it should fit but you will end up with a gap between the cap and the body and wont be able to screw the cap on all the way, but it should fit.
But the Li-ion Cobalt's don't have the same internal current amps that the IMR's have and the booster in the LT really needs those higher amps to boost the voltage up to the higher volts on the device.
But if you are just looking for longer lasting over the high end volt vaping they should fit and work ok.
I kind of beg to differ with you joIinferno on this, ( other then the size thing possibly ) the 3100 AW, note the 3100 has a 6.2 Amp Discharge rate and 25C rating where the IMR has only a 4.5Amp and 15C, here is a spec comparison below, I have been using the 3100's in my 2 Provaris and they far out run and perform the IMR AW, further more the Black IC is a protected Batt, the IMR is not, though the IMR is a safer chemistry it could still vent where the IC AW 3100 has protection. I use a simple black O-Ring over my end cap and screw it together till the bottom cap makes contact with the o-ring. Other than size which the 3100 is a bit bigger and the may need the oring ( like the Provari uses with there non IMR ) most folks wouldn't want to use the oring but I find it no big deal myself. I like the AW-3100 now over the IMR Also using the Redilast 3100 series and it is of a high quality Batt as well,,,,,, On the flip side I also just got a shipment of some Callie's Kustoms IMR 2250's and these also seem like a very high quality Batt. Just my 2c worth. I am NOT putting the AW IMR down by any means as I am an avid AW IMR user, however these newer 3100 AW & Redilast are outperforming my IMR 18650's now and after using the new Callies Kustoms today I think these very well are going to out perform the AW IMR 18650 too.
Lastly I think anyone using a lessor grade than any of these Batts mentioned just to save a few bucks is nuts.
By the way, the MNKE 18650 and bigger Batts are also a very good performer's and should not be over looked !
SPECIFICATIONS:
Nominal Voltage : 3.6V
Capacity : 3100mAH ( rated at 0.2C discharge 4.2V - 2.5V @ 25℃ )
Operating Temp. : Charge 0 to 45℃ / Discharge -20 to 60 ℃
Recommended Charge Rate : max. 2170mA ( 0.7C ) - ambient temp. 25 ℃
Max. Discharge Rate : 6.2A ( ambient temp. 25 ℃ )
Dimensions :18.50 X 68.16mm ( +/- 0.3mm )
Nominal Voltage : 3.7V
Capacity : 1600mAH
Lowest Discharge Voltage : 2.50V
Standard Charge : CC/CV ( max. charging rate 4.5A )
Cycle Life : > 500 cycles
Max. continuous discharge rate : 15C
Operating Discharge Temperature : -10 - 60 Degree Celsius