I wish more products would adapt 18650 batteries. My flashlight can pump out over 2000 lumens or still very bright for a really long time. 18650 has very high d

I wish more products would adapt 18650 batteries. My flashlight can pump out over 2000 lumens or still very bright for a really long time. 18650 has very high density, can be charged and discharged rapidly depending on the cell, and has safety fuses. I've thrown away a bunch of rechargable AA batteries and not a single 18650.