General > General Technical Chat
Don't keep fully charged Li-Ion in long term storage, they tend to bulge
MadScientist:
--- Quote from: SiliconWizard on January 20, 2023, 09:00:57 pm ---
--- Quote from: Siwastaja on January 20, 2023, 08:10:45 am ---Slight puffing seems to happen to almost any old cell. The difficulty is defining what is too much and how dangerous it is. I have never seen good data about this, it's all hand-waving, even among experts.
With hard-cased cells like 18650, you just can't see the internal pressure rise equivalent to this "slight puffing". When the pressure rises too much, the safety went (CID) disconnects the internal cell from the terminals, so the choice is made for you and the level of "puffing" hidden.
--- End quote ---
Yep and yep.
All in all, when we finally switch to a different battery technology on a large scale, I won't miss Li-ion. One bit.
--- End quote ---
LiTO is probably the safest li tech it doesn’t even need a BMS.
BUT after that we’re a long way from alternatives and any high capacity energy store has risks.
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