testing the zb2l3

100kwh-hunter

Active member
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Mar 2, 2019
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Hello to all,

I was playing around with my stuff that i have, before getting serious.
To obtain equality between the zb's.

I have made a set up to get some numbers right on them, to "pair" them.

But i think this test was time thrown away.

Tomorrow i will head out for some resistors of 10-15 Ohm,
I will give each zb2l3 his own high resistor.

I would like to have some thoughts of you, comment or what so ever.
My end goal is simple: I would like to have the same zb2l3's for the final capacity test and the soh.
So i would like the same zb2l3's

I also figured out when using a computer power supply you must stabilize the voltige, BIG.
The tp4056 reallylike's a stable volt, they work better on it, with more accuracy as a bonus.
A cell phone charger is good for feeding ONE, a computer power supply needs a lot of big capacitorsto smooth out the voltage path.
So i dug out one of my big boys, 6 volt 7 amp and heavy stabilized.
(For my charging/discharging table it will be my biggest 6 volt 40 amp heavy stabilized.)
You really need a good power supply for them to work properly, for sure its for the tc4056! they really need good and stablepower.


image_bvwbto.jpg


image_daless.jpg


I set the cut off at 3.8 volt on all of them, but the one that is directly connected to the resistor and the cell had a set cut off at 3.7
It's typical the begin volts where almost the same, the end mah where at big differences?
They where all done is the same time, between 8 min and 15 sec - 8 min 50 sec, accept the one with the lower cut off
Anybody know how or why? as earlier said, tomorrow i will head out for some higher Ohm resistors to give each one of its own.
Maybe that will give some more accurate numbers.


I also did a test with an capacitor22000uf to let the tc4056 load the capacitor, and than discharge the capacitorwith a zb, it was giving to random results.
I really think this must be a cell, i will buy one at 200mah....

With best regards and thanks in advance.


shoot a lot of talking again, sorry
 
elco = capacitor
 
Thanks Cherry67,
I edited the post, and skip the part of the tc's to keep it in and onone subject.

Anybody got some idea's to "pair" them?
The resistors are on there way, and 30 zb2l3 also.
What did i get myself into now :huh: :at:

Thanks in advance
 
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