I recommend sticking to higher Ohm coils with that little battery.
Often you can achieve similar results by moving to a higher voltage battery and winding coils with a lower current draw (More Ohms).
5 Volt NIMH Batteries (Pair)
Granted with these NIMH batteries you still need to be VERY CAREFUL ... you can get a few more watts out of higher resistance coils without having to stress the battery as much.
Better yet...find or build a really good plug-in pass-through that can handle that much current. Make sure it has a fuse/breaker. This way if you have an 'oops' moment...all you do is reset the breaker or replace a fuse.
Ion Batteries can be little bombs. Don't tinker with them until you KNOW what you are doing, and you have a very high quality hand selected High Drain IMR battery. Even with the high end IMR battery...keep in mind that sustained high current applications will reduce the number of charge cycles. If it's an older battery that has been recharged alot...don't try sub-ohm with it!
Be safe....
Happy Vaping