having a strange issue - IR on the cells
brief history - i been using 60ah Cells for an ADD ON for about 5 years now - One cell in the pack was always a bit behind - i decided to finally take it apart - and replace it with one spare cell i had - turns out it it didnt change much - so i checked the balance cables - the ring ends were bit beat up -
i replaced them all now - i removed all the wiring - i made new wiring to connect the cells - there was another bit of an accidental touching of the cable with pos and neg. bit of sparks and wire got very hot fast - my girl helping me - now i dont blame her - its my fault for not taking extra protection by covering the rest of them exposed studs
so i decided to check each cell now - starting with the one that sparked - looking at the IR - around 32 - 34 at times etc, i figure its not good -
now doing another cell from the pack - about the same IR also - that wasnt bad before - i will do another one tomorrow and check it -
i got the tool to check the volts and IR from china - and when checking it with the tool - it not the same IR - its much lower under 2 - which is about what the PL8 showed when i had the pack made and charged it - with the full pack made - the PL8 showed the IR for Cell 2 to 7 under 2 IR - Cell 1 and 8 - around 2.8 IR
so how is it showing me around 32 IR when charging it single cell at a time ?
which do i believe - i figured the cello was bad but the others seem to show the same -- so maybe its not bad ?
i will do a few more till weekend when i plan to build it again as a whole pack and then check it - i am trying to use the ADD ONs if i can make more use of them before looking to buy another 8 - isnt worth getting a few extra when i found 8 Grade B - for under $300 - was told they are new grade B never used
its an ADD ON - not as important as a full chair pack -
what gives with this IR ?
the thingy from china - same one that Shirley got - that one - its all set up already - i dont have to configure it - with that - it tells me the volts and IR of the cell - those numbers do not match at all with what the PL 8 is showing me at 32 mOhms
with the thingy - its below 2 mOhms -
why is that ?
with the PL';ploi8 8 single cell charging etc, i have maybe 2 1/2 feet of cable with alligator clips soldered - and during the whole charging stage - i looked at the IR tab and seen that the numbers way off - so i though the cell may be bad - but doing a 2nd and 3rd cell - all showing the same - i am not so worried now
i always had that one cell a bit behind the rest from the start
I have to believe the seller.
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