Actually no. The only Li-Ion chemistry that can be considered "safe" is the LiFePO4 used for the 3.2V cells. It's not perfectly safe though, not like an AA battery you can buy at the supermarket. I've read stories of 3.2V cells bursting in the charger.
The LiPo (Lithium Polymer) chemistry is somewhat less volatile than the LiCo (Lithium Cobalt) chemistry used in the regular protected round cells, but the internal resistance is so much lower and a direct short releases so much more energy it doesn't matter.
Pretty much any Li-Ion should have over-current (short circuit) protection at the least. People use the IMR batts without any protection, but there's still the potential for thermal runaway (flaming battery) if a wiring fault or atomizer short occurs. It takes a more severe condition for that to happen with a LiPo or IMR cell compared to an unprotected LiCo cell, but it can happen all the same.
The LiPo (Lithium Polymer) chemistry is somewhat less volatile than the LiCo (Lithium Cobalt) chemistry used in the regular protected round cells, but the internal resistance is so much lower and a direct short releases so much more energy it doesn't matter.
Pretty much any Li-Ion should have over-current (short circuit) protection at the least. People use the IMR batts without any protection, but there's still the potential for thermal runaway (flaming battery) if a wiring fault or atomizer short occurs. It takes a more severe condition for that to happen with a LiPo or IMR cell compared to an unprotected LiCo cell, but it can happen all the same.
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