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My adventures
#51
Very interested, just not a face book fan.
Will see it soon on the news then i guess  Wink
___________________________________
18x 300Wp solar off grid and 10x 180Wp solar tracker grid-tie
10KW 3phase hybrid inverter. 40Kwh 18650 storage (for now)
My setup: https://secondlifestorage.com/t-Instant-powerwall
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#52
I still have heaps of work to do before it can even be communicated to the world... You're always welcome to come and have a look :p
wim likes this post
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#53
Just an update. I am testing cells again with the diy test stand.

The collection of good cells is growing and recently most are plus 2500mAh.

Also a picture of recent e bike packs with prismatic cells. I will process those too, too much storage capacity to throw away.
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#54
I cant add the pics from my mobile.....
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#55
Three e bike batteries 44 cells each, and all cells test 0V.......

Another pack with 60 cells around 0,65V.....

That is what you call bad luck.....
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#56
Have you tried to recover any low voltage cells?
There are discussions on the forum about using very low currents being successful. e.g. 1 tp4056 feeding multiple cells in parallel.
With that many cells it might be worthwhile for you?
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#57
I kind of read about it and decided not to recover the realy low ones.... I just dont know what lead them to go so low and what the consequences are for the cell....

Thanks for the advice though! It is painful to toss 60 cells at once but I do not want to cut corners in terms of safety
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#58
(08-11-2019, 08:52 AM)Ivo Staelens Wrote: Just an update. I am testing cells again with the diy test stand.

The collection of good cells is growing and recently most are plus 2500mAh.

Also a picture of recent e bike packs with prismatic cells. I will process those too, too much storage capacity to throw away.

I figured it out
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#59
I had the same lot of them of what you have on your stairs, I brought them to the recycler two weeks ago.
Nobody wanted to trade them for a six pack....
Last week we drove to Belgium, Lummen, i would be very happy to give to you, or sended.

If i encounter more of them, save them or leave them?
I don't know how it works over there, but ebike dealers in the Netherlands know exactly what to give away or sell, aint much good.....just saying.
Still learning English. Learning Li ion and solar technology.

2800 cells in packs Exclamation above 2500mah and 90%soh.
~400 cells between 1800-2500 and above 90%soh(sell?)
600 cells between 2200 - 3000mah, 80-90%soh (sell?)
3000 waiting for testing.
approx: 0 cells not safe for use: dead, heaters, to high ir or sd/vamps

Time is our enemy, must work to, the sun is our friend, must relax to.
With best regards
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#60
(08-17-2019, 06:35 PM)100kwh-hunter Wrote: I had the same lot of them of what you have on your stairs, I brought them to the recycler two weeks ago.
Nobody wanted to trade them for a six pack....
Last week we drove to Belgium, Lummen, i would be very happy to give to you, or sended.

If i encounter more of them, save them or leave them?
I don't know how it works over there, but ebike dealers in the Netherlands know exactly what to give away or sell, aint much good.....just saying.

Save them! They are not 18650, but they hold electricity so you can test them the save way and integrate them in ur powerwall ?
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