Alkaline Batteries: Alkaline batteries work due to the reaction between zinc and manganese dioxide. Compared with zinc-carbon batteries, they have a higher energy density and longer shelf-life. Compared with silver-oxide batteries, they have lower energy density and shorter lifetimes but lower cost.
Lithium Batteries: Extremely light and long-lasting batteries. They last five times longer than ordinary alkaline batteries in high-drain devices like digital cameras. In flash units, they power three times more flashes with a consistent, quick 8-second recycle time. They weigh about one-third less than ordinary batteries and operate well in extremely hot and cold temperatures, from -40 to 60°C. Alkaline batteries are particularly prone to rapid drop off of power and we recommend lithium batteries.
Silver Oxide Batteries: Silver Oxide batteries have a long life and very high energy/weight ratio, but are prohibitively expensive for most applications due to the high price of silver. However they are used in smaller sizes where the amount of silver needed is tiny.
Rechargeable Batteries: Rechargeable battery systems are ideal for many outdoor applications and save both the environment and your money.