Battery degradation on Car Scanner

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Cosmyc
Posts: 352
Joined: Fri Jul 08, 2022 6:08 am

Post by Cosmyc »

So the Car Scanner app got a profile update for the Nissan Ariya and now it shows a lot more parameters than before, including all module battery temps, all cell battery voltages and more. Among those there's a "traction battery condition" one that seems to refer to degradation reported by the BMS and also another one that says "energy measured by BMS".

In my case the first one says 99.99%, and the second one says 86,63kWh, using this second parameter as the worst case scenario :P when fully charged which would mean less than 1% of degradation compared to net capacity (87kWh).

I couldn't measure this when the car was completely new so I don't know was its first state, taking into account the massive buffer the Ariya has, especially the big battery one, that now mine has 1.5 years and 15.000 miles and that it has done less than 10 quick charges at 50kW and all rest AC charging at 5kW and the SoC hovering usually around 30%-70%, I suspect the ~1% degradation seems about right.

Can anyone check their too for reference?

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karltk1
Posts: 343
Joined: Wed Oct 05, 2022 7:14 pm

Post by karltk1 »

Will test mine at some point. Although I charged at home the other day and it stopped at 99%. First times it's done that.
ashleycarr
Posts: 156
Joined: Fri Jun 10, 2022 4:39 pm

Post by ashleycarr »

I've had mine stop at 99% too but running the battery down and then recharging till full usually has it saying 100% again. As I understand it the BMS rebalances the battery so occasional 100% charging is to be desired.
karltk1
Posts: 343
Joined: Wed Oct 05, 2022 7:14 pm

Post by karltk1 »

Just scanned my car with the experimental Aryia/E-Tech profile. Didn't get any error code even archived but gave good detail on the traction battery etc. battery at 99.99% which is good after 2 years and 15k miles. Although had a weird reading on battery milage or usage. It's read over 911000 Kms? Is this perhaps milage left for warranty purposes perhaps?

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Cosmyc
Posts: 352
Joined: Fri Jul 08, 2022 6:08 am

Post by Cosmyc »

Some of that data is still bad formatted due to the profile still being experimental, it will improve over time, there are also some parameters with wrong units or misplaced decimals.
karltk1
Posts: 343
Joined: Wed Oct 05, 2022 7:14 pm

Post by karltk1 »

Cosmyc wrote: Sat Aug 10, 2024 1:28 am Some of that data is still bad formatted due to the profile still being experimental, it will improve over time, there are also some parameters with wrong units or misplaced decimals.
Thanks for the info.
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