.44+ (Plus) mini Booster Box Mod Variable Voltage
The Plus is same circuit as the .44 mini booster but with an 18350 battery rather than the 14500.
I used the 04050CAS because the mount studs are much shorter but requires much effort to solder too. I real P.I.A.
The box is the same height and width but deeper. Some modding required to house the battery.

Voltage range is 3.79v to 6.2v. Nice vape from this 1200mah battery

Photo to the left is the .44 Plus (18350) and the right is the .44 (14500)

clean lil mod,

how many amps will it truly pull

@5-6v

i normally use this in all my mods a bit more pricey but $%&@ reliable and will stay at a constant 3amps up to 8v
with only minimal droput http://www.dimensionengineering.com/DE-SWADJ3.htm

ive found it for $20 but not there this thing is as small as your board and does most anything rock solid

New Addition:

.44++ (Plus Plus) mini Booster Box Mod Variable Voltage
Same as above but will hold an AW 18490 - 1100mah or AW IC 18500 - 1500mah.

Some modding required to house the battery. I was able to fully recess the battery connector.

Voltage range is 3.99v to 6.1v. Even better results than the 18350.