Most remotes use standard disposable alkaline AA or AAA batteries, however those that come with rechargeable batteries will use either NiCad (Nickel Cadmium) or NiMH (Nickel Metal Hydride). NiCad batteries are infamous for their "memory effect", which is a condition that reduces the battery's power storage capacity over time, while NiMH are for the most part immune. A newer battery type, LiIon (Lithium Ion), suffers from no memory effect and can hold more power in the same physical space, but has not been used in remote controls due to its prohibitively expensive cost. See also: batteries, rechargable.
The rechargeable internal battery in a CDMA mobile phone is usually one of three types: Nickel-cadmium, Nickel-metal hydride, or Lithium.
There are many different types of batteries used in MP3 players, ranging from AAs, Ds, and rechargeable batteries. You should know the battery type prior to purchase, as this can greatly affect the costs it takes to run your player.
Camcorders typically come with a ni-cad (nickel-cadmium), NiMH (nickel-metal hydride) or a lithium-ion rechargeable battery. Of the three types, ni-cads use the oldest technology, weigh the most when compared to the power they produce and need special care for optimum performance. NiMH is a step up, with higher capacity and less special care required. Lithium-ion batteries use the latest technology; they're the lightest and generally cost the most.
The material which the battery cells are made from, for example Nickel-Cadium, Nickel-metal Hydride, Lithium-Ion, Lithium-Polymer.