What's the effect on battery life of regularly charging to 100%

[meincranbourne]

Why not do what I do . Charge to 90% , gives you another 25 miles of range and still leaves a healthy buffer below 100% . You are using the car after the charge so not leaving it at a high state of charge so everything will be fine.

It also gives somewhere for any recouped power to go from the brakes.

 

[AndyL61]

It also gives somewhere for any recouped power to go from the brakes.

TBH , regen still works at 100% but at a lower level . It doesn't take long for it to go back to normal as the regen is no where near the power you are using when driving.

 

[melvinolotus]

My wife has a 145 mile round journey for her three days a week commute in an MG Trophy LR (61kw battery). We have been charging to 80% in line with recommendations to preserve battery life. But now that winter is coming she is experiencing range anxiety. I say don't worry but that is easy for me to say as I am not experiencing what she is. Today, for example, she was limiting her speed to around 50mph on roads that are 70mph to ensure she had a decent margin of charge to get her home. When she got home she had 12% left (i.e. she was achieving 3.5 miles per kw and had a decent margin to spare) which would be fine if she wasn't having to limit her speed. Limiting her speed in this way is not at all ideal as it prolongs an already long working day so I think she may have to revert to 100% battery charging. Does anyone have any information or evidence on the impact on battery life of 100% charging?

p.s. she is driving in energy saving mode, max regen etc.

This is one of the reasons I bought the SE, you can charge it to 100% all the time and it’s lighter improving handling

 

[LenEV2016]

This is one of the reasons I bought the SE, you can charge it to 100% all the time and it’s lighter improving handling

It's only 16 kgs lighter, so will have minimal impact on handling

 

[tsedge]

This is resurrection of an old thread!

Just charge your car to whatever level you need to use and don't worry about it.

The SR is quicker than the LR but that is mainly gearing, not weight.

 

[melvinolotus]

It's only 16 kgs lighter, so will have minimal impact on handling

I didn’t know the exact weight difference, cheers

 

[Corindikev]

The NMC charge to 80% unless you are going on a long trip advice from MG and many other manufacturers seems to be largely a myth. The only issue is that don't charge to 100% and leave the vehicle fully charged for weeks on end, otherwise there will be little effect on the batteries performance and longevity.

The main problem is that it takes a lot more time to charge from 80% to 100% than it does from 40% to 80%.

The same seems to be the case using fast DC chargers. Some owners who charge almost exclusively at fast DC chargers have not noticed much battery performance issues at all.

One Tesla Model S (I think) owner in Australia got to 666,666 km & the car reported a battery problem & Tesla replaced it under warranty.

 

[T1 Terry]

There was a report from a Tesla owner on the AEVA forum, regarding his Tesla charging taking longer after a few yrs of always rapid charging ..... It seems it was a Tesla programmed thing to protect cycle life/warranty claims ..... they cleared it over the air at a dealership and we never heard anything more about the problem ....
I'm guessing it was company car, so swapped out after 4 yrs or what ever, so not long enough to find out if there was a long term effect or not ......

T1 Terry

 

[T1 Terry]

This is resurrection of an old thread!

Just charge your car to whatever level you need to use and don't worry about it.

The SR is quicker than the LR but that is mainly gearing, not weight.

I know the SE with the LFP battery is computer derated kw wise compared to the NMC battery models, is there a difference in wheel size between them?

T1 Terry

 

[tsedge]

I know the SE with the LFP battery is computer derated kw wise compared to the NMC battery models, is there a difference in wheel size between them?

Same wheel sizes as far as I have seen. In the UK launch size was 17in and then went to 18in when the rear wiper / OPD was added (Phase 2 cars). It is possible gearing was changed then I suppose - I am talking about the original car that I have.

 

[Corindikev]

The original Excite 51 in Australia had 17 inch Continental tyres and the Essence 64 & 77 models had 18 inch Bridgestone Turanzas. AFAIK that is still the same.