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by djbrh
Sat Oct 16, 2021 6:51 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

...I had no idea there was head and tail buffers, but I don’t think that changes the actual problem, either. Yes and no. BMW is around 5% at the top and slightly more at the bottom, but this is in line what other manufacturers do. Technology evolves, and for example, VW uses a newer BMS that reserv...
by djbrh
Sat Oct 16, 2021 2:50 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

If I’m understanding Art’s post correctly, my 80% number is wrong, but it still sounds like the overall theory is correct. And I had no idea there was head and tail buffers, but I don’t think that changes the actual problem, either. So it’s some larger percentage and it’s sort of in the middle inste...
by djbrh
Thu Oct 14, 2021 1:16 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

I don't know if I agree with that. What proof is there that rapid battery degradation will occur because they allow more useable battery? Because that’s how this particular battery technology works. It’s why Tesla recommends NOT charging past 80% unless you NEED to. It’s why you’re not supposed to ...
by djbrh
Wed Oct 13, 2021 5:06 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

I don't know if I agree with that. What proof is there that rapid battery degradation will occur because they allow more useable battery? Because that’s how this particular battery technology works. It’s why Tesla recommends NOT charging past 80% unless you NEED to. It’s why you’re not supposed to ...
by djbrh
Wed Oct 13, 2021 5:02 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

Its irrelevant. All that matters is, if you start quoting capacity according to the 18.8 kwh (available) you must finish measuring the same. You cannot start measuring the available and then finish measuring relative to the 22.2 kwh total capacity. My battery capacity is down to 65% original, but w...
by djbrh
Tue Oct 12, 2021 8:03 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

I have just had the same issue. Battery capacity down to about 65% of original (2014 22kwh battery version) as calculated for each trip and also on the Kappa Max feature on the computer. BMW were very reluctant to deal with this, but eventually did. They took the car for 6 days and after 2 days ask...
by djbrh
Sun Oct 10, 2021 4:23 pm
Forum: Technical BMW i3 Discussions
Topic: Replacing Freon after HV battery swap
Replies: 2
Views: 2659

Re: Replacing Freon after HV battery swap

So other than handling the AC system and doing the physical swap, what else had to be done to make it work?


—Donnie
by djbrh
Mon Aug 09, 2021 2:31 pm
Forum: Technical BMW i3 Discussions
Topic: Software update needed for HV battery capacity check
Replies: 27
Views: 2180

Re: Software update needed for HV battery capacity check

For the guy who said they wanted to do an EME replacement first, that sounds like what Fiat is doing on owners with failing battery packs on 500e’s. They’re claiming the inverter is bad, not covered under warranty, and for $7k you can get that replaced and THEN they’ll be able to tell *if* the batte...
by djbrh
Thu Mar 25, 2021 9:28 am
Forum: News and Main BMW i3 Forum Discussions
Topic: i3 HV Battery Upgrade
Replies: 31
Views: 9241

Re: i3 HV Battery Upgrade

Before I bought my i3 I thought “man, the Rex is awesome and is perfect for this kind of use” and after I bought my Rex-i3 I’m like “man, that Rex is dumb and I hate it because I’m constantly worried about whether I run it often enough to keep it from breaking and I really wish I could remove it.” Y...
by djbrh
Fri Feb 19, 2021 4:55 pm
Forum: General / Main i3 Owners Forum
Topic: 2014 i3 radio question
Replies: 4
Views: 1314

Re: 2014 i3 radio question

To close this out, it was me being dumb. It just wasn’t obvious to me that the Preset page, when there are no presets yet, is an empty list. *sigh* But yes, once I added some presets it all became obvious again.


—Donnie

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