VW ID.3

Anyone used go charge charger in Arklow? Supposed to be 22kw and I am pulling only 3kw?

Some recent statistics from my drive to dunmanway and back last sunday. 149km in total, mainly local roads and some N roads driving at constant speeds not exceeding 90kmh. Very low consumption of 12.2kWh/100km but took 45% of Soc. So 12.2x 1.49 = 18.2 kWh. Range estimate at 100% - 331km.

Had to do some local driving after that on local N roads, Cork hills, 100kmH. Soc dropped to 26% (-9%), drove extra 36km. Total for the day 185km, 12.5kwh/100km consumption, soc drop 54%. used a grand total of 12.5x1.85 = 23.1 kWh. Range at 100% - 343km. Battery capacity estimate - 42.7kwh.

Charged overnight from 26% back to 80% using 26.75kWh. Batterylife estimated that charging loses for 5.5kW were ab 8.8% and for 11kW ab 7.5% so let's say for 1ph 7.4kW the loses are 8%. This give me a figure of 24.6kWh charged. So less thsn 10% difference from 23.1kWh calculated above. Ballpark figure for battery capacity 24.6/0.54 = 45.6kWh. I know there are a lot of assumptions but real life data shows that the battery is well below 50kWh. Battery life did a recent test with Aviloo which gave him a figure of 50kWh (strangely enought they were claiming that the starting batary capacity was 54kWh rather than 58kWh which artificially reduced the degradation from 14% to 7%). My back of envelope calculations that degradation could be as high as 20% after less than 2 years and 34k km. Not great... especially when classic Ioniq, i3, kona/eniro,tesla have almost no degradation of thier batteries. I beg there will be another VW scandal in the future similar to dieselgate.

Rant is over.

Piano black for the win. I will wipe it down tomorrow:) P.S. the outside is def worse:)

70% / 8 years / 160k km. 70% of 58kWh is 40.6kWh so I'm not there yet. One thing I'm trying to understand is how you can get VW to give a health report on you battery? So far they just saying the battery is ok w/o any data to back it up.

no i dont. i think charger was faullty as one side didnt work at all

A quick update on my battery situation. I want to thank @KCross for volunteering 1h of his time to meet me and read some battery stats with his obd scanner.

After a quick scroll through battery cell voltages we found at least 3 cells which had lower voltage that normal 4.1 - 4.09 V. Namely, n17 (4.02 V) and n17 (4.05 V ) in photo1 and n63 with 4.0V in photo 2. The last one is the one causing all the problems as the imbalance close enoughto 0.1 V.

The other strange thing was that the max SOC reported by the app was 90.8% which was 4% lower than the displayed soc (photo 3 vs 95% photo 4). I thought that actually SoC is usually lower due to the buffers? I'm not 100% what the min soc of 81% is but maybe its the soc calculated from the weakest cell?

The biggest "surprise" came in photo 4. The maximum energy content of the traction battery was reported to be 53.2kWh (still 9% degradation is we to believe the new battery was 58kWh) while the HV battery content was only 42.1kWh. If i understand correctly, the latter number is the energy available for use. 42.1kWh at 95% is 44.3kWh at 100% which is almost half way figure between capacities of 42.7kWh to 45.6kWh which I calculated in my previous post. So maybe I'm not crazy after all and I'm indeed missing 10kWh due to faulty cells🤔

Dunno, I've done 52k kms in 14months. No noticeable drop in range at all. Are you sure it's reporting the battery capacity properly?

An yes I haven't actually plugged anything in to see my capacity.

On a side note I'm booked in for at least a day, if not 2, for the 2.4 update.

VW (in Germany) have an ‘official’ test they can perform. I haven’t heard anyone here getting this done but might be worth asking

@ewj1978 I'm the same, no drop in range for me and approaching 2yrs old. I get consistent range from my car and the cells are balanced and the GOM is reasonably accurate and doesn't show any mad figures.

Its not the same on @Rusky rusky car though and our cars are identical and have almost the same reg numbers so very close in production date.

For example, at 95% his car shows a range of almost 400km. I've never seen that on mine but I get more range from my car than he does as his GOM is all over the place and drops like a stone when he drives it. He also mentioned that he sees it dropping when he turns the car on, without even driving it!!.... clearly he has faulty cells and the BMS is struggling to manage that.... the OBD data clearly shows the weak cells.

He has at least 3 or 4 cells that are significantly out of line with the others and that was with the car having being charged to 100% a few hours earlier so they should have been quite close. A 110mV+ differential is way off the mark and is likely to be way more than that if he drove it down to 10% SoC where the weak cells would get further exposed.

His battery isn't suffering time/use based degradation as such. What he has are a few weak/faulty cells (from day 1) which is dragging the entire pack down with it. The BMS has to work to protect the weakest cells so the pack is only as good as the weakest cell. If those cells were replaced it would be fine.

How VW treat him now will be interesting. Do they want to keep goodwill and not have people complaining of faulty batteries on their critical MEB platform or will they play hard ball and cite the 70% warranty... I'd say Rusky has somewhere between 75-80% so not quite there yet but it will surely hit 70% by the 8yr mark so they should just step up and address it now before it gets worse.

@Mr Q I am using a Vgate dongle that I had from my Leaf many years ago and I am using the CarScanner app.

Could VW replace these individual cells or is it a sealed unit & a full battery change would be needed?

They could replace the cells (or more likely the modules that the cells are in) but being a big OEM they might also just replace the entire battery and get it shipped back for further analysis and reconditioning...

i.e. your typical VW dealer probably doesn't know how to change cells but will know how to swap out the entire battery.

..but who knows what they will do here... they could tell him to get lost!

Do you mean to stop the car slowing on its own approaching junctions and different speed zones when in D mode? I think that is the Eco Assist option, it is off on mine but would need to check how I done it and which option it was.

I had this in our leaf. Nissan refused to acknowledge that there was a problem, even though the car was within warranty (some cells were dragging down the overall performance).

Indy dealer tried to fix it i.e. replace the weak cells, but ran into problems so it’s not an easy thing to do. Long story, couldn’t fix it and ended up trading for something else.

From what I’ve seen of the VW packs I’d be surprised if a dealer here would try to sort individual cells.

VW board has ousted Herbert Diess as CEO. Mostly not because of the continuing software problems. He is to be replaced by Oliver Blume, currently head of Porsche.

https://www.ft.com/content/f73ee239-8c2a-4344-b042-2d78c646506b