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These are around since the LiPos...
The main problem of these batteries is that before 150-200 cycles, they are good for garbage. (they won't hold their charge)
Good LiPos can run 250-300 cycles, and have a much larger discharge rate.
As for safety, the only time I ever was a LiPo explode was intentional (ie wrong charger, overcharge etc.)
It is just like gasoline. Everyone know what is makes if you scratch a spark while filling your car... Still, this is the most used energy source for vehicules in the world.
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