These have a pretty odd behaviour. They jump from 2.8V to 4V in less than a minute, then the voltage increase slows down and it takes a few hours to get to 4.2. Is it just me and all of them are bad or has anyone had similar experience with these cells?
Sony US18650GR (G6) Cell Issues
- Thread starter Antramx
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Wolf
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Depends on what type of charger/tester you are using. But the Sony GR series of cells do exhibit odd behaviour.Antramx said:
Look at threadhttps://secondlifestorage.com/showthread.php?tid=5132&pid=29776#pid29776Green sonycells justsuck
I personally wouldnt use them mixed with other cells in a powerwall. IR is to high and discharge and charge curves are different.
If it was all I had and could use them exclusively then yea. Otherwise no.
The V series seem to be better.
Wolf
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Fully charge them and then test for capacity to filter junk from good.
If they were stored for a long time you may expect such behavior.
Generally, if they charge very fast (completely) it means they have very little capacity left, but there may be exceptions (like in your description when you say it takes a long time to end charge even if they reached a high voltage).
If they were stored for a long time you may expect such behavior.
Generally, if they charge very fast (completely) it means they have very little capacity left, but there may be exceptions (like in your description when you say it takes a long time to end charge even if they reached a high voltage).