MG4 Battery Health

[fatih]

Greetings to everyone from Turkey. After 29000 km, my battery health was 95.54%. Is this situation normal? My vehicle is MG4 standard range LFP. I usually charge it with 2.7 kW in my parking lot.

 

[Rolfe]

Google translate is your friend.

ETA: Thanks, Alb. I was on my phone and couldn't do it.

 

[siteguru]

At my first service with ~5k miles (~8k km) the SOH was recorded as 95%. This is typical for an LFP battery pack ... higher initial degradation and then this flattens out in subsequent years.

(Courtesy of Google Translate):

~5 bin mil (~8 bin km) ile yaptığım ilk bakımımda SOH %95 olarak kaydedildi. Bu, bir LFP pil paketi için tipik bir durumdur... başlangıçta daha yüksek bozulma olur ve daha sonra bu durum sonraki yıllarda düzleşir.

 

[rtenterprises]

how did you find health statistics?

 

[siteguru]

Car Scanner app with an OBD2 dongle might do it. Otherwise the dealer should be able to read it.

 

[Buster72]

how did you find health statistics?

The dealer should have this when the car is being serviced.

 

[BryG]

The dealer should have this when the car is being serviced.

Yeah, my dealer recorded my SoH as 51%. That's not correct but it won't do my residual value much good. Getting it tested soon.

 

[Martinonline]

I think the dealer is confused and recorded the SOC. If your car had an SOH of 51% it needs a new battery pack.

 

[Helena999]

We had done 15k miles at our service and were told our battery health was still 100%, so I'm surprised yours has degraded after so few m.

 

[BryG]

I think the dealer is confused and recorded the SOC. If your car had an SOH of 51% it needs a new battery pack.

It's not 51%, the range is still good. It wasn't the SoC either. Don't know where they got it from.

 

[Rolfe]

Yesterday I was told mine is 100%. One year and 8,000 miles.

 

[DixieTGS]

It's not 51%, the range is still good. It wasn't the SoC either. Don't know where they got it from.

If they were using a consumer OBD2 device with car scanner say, then some setups can give occasional misreads. The car scanner help suggests turning off all other Bluetooth connections on the phone for example. In my case changing one of the timeout settings improved the reliability of some of the values (others were always good and yet others stayed bad).

Having said that I really hope an MG garage would always use MG kit, so hopefully this is not your problem.

 

[BryG]

If they were using a consumer OBD2 device with car scanner say, then some setups can give occasional misreads. The car scanner help suggests turning off all other Bluetooth connections on the phone for example. In my case changing one of the timeout settings improved the reliability of some of the values (others were always good and yet others stayed bad).

Having said that I really hope an MG garage would always use MG kit, so hopefully this is not your problem.

My point is that they shouldn't write 51% SoH and tell me the car is fine.

 

[Rolfe]

It would have been entirely appropriate if you had thrown a strop then and there and demanded a replacement battery under warranty. That might have concentrated a few minds.

 

[tsedge]

My point is that they shouldn't write 51% SoH and tell me the car is fine.

It is probably just a simple mistake.

 

[Rolfe]

Almost certainly. But it seems pretty careless or ignorant to have passed over this obvious mistake and told the owner the car was fine.

 

[Apple4]

1st service just done by Arnold Shark. Been told SOH is 100% apparently.

 

[Bam Bam]

I think the dealer is confused and recorded the SOC. If your car had an SOH of 51% it needs a new battery pack.

Or even they recorded the total kWh. 100% on the SR is 51kWh after all.

 

[siteguru]

Total usable is 50.8 kWh.

 

[BryG]

Update: SoH is 99.3% and the dealer apologised for the error.