How good/bad are these OBDZero numbers?

[ajay16]

Apologies as I'm quite new here, less than a week into my ownership of a 2010 here in the UK, it has 22k miles on the clock.
The battery has 9.7kWh at full charge.

Here are my cell readings from OBDZero.

To my eye it looks like fairly even degradation across most of the pack?

 

[MickeyS70]

Apologies as I'm quite new here, less than a week into my ownership of a 2010 here in the UK, it has 22k miles on the clock.
The battery has 9.7kWh at full charge.

You may be able to increase that capacity, run CAP2 on OBDZero (when the battery is nearly empty) to see what the current value is.

To my eye it looks like fairly even degradation across most of the pack?

What one can see is that the pack is well (top) balanced, which is a good start, do the same again when the ‘fuel gauge’ is nearly empty.

To determine degradation (SoH) you need to look at capacity:

SoH (based on the 9.7kWh) approx 70%, i.e. the battery ‘lost’ 30% of its initial value (14kWh, useable), not bad for a 15 year old EV (low mileage helps).

 

[ajay16]

Cheers
I didn't think it was too bad, but equally am learning the ropes.

Will run it down and try the CAP2.

 

[MickeyS70]

Will run it down and try the CAP2.

For best results consider running OBDZero on a dedicated device as the slightest interruptions (screensaver, phone calls, texts etc) will stop CAP2 calculations. Using an external power bank for the phone/tablet is also advisable.