dspencer12345

Established Member
Joined
Sep 16, 2023
Messages
88
Reaction score
42
Points
31
Location
UK
Driving
ZS EV
Hi everyone. Just had the second service on my ZS EV 2023 plate, and having had 100% HV battery recorded after the first service, I was shocked to see it had dropped to 97% in the second year, with similar mileage, about 8000 miles per year, 16500 at the time of the service.

Should I be concerned, or is this normal please?
 
Hi everyone. Just had the second service on my ZS EV 2023 plate, and having had 100% HV battery recorded after the first service, I was shocked to see it had dropped to 97% in the second year, with similar mileage, about 8000 miles per year, 16500 at the time of the service.

Should I be concerned, or is this normal please?
Our usage case was similar to yours.
I witnessed the same level of degradation on both models of the ZS EV over the 5 years we owned both cars.
No marked degradation until the car reached around 18 - 24 months old, then one morning after charging overnight, the predicted range at 80% SOC suddenly dropped and lower figure became the norm then.
Degradation had clearly started, but when the car went in for its annual services, I asked for a battery health check report.
Yes - It confirmed my thoughts.
Expect there to be another drop next year, if it follows the same pattern that both of our cars did.
It is less of a concern on the later LR model of course, because the pack is much larger than the one in the original ZS EV.
Honestly, I am fully expecting our new S5 to follow down the same path, as they share the same chemistry NMC packs.
Oh - Just for the record, we never charged on a rapid charger and the majority of the time we only charged to 80% SOC from our home wall box ( Given your low milage, probably the same as yourself ).
When choosing an EV it’s important that you include some battery degradation losses into your mileage / charging schedule requirements, especially if you intend to keep the car for a while.
If the car is on a lease or PCP deal, then it’s very likely you will not be worried about any degradation issues tbh.
Regular use of rapid chargers will give you no concerns either.
Some EV’s tend to report lower battery degradation figure over a longer period of time.
This maybe down to the quality of the pack or a larger buffer at the top of the battery, hiding the degradation 🤷🏻.
 
Our usage case was similar to yours.
I witnessed the same level of degradation on both models of the ZS EV over the 5 years we owned both cars.
No marked degradation until the car reached around 18 - 24 months old, then one morning after charging overnight, the predicted range at 80% SOC suddenly dropped and lower figure became the norm then.
Degradation had clearly started, but when the car went in for its annual services, I asked for a battery health check report.
Yes - It confirmed my thoughts.
Expect there to be another drop next year, if it follows the same pattern that both of our cars did.
It is less of a concern on the later LR model of course, because the pack is much larger than the one in the original ZS EV.
Honestly, I am fully expecting our new S5 to follow down the same path, as they share the same chemistry NMC packs.
Oh - Just for the record, we never charged on a rapid charger and the majority of the time we only charged to 80% SOC from our home wall box ( Given your low milage, probably the same as yourself ).
When choosing an EV it’s important that you include some battery degradation losses into your mileage / charging schedule requirements, especially if you intend to keep the car for a while.
If the car is on a lease or PCP deal, then it’s very likely you will not be worried about any degradation issues tbh.
Regular use of rapid chargers will give you no concerns either.
Some EV’s tend to report lower battery degradation figure over a longer period of time.
This maybe down to the quality of the pack or a larger buffer at the top of the battery, hiding the degradation 🤷🏻.
Hi. Thanks for this. Really good to know, as my use seems almost identical to yours. Likewise I use the Pod home charger almost all the time, charging to 80% and never going below 20%, with only occasional high speed charging when doing a 500 mile journey there and back, travelled twice per year.
Mine is the long range version, forgot to say, so not a disaster if it loses a few percent. I wonder how much it will lose by the time I sell it, as I'm planning to keep it 7 years!
 
I wouldn't be worried about that @dspencer12345, the average EV battery degradation (according to the internet) is 1.8-2.3% per year, so 97% after 2 years seems acceptable.
Saw that too, but was concerned it had lost 3% in just one year, so could potentially lose 20% before I get rid of it in 5 years, assuming the rest of the car lasts that long 😆
 
Saw that too, but was concerned it had lost 3% in just one year, so could potentially lose 20% before I get rid of it in 5 years, assuming the rest of the car lasts that long 😆
It was probably rounded up to 100% for the first year, and rounded down to 97% in year two, so it only dropped less than 2% in year 2 😊
 
Support us by becoming a Premium Member

Latest MG EVs video

First Look: MG IM5 & IM6 – Premium EV Saloon & SUV Unveiled at Goodwood!
Subscribe to our YouTube channel
Back
Top Bottom