Charging non-LFP batteries to 100% for calibration

[Mrn]

Should non-LFP batteries be charged to 100% occasionally to recalibrate the state of charge estimation by the MME?

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[RickMachE]

I don't believe that is necessary. Most people will probably do so a few times a year because of a trip anyway.

 

[generaltso]

Should non-LFP batteries be charged to 100% occasionally to recalibrate the state of charge estimation by the MME?

Sure.

 

[Teslaeata]

Should non-LFP batteries be charged to 100% occasionally to recalibrate the state of charge estimation by the MME?

Yes!

 

[Mach-Lee]

Should non-LFP batteries be charged to 100% occasionally to recalibrate the state of charge estimation by the MME?

Yes, but only a couple times per year is necessary (less often than LFP).

 

[Ynnhojnorood]

I just charged my CR1 to 100% for a road trip. I noticed I got a lot further on the first 1% than I normally do. I also got to work this morning on 8% as opposed to closer to 15% in cold weather. I’m going to keep an eye on it, but I think there’s more to it for the rest of us.

 

[Maquis]

I just charged my CR1 to 100% for a road trip. I noticed I got a lot further on the first 1% than I normally do. I also got to work this morning on 8% as opposed to closer to 15% in cold weather. I’m going to keep an eye on it, but I think there’s more to it for the rest of us.

You should be able to sanity-check those numbers using MPK and distance travelled.

 

[Hammered]

Doing an 80%-100% w/ the 120v charger does seem to keep it at a higher percentage a bit longer than otherwise. The BMS's job is to top balance as charging occurs. Neither chemistry, when assembled with like-cells, drift much. LFP has a different voltage curve, but the cells don't drift much. The longest life from LFPs is still had running a 10-90% charging regime. The cell life is soo long that they just say to charge to 100%. The LFP cars should easily reach 250k miles or so before battery replacement even comes into the picture. They very slowly degrade nearly linearly.

It's unfortunate ford can't make LMFP cells. That'd be great for low-cost RWD EVs of all varieties.

 

[VaporRT1]

Doing an 80%-100% w/ the 120v charger does seem to keep it at a higher percentage a bit longer than otherwise. The BMS's job is to top balance as charging occurs. Neither chemistry, when assembled with like-cells, drift much. LFP has a different voltage curve, but the cells don't drift much. The longest life from LFPs is still had running a 10-90% charging regime. The cell life is soo long that they just say to charge to 100%. The LFP cars should easily reach 250k miles or so before battery replacement even comes into the picture. They very slowly degrade nearly linearly.

It's unfortunate ford can't make LMFP cells. That'd be great for low-cost RWD EVs of all varieties.

Are the standard range LFP batteries using pouch cells like the extended range LG NCM batteries?

 

[Mach-Lee]

Are the standard range LFP batteries using pouch cells like the extended range LG NCM batteries?

No.

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