What are the LED flashlights using unprotected 18650?
- Thread starter anuragwap
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AnAppleSnail
Flashlight Enthusiast
If you are new to this, do not use unprotected Li-Ion cells in series. It can quickly become an unsafe situation. Please read the many resources here on Li-Ion safety. If you're worried about a few mm of length, look for spacer info here too.
AnAppleSnail
Flashlight Enthusiast
Mismatched, unprotected Li-Ion cells in a metal tube have sent CPF members and family to the hospital. I strongly suggest that nobody ever use unprotected cells in series anywhere they might object to an explosion and lithium fire. Sanyo makes decent cells, which helps - the issue is that WHEN you run the cells longer than you mean to, one will reverse charge.
