Daily Charging Limit Percentage - what's yours set to?

[RLXXI]

100% every time at home on the slow charger. There's enough of a buffer built into the battery to not have to worry about it.

Example of that buffer is the difference between actual capacity vs usable capacity. Ford says I have 123kwh usable, actual battery capacity, see photo.

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[Firn]

I was referring to the actual battery size/ reserve.

Ah! Now I gotcha. I was over here wondering why someone was expecting 10yr and 20yr estimates on a truck thats less than 5yrs old, ha!.

The actual lightning data is pretty easy. Nominal "100%" for a Lithium NMC cells is 4.2v, thats generally the industry standard. The lightning maxes out at 4.09v per cell, or a little bit below 4.2v. That is the "buffer" we talk about, which fwiw appears to be entirely on the top (there is little to no buffer on the bottom).

The numbers given were assuming a 4.09v per cell at "100%", not the nominal 4.2v. When I ran it with a traditional NMC profile the degredation was worse.

Here is the nominal "non Lightning" numbers.

Total annual loss = cycle loss + calendar loss.
100% cap: 1.09% + 1.20% ≈ 2.29%/yr
90% cap: 1.09% + 0.70% ≈ 1.79%/yr
80% cap: 1.09% + 0.40% ≈ 1.49%/yr

Then capacity after 20 years ≈ (1 − annual_loss)^20:
100% → ~62.9% remaining
90% → ~69.7% remaining
80% → ~74.1% remaining

 

[JTWIRE55]

100% every time at home on the slow charger. There's enough of a buffer built into the battery to not have to worry about it.

Example of that buffer is the difference between actual capacity vs usable capacity. Ford says I have 123kwh usable, actual battery capacity, see photo.

Since the battery is larger than the charge it holds and the battery is never fully charged. Its okay to go to 100%?

 

[MaintGrl]

I typically charge to 90%, although the range acquired on the GOM has been dropping.
A month ago when I charged to 90%, I got up to 216mi of range on the GOM.
Last night when I charged from 36% to 90% I got 173mi, on the GOM.
Each time I have charged it has been dropping...
Been 6 months since I charged it to 100% and I got 232Mi on the GOM, then.
May have to do it again....to see what I get.

 

[All-Terrain]

Just got my charger installed monday so I'm still on the 90% recommended. Even at 90% it's a lot more range than I'm likely to use in any given day.

 

[swajames]

almost always charge to 80%, and rarely let the SoC go below 40%. Don't often charge to 100% but do on occasion. The battery still shows 100% state of health, obviously we've yet to really determine how accurate that is.

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