip data available in the car as well as high voltage battery data and shows a more accurate battery health number. Likely the app will mature to show different other metrics, like AC/DC charging times.

Of course owners that charge to 100% consistently and go to 0% frequently will try to discredit this data if unfavorable since it makes their car less desirable.

I said this when I got the car over a year ago, we will get the ability to show battery health, and here it is.

 

[me1]

What does your statement that it is consistent with CarData mean, since CarData isn't consistent with itself?

CarData and BimmerFlow generated in the same state (without driving or charging) show 78kWh.

 

[kindofblue]

Except that @cruzer666 and I have cars which are about the same age, about the same mileage, and I have many more 100% charges than he does and I show more degradation. Yes, it's a sample of 2, but that's not none.

Well isn't that because you drive up out of Boulder/Denver to go skiing with quite a bit of elevation change?

 

[bognar67]

Just joined. Thanks for the opportunity. Fast connection, user friendly structure, well done.
Was looking for a software like this, very happy.

 

[ssh]

Check that error!

 

[ssh]

Well isn't that because you drive up out of Boulder/Denver to go skiing with quite a bit of elevation change?

Yes, I charge to 100% for that journey, but now I'm considering perhaps charging to just 95% to see if that makes a difference. I'm over 22k miles, so have a lot to go off. 408 charges, 91 full charges.

 

[kindofblue]

I go up and down the mountains all the time, I am literally surrounded by mountains

I stand corrected.

 

[bognar67]

Check that error!

 

[bognar67]

I'm wondering if anyone that just took delivery if they're willing to share results.

Would be happy to do, but the software was not available that time, 8 weeks ago... Anyway my low milage can be a relatively good reference (4026km/2,516mi at reading).
All together that could be a useful idea to collect the data. We are doing it, one of us handling it (making a structure) on other brand's forum. Collected already lots of data and able to understand our cars better as time is passing by.

 

[bognar67]

I'm not really sure how helpful this information is to us. I suppose if you can "prove" your battery hasn't degraded, you could try to get more money for the car when you sell it. If your battery has degraded, you probably aren't going to want to advertise that. Furthermore, given the CarData stuff, it seems like the information isn't reliable yet (or maybe ever). Just not sure I want to know. If your battery has degraded faster than average, BMW isn't going to do anything about it anyway. So your just pregnant with information you probably wish you didn't have and you'll be frustrated that you got a bad battery (bad luck of the draw) compared to others which is in fact a thing.

Easy. You will not need to advertise. Used car buyers will not buy 2nd hand electric cars without a possibility to read out these kind of stats at least SoH. You can say NO, but will walk away to the next owner who plays with open cards.
SoH is a key factor, will become standard soon.
That is an other question how reliable these kind of readings but seem correct with 1-2% accuracy and will become more and more accurate by the time as software developers learn more.
And yes, SoH percentage will influence the value of the car when the time comes to sell. A lot.

 

[david594]

I think I might be winning? Or losing?

 

[Clerkpalmer]

Easy. You will not need to advertise. Used car buyers will not buy 2nd hand electric cars without a possibility to read out these kind of stats at least SoH. You can say NO, but will walk away to the next owner who plays with open cards.
SoH is a key factor, will become standard soon.
That is an other question how reliable these kind of readings but seem correct with 1-2% accuracy and will become more and more accurate by the time as software developers learn more.
And yes, SoH percentage will influence the value of the car when the time comes to sell. A lot.

What are you basing that these are accurate by 1-2 percent? We have people here showing wild swings in readings. Sorry this may be a fun little toy but until it’s proven accurate that’s all it is. What happens to the guy that did everything right, kept SOC at 50 percent never charged to 100 percent and never fast charged that unfortunately had higher than average degradation? He can’t sell his car? He has no recourse? I don’t think battery health readings are anywhere near reliable or ready for use by the common purchaser. And it opens up a Pandora’s box of problems for the manufacturer who may start dealing with significant complaints or class actions over battery degradation or battery packs that were short of capacity at delivery. If we are gonna test battery health on the used market shouldn’t we make the manufacturers prove capacity is 100 percent at delivery? A lot of the variance is from original packs that didn’t meet claimed capacity on day 1.

 

[ssh]

I think I might be winning? Or losing?

Some more proof that this isn't calendar time. 😉

 

[david594]

Some more proof that this isn't calendar time. 😉

I was struggling with the iphone upload. Screenshots are added. Today is the 1 year anniversary with the car also.

 

[Clerkpalmer]

Some more proof that this isn't calendar time. 😉

Unless we know capacity at delivery it isn’t proof of anything.