If you look at voltage and current, you see that the lower power has two components: somewhat lower voltage and lower current. I think the lower voltage might be related to battery degradation or misaligned cell voltages. This contributes to a small difference. The larger part of the difference is due to lower current. This is regulated by the BMS based on different conditions of the battery (including temperature). Maybe it dipped down, because the preheated battery started to "overheat" and therefore charging was slowed down by the BMS. It is just speculation from me, so it might not be fully correct.
To me it more likely seems to be a battery temperature related thing. It started 2% lower, so the battery must have been heated up more at the same level. It also could be that the cooling fins are dirty and so the cooling capacity is lower. Would be interesting to also monitor the battery temperature to see if there's a correlation.
Modules of EVs can be updated without you getting notified ! Even BMS. (no inside info for VW on this) Check firmware version before drawing any conclusions.
Plotting percent soc against battery voltage might reveal if the car is using a changing mapping of its capacity estimate: a higher final voltage (comparing new against old at either 80% or 100% reported state of charge) might tell you that the car is giving you access to the 'reserve' capacity at the top end to mask the capacity degradation. Really you need to use the same charger each time for a good comparison.
I mean i like your comparisons as a rough guide but it just seems to me there are so many variables - SoC, the temperature, the charger, that you cant control that this sort of conclusion seems tenius
Fast charging performance is supposed to degrade gradually over time or with increased DC charging cycles. Especially for those with extremely high power charging (>300kw), a significant degrade can be observed.
Does anyone here know why it’s not possible to start the cabin heater from the app in a VW ID.4 Pro 2024 when it’s below freezing outside? Both I and a friend with the same car model are experiencing the exact same issue. Has anyone managed to fix this bug?
I think using DC is going to kill the battery over the years, I charge home on the 2025 ID4 and will only charge DC if absolutely necessary or on a holiday trip, but thanks interesting video👍 have a good one
Even the Panasonic battery which European Teslas don't have has less average: ua-cam.com/video/oLMvar2VDKQ/v-deo.html The LG battery which is in European Teslas is worse than this.
Who would regard a new car as an investment? Anyone with any sense would fund the depreciation by leasing, it's a fixed cost to rent it. Couldn't care less about the resale value, not my problem.
@@iancallow3364 Leasing, you're still paying for the high initial deprecation, plus you prob. have a ridiculously low milage allowance. Only way to mitigate it is to keep the car until maintenance issues become untenable, unless you buy secondhand.
Might have been the BMS along with cooling of the battery maybe it was hitting a peak temperature so pulled back on the level of power.
If you look at voltage and current, you see that the lower power has two components: somewhat lower voltage and lower current. I think the lower voltage might be related to battery degradation or misaligned cell voltages. This contributes to a small difference. The larger part of the difference is due to lower current. This is regulated by the BMS based on different conditions of the battery (including temperature). Maybe it dipped down, because the preheated battery started to "overheat" and therefore charging was slowed down by the BMS. It is just speculation from me, so it might not be fully correct.
To me it more likely seems to be a battery temperature related thing. It started 2% lower, so the battery must have been heated up more at the same level. It also could be that the cooling fins are dirty and so the cooling capacity is lower. Would be interesting to also monitor the battery temperature to see if there's a correlation.
At 7:25 your chart says "ID.3 2024" instead of ID.7 :)
isnt it because of the cold?
Modules of EVs can be updated without you getting notified ! Even BMS. (no inside info for VW on this) Check firmware version before drawing any conclusions.
Plotting percent soc against battery voltage might reveal if the car is using a changing mapping of its capacity estimate: a higher final voltage (comparing new against old at either 80% or 100% reported state of charge) might tell you that the car is giving you access to the 'reserve' capacity at the top end to mask the capacity degradation.
Really you need to use the same charger each time for a good comparison.
I mean i like your comparisons as a rough guide but it just seems to me there are so many variables - SoC, the temperature, the charger, that you cant control that this sort of conclusion seems tenius
Maybe different weather conditions
Fast charging performance is supposed to degrade gradually over time or with increased DC charging cycles. Especially for those with extremely high power charging (>300kw), a significant degrade can be observed.
Does anyone here know why it’s not possible to start the cabin heater from the app in a VW ID.4 Pro 2024 when it’s below freezing outside? Both I and a friend with the same car model are experiencing the exact same issue. Has anyone managed to fix this bug?
I think using DC is going to kill the battery over the years, I charge home on the 2025 ID4 and will only charge DC if absolutely necessary or on a holiday trip, but thanks interesting video👍 have a good one
your sampling is to small, not statistically significant, try 20 times and see how it goes….
Buy a Tesla😊
A Tesla charges worse than this on average.
Even the Panasonic battery which European Teslas don't have has less average: ua-cam.com/video/oLMvar2VDKQ/v-deo.html
The LG battery which is in European Teslas is worse than this.
It also lost half its value, great investment!
Cars in general are a bottomless money pit. Nothing ages as poorly as cars.
Just like my Tesla
Who would regard a new car as an investment? Anyone with any sense would fund the depreciation by leasing, it's a fixed cost to rent it. Couldn't care less about the resale value, not my problem.
Unless you exceed the lease mileage limits.
@@iancallow3364 Leasing, you're still paying for the high initial deprecation, plus you prob. have a ridiculously low milage allowance. Only way to mitigate it is to keep the car until maintenance issues become untenable, unless you buy secondhand.