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Mistake busbars ?
#10
(09-20-2017, 04:13 PM)Korishan Wrote: The volt meter wont show discrepancies while they are hooked up. you would need to disconnect the cells to be tested immediately after drain, if not while dain so you can see it before and  during bounceback

Very much true, but disconnect the cells immediately after drain is a bridge to far for me, before they "self-balance" i aim not fast enoug for that... sorry Wink

I believe the un-balance is going to be too small to messure with my voltmeters, maybe when discharged very fast ( way beyond normal use ).

This kind of test only shows, as hoped, there is no significant voltage drop in the lengt of the bus-bars under load, no voltage drop means the cells in front of the pack will not ge (much) more stressed then those in the back.

If there is a way to test without having to dismantle the pack, i would do it... i can not think of one....
At the end, for sure time will tell i guess....

(09-20-2017, 04:14 PM)dougal Wrote:
(09-20-2017, 03:21 PM)wim Wrote: A little test, with 2 V-meters, one in the front of the pack and one in the back, both on the same bus-bar in the middle, this is te one with 2 rows of cells.
...

My build: http://secondlifestorage.com/t-Instant-powerwall

I think your test demonstrates that your mini-meters are consistently calibrated!
Yep, they even blink between the numbers at the same time... Big Grin  was Lucky ... at last some great chinese stuff 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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Messages In This Thread
Mistake busbars ? - by wim - 09-19-2017, 06:06 PM
RE: Mistake busbars ? - by Korishan - 09-19-2017, 07:37 PM
RE: Mistake busbars ? - by dougal - 09-19-2017, 09:09 PM
RE: Mistake busbars ? - by jdeadman - 09-20-2017, 12:29 AM
RE: Mistake busbars ? - by Hanssing - 09-20-2017, 04:15 AM
RE: Mistake busbars ? - by daromer - 09-20-2017, 05:51 AM
RE: Mistake busbars ? - by wim - 09-20-2017, 03:21 PM
RE: Mistake busbars ? - by dougal - 09-20-2017, 04:14 PM
RE: Mistake busbars ? - by Korishan - 09-20-2017, 04:13 PM
RE: Mistake busbars ? - by wim - 09-20-2017, 05:58 PM
RE: Mistake busbars ? - by Korishan - 09-20-2017, 07:29 PM
RE: Mistake busbars ? - by wim - 09-20-2017, 08:29 PM
RE: Mistake busbars ? - by Korishan - 09-20-2017, 08:43 PM
RE: Mistake busbars ? - by wim - 09-21-2017, 05:08 AM
RE: Mistake busbars ? - by Korishan - 09-21-2017, 01:30 PM
RE: Mistake busbars ? - by SimonW - 09-21-2017, 02:11 PM
RE: Mistake busbars ? - by Korishan - 09-21-2017, 02:34 PM
RE: Mistake busbars ? - by wim - 09-21-2017, 03:21 PM
RE: Mistake busbars ? - by Korishan - 09-21-2017, 03:34 PM
RE: Mistake busbars ? - by SimonW - 09-21-2017, 03:36 PM
RE: Mistake busbars ? - by Ronny - 12-01-2019, 11:15 PM

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