You don't need to shell out $85 on a "lightstrike 360 tactical Flashlight" at some Ranger supply outlet. Just get a decent headlamp effectively portable Flashlight so experience two light sources, that both consider the same battery. Then buy any more set of lithium batteries; they will run more but last longer, particularly if they are cold.

http://mangoslimblognetherland.com/tacticlight-360/