Do you know of a good light for the heavy bag? I like the AA batteries because they are so common.
I am very partial to Fenix lights. You can go to the Fenix-store.com to see them, just click on the AA selection.
In AA I own their LD12 which uses a single AA, LD22 which uses 2AA, HL21 headlamp, 1AA, and the HP25 headlamp using 4AA, many here would like the LD41 or E40 using 4 AAs, their E series are almost the same as the LD series except fewer settings and cheaper.
If you are going to own quality lights though, you should start using Eneloop NiMH batteries (rechargeable) because they won’t leak and destroy your lights like Alkaline batteries do. The generation 3 Eneloops hold 90% of their charge for one year, and 70% of their charge for 5 years, they are called low-self discharge, rechargeables.
If you want really powerful lights for reaching out their 200 yards with massive amounts of light, then you will need to start buying lights that use the 18650 battery.
I carry this one on my belt every day.
http://www.fenix-store.com/fenix-PD35/
Fenix PD35
Digitally regulated output - maintains constant brightness
5 Brightness Levels Plus Strobe
Turbo - 850 Lumens - 1 hr. 15 min.
High - 450 Lumens - 2 hr. 30 min.
Mid - 170 Lumens - 7 hr. 45 min.
Low - 45 Lumens - 29 hr.
Eco - 10 lumens - 140 hr.
Low-voltage warning function to remind you to replace the battery
Reverse polarity protection guards against improper battery installation
Over-heat protection to avoid high-temperature of the surface
Tactical tail switch with momentary-on function