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What to do with 100 4P4S packs
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(02-15-2019, 12:18 AM)askpete Wrote: Thanks dallski I will need to do more investigation/testing. Luckily I'm not in a hurry. I haven't bought anything yet so that is good too. I went through a box and they ranged from 12 to 16v with no apparent pattern. So I guess my first job will be to get them all to storage voltage.

Those ergo batteries are excellent, I have a good source where I get a few every week for free. The BMS in those seems especially fragile - good for me ? I've rewired a few as 7s and sold them to mates for charging racing quad batteries. Making this almost a self funding project.

@wolf yep they look exactly the same as these ones. Will keep you posted, though might be awhile before I get onto it.

The closer you store them to 14.8V, the better.

Ego batteries, even the parts only ones, usually sell for a good price, so I'm not surprised you are doing well with them! If you would like to fix them, there is a guy on youtube who figured out the most common problem with the BMS, he goes by Thrifty Tool Shed. I believe it is a faulty transistor that causes the green blinking light of death. Not to hard to fix, but you have to de-pot the BMS.
Formerly known as Dallski
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