bga said to use these cells for a flash light.
http://www.bga-reworking.co.uk/e-bike-batteries/panasonic-ncr18650b-3400mah-li-ion-battery-flat-top-unprotected.html
there a few quid more than on ebay but you will get real ones.
the pack says to recharge when its flat when the light flashes but i have not run the cells down yet so no idea if it will cut the power or not at 2.5v
it does cut the power when the cells are charged tho with the wall adaptor.
http://www.bga-reworking.co.uk/e-bike-batteries/panasonic-ncr18650b-3400mah-li-ion-battery-flat-top-unprotected.html
there a few quid more than on ebay but you will get real ones.
the pack says to recharge when its flat when the light flashes but i have not run the cells down yet so no idea if it will cut the power or not at 2.5v
it does cut the power when the cells are charged tho with the wall adaptor.