Taper curve of 85kwh battery (2014 s85)

[samppa]

Hello!

So I'm trying to charge my cpo to 100% for the first time. Just want to ask if this taper at the top end is normal..

It's gone like this (charging from 3-phase 16A, max 11 kw charger):

• 90% 11kw
• 92% 7kw
• 93% 6kw
• 94% 5kw
• 95% 4kw
• 96% 3kw
• 97% 2kw

Still charging at 97% and 2kw, it's taken about on hour from 90% to 97%.

 

[zap fizzle]

It's normal. The BMS might be a bit miscalibrated, so the charge might end at 97 or 98%. The capacity is still there.

A couple of cycles of 100%->very low->100% usually resolves it so that 100% occurs at 100% again.

 

[gaswalla]

yep, very normal. .in fact will be even slower at 99 percent. As noted above, it'll take a long time now bc you haven't gone up to 100 for quite a long time

 

[Lukez]

Also if battery is cold or its cold weather outside you won't get to 100% no matter how hard you try.
And yes that taper looks legit