NICAD

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NICAD

A trademark of SAFT America Inc., Valdosta, GA, for nickel cadmium products. See nickel cadmium.
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Besides cost, they perform worse than nicads in extreme temperatures (below zero and above 105 degrees F).
Unlike lead-acid batteries, NiCads thrive on faster charges.
Panasonic has been working on nickel-metal hydride (NiMH) batteries to replace NiCads, but the difficulty has been in developing batteries that can handle high-drain applications, such as power tools, as well as NiCads can.
Although the company is not waiting around for a windfall of first-generation batteries to arrive from the EV revolution that never was, it processes many nicads out of electronics and appliances, Cimperman said.
In exchange for longer run times, however, most NiMH batteries can be charged only about 300 to 500 times, up to 50 percent less than nicads.
NiMH batteries can store more electricity than NiCads and are not as sensitive to the memory-effect problem.
Nicads cost more and hold their charge only a third as long as standard disposables--but a good nicad can be recharged up to 1,000 times, so you won't throw out nearly as many, and you'll save quite a bit of money, even factoring in the price of a recharger.