The Police P26A 18650 Battery is our best-rated 18650 cell on ... However, this cell is unprotected, but you can use it in protected cell packs and not as a standalone product.

The same holds true for battery power. [Andreas] wanted to use protected 18650 cells, but didn’t want to buy them off the shelf. He found a forty cent solution. Not only can you see it in the ...

to be the king of flashlights, but replacing those pesky D-cell batteries is kind of ridiculous in this day and age. So [Travis] decided to upgrade it to make use of the ever-so-common ...