Lithium battery bags do work, but only to contain fires, not prevent them. For most users, they’re an inexpensive safeguard ...

If You have an almost new battery and for some reason it stop working, like after a crash, there is still hope to recover it, ...

I made this amazing battery pack using 18650 cells, performing about 3X better than a LiPo battery of roughly the same weight and size. So instead of flying for 15 min, now you can fly for 45 min.