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.

EV Battery Health Insights: Data From 10,000 Cars | Geotab

Geotab research reveals how EV batteries can last 20+ years with proper care. Learn key insights and best practices to maximize EV battery life and performance.

www.geotab.com

 

[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.