280Ah prismatic Eve LF280K Capacity test solar battery DIY

I’m using the iCharger x8 to test a 280ah eve cell. I charged it up to 3.620v and discharged down to 2.5v
The result was 276Ah (if I fully charged to 3.650v I’m sure it will have shown the full 280ah capacity)

[@dtvking]

🙂looking good

[@DIYwithBatteries]

Wow 😍👍

[@smartazz]

I charged to 3.62v (full is 3.65v)

[@djluck95]

Good test, but knowing the LifePO4 charge curve I doubt that you will get the extra 4Ah by charging from 3.62 to 3.65v. You can do a test and you'll see I'm right. New 280Ah cells should pull from 282 to 290Ah when new.

[@smartazz]

I’ll do a retest in 12 months and see the difference. The battery is fully built and in service running 80% dod

[@niktak1114]

Not 280K. They'll test right around 280Ah when new.

[@smartazz]

@@niktak1114 In the past I experienced an increase in capacity from testing new to then testing 6 months after and found that they did gain capacity. I’m hopeful the same will happen to this cells

[@aureltanasan1413]

You are not the first one to test under quoted capacity, on fogstar A grade 280ah. There’s a guy up in Scotland that returned his first 32 cell batch, and swapped for the B grade. So far the B grade test above 280ah on al, cells. Go figure.

[@smartazz]

Well well well interesting

[@smartazz]

th-cam.com/video/weU0FTVCqu8/w-d-xo.htmlsi=XXYdCB2e-tsTJ4tD
8 month’s update