NiCad, Lithium, and NiMH Batteries

Three main types of rechargeable batteries are used in newer technology hand held devices. Scientists are constantly trying to develop batteries with better technologies that make them faster, more powerful, and more lightweight. In the past, the only type of rechargeable battery available was a lead-acid battery, which contains liquid and must be kept ventilated in an upright position. Though still used in autos and motorcycles, scientists have developed gel-batteries, where the liquid is semi-solid and will not spill. These batteries, most commonly used in new had held devices are nickel-cadmium (NiCad), nickel metal-hydride (NiMH), and the newest, Lithium Ion (Li-Ion) batteries.
Nickel Cadmium, or NiCad batteries are the least expensive of the three types, beca View the rest of this article