Battery Degradation Curves and Care Information.

[JimB]

Found this in an Outlander phev thread and whilst the list of cars doesn't include MG some forum members may find the information useful.

How Long do Electric Car Batteries Last? What 10,000 EV Batteries Tell Us | Geotab

How long does a typical EV battery last and is there a measurable difference between make and model? Learn how to prolong your EV battery life here.

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[chromeskull]

Well mines beaten the leaf already at 15 months old it's at 98.89% soh compared to the leafs 90% at the same age.
Hopefully it will continue along the low degradation line.

 

[Headgas1]

Yep mine is 17 months old and it’s roughly 98.77% il take that ???

 

[Ron61]

Well mines beaten the leaf already at 15 months old it's at 98.89% soh compared to the leafs 90% at the same age.
Hopefully it will continue along the low degradation line.

The leaf has doesn't have battery cooling.

 

[EVsince2016]

My 30kw LEAF was >93% at nearly 3 years whereas my 40kw was close to 90% after 2 years. After roasting the battery twice this summer I guess it's below 90%

The LEAF is unique with no proper battery management and just air cooling.

 

[chromeskull]

Well mines beaten the leaf already at 15 months old it's at 98.89% soh compared to the leafs 90% at the same age.
Hopefully it will continue along the low degradation line.

Forgot to add its now done just over 18,000 miles.

 

[rpannell]

Forgot to add its now done just over 18,000 miles.

I think that the first 3-4% of battery degradation is hidden on the MG - i.e. it effectively starts at 103% but displays 100% until it reaches <100%. My MG showed 100% until about 15 mts old then started to lose around 0.3-0.5% per month thereafter.