about Psions to this day. If it ran on proprietary rechargeable batteries, once dead, the users would have to stop using it, mainly because replacement batteries would be hard to find and expensive. But the Psion 5mx and its kin run on ordinary alkaline batteries...

National Institute in November, 1800. He discovered the voltaic element, a non-rechargeable battery. This is the original ancestor of the alkaline battery. In 1859, the French scientist Gaston Plante discovered the lead-acid battery, the first rechargeable...

Pentax K200D. Digital SLR Camera. For anyone, choosing the right advanced camera can be difficult. We take a look at 9 cameras, and see how they compare in specs and image quality.. Powered by AA batteries AA battery (lithium, Ni-MH, and alkaline)...

taken a step backward. An area that we think Compaq's PM-1 got right was their use of two AAA rechargeable Ni-MH batteries. These batteries are inserted into a battery access door that is on the inside of the unit. The unit will run on two regular AAA alkaline...

This does not alter the fact that digicams are greedy by nature and that a battery has to have a lot of power if the user wants it to last. Rechargeable batteries are obviously the best, as they are less ruinous financially and more powerful than paltry alkaline...

good results in a variety of shooting conditions.. The M437 measures 3.8" X 2.4" X 1.0" (lens closed) and weighs in at 6.4 oz. (182g), which includes a pair of AA alkaline batteries and an SD memory card. It’s rated at 5MP, but through the camera setup...

While this one feature may seem minor, we did find it to be of some consequence. The S2000HD makes use of AA batteries, four of them. One of the menu items is selecting what type of batter you have in the camera, selection from alkaline, Ni-MH or lithium-ion...

and batteries. The SP-565UZ uses AA batteries, which can be rechargeable NiMH or Li-ion AA batteries, or a set of disposable alkaline AA batteries. We recommend that you keep at least one or two spare sets of batteries, to ensure that your shooting experience...