Noob, where do I start?

[Haterade]

You definitely need to read up on battery types, then emitters.

Give these a look

Guide: Rechargeable AA batteries / 14500 batteries / Chargers

Hello all, Well, you guys might have managed to convince me to start using rechargeable batteries.. Maybe! I hope your answers to my questions will be helpful to other beginners as well... Alkaline vs. Rechargeable 1.2V vs. 14500 in a Flashlight Do 1.2V rechargeables produce longer runtime in a flashlight than 14500's? Do 14500's produce longer runtime in a flashlight than an alkaline AA? How is the output of a flashlight running a 1.2V AA rechargeable compared to an alkaline AA? How i…

The BLF Battery Data Base

The Budget Light Forum Battery Data Base : Forums members should feel free to contribute discharge data , and there thoughts / review on the cells tested . I would like to keep this DB for new cells , and any size or type thats used in flashlights . Anyone wishing to contribute batteries for testing / reviewing can contact me [ old4570 AT yahoo.com ] or PM me . [ Manufacturers - Distributors - Retailers most welcome to contribute to the DB ] Anyone wishing to make a financial contribution …