4x 21700 cells popcan lights?

[Juggernaut]

With how much more capacity you get out of a 21700 cell is there any 4x or even 3x Popcan lights that run these? You could get a massive 42% increase in run time with marginal increase in light size. I did a quick search, but nothing on google popped up.

 

[richbuff]

With how much more capacity you get out of a 21700 cell is there any 4x or even 3x Popcan lights that run these? You could get a massive 42% increase in run time with marginal increase in light size. I did a quick search, but nothing on google popped up.

I have a popcan Imalent MS06 that takes three 21700 protected button top cells. 6 x XHP70.2. Very, very bright.

I also have two Haikelite HK90 that take three solder blob 40T 21700 cells. 3 x SBT90.2, great power thrower, but not in popcan configuration.