Batteries
When buying a digital camera always look at the type of batteries it is using. Some have large LCD screens, these consume a lot. Using the flash also cuts in half the time you are using the camera. If possible, buy a camera that has specially designed rechargeable batteries. These come with their own charger and last a lot more than if you were to use normal AAA rechargeable batteries.
NiCad Batteries
NiCad (nickel cadmium) batteries offer a relatively long life, high discharge rate and economical pricing, but they have distinct disadvantages as well. NiCad batteries must be completely discharged before they are charged or their performance per charge is diminished. You can expect around 700 or more recharge cycles depending on usage; you should periodically cycle these batteries through a complete discharge. Be aware that toward the end of their supply, they go from good power to zero power rather abruptly.
Lithium-Ion Batteries
Li-ion (lithium ion) batteries have long shelf life but in AA, AAA forms they are not rechargeable. These non-rechargeable lithium batteries do last from one and a half to 2 times longer than NiMH batteries; Lithium-ion (or lithium) is not environmentally friendly and requires special disposal.
NiMH Batteries
NiMH (nickel metal hydride) batteries are the battery of choice for high drain applications (digital cameras). They have a long life and can last from 500-1000 charge cycles. Per charge cycle, NiMH will run one and and one half to two times longer than alkaline. They are more robust and can be recharged at any point in the discharge cycle. Nickel metal hydride is environmentally friendly, requires no special disposal procedures and contains no toxic metals. Moreover, they are much less toxic during the recycling process. NiMH batteries are fairly expensive. They also lose their charge faster than other types, if stored for more than a week, should be recharged before use.
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