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Types of Batteries

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Nickel Cadmium (NiMH)
Motorola Nickel Cadmium (NiCd) batteries are currently one of the most cost effective chemistries on the market. NiCd batteries give you more watt-hours of operation per shift than other battery chemistries. They are ideal for a user who needs a high-performance battery and who communicates under extreme conditions of cold and heat (-30C to +50C) Historically, a NiCd battery's major drawback has been its susceptibility to memory effect, or its propensity to "forget" and not utilize its full capacity. Today, this remains to be a serious tradeoff, but can be minimized with proper charging/reconditioning practices.

Nickel-Metal Hydride (NiMH)
Motorola Nickel Metal Hydride (NiMH) batteries can offer superior operation life between charges. This battery chemistry provides 30-40% longer operation time than NiCd, but does not operate as efficiently in extreme temperatures. In addition, NiMH is less susceptible to "memory effect" compared to NiCd batteries.

Lithium-Ion Batteries (Li-ion)
One of the major advantages of Motorola Lithium Ion (Li Ion) batteries is their power to weight ratio, which easily exceeds that of NiMH for a lighter, smaller power supply. These batteries tend to be the industry's most expensive chemistry, and they offer a major advantage of not experiencing "memory effect".

Intrinsically Safe (FM) 
A protection technique for safe operation of electronic equipment in explosive atmospheres and under irregular operating conditions.  As a discipline, it is an application of inherent safety in instrumentation.  In normal uses, electrical equipment often creates internal tiny sparks in switches, motor brushes, connectors, and in other places. Such sparks can ignite flammable substances present in air.  A device termed intrinsically safe is designed to not contain any components that produce sparks or which can hold enough energy to produce a spark of sufficient energy to cause an ignition. No single field device or wiring is intrinsically safe by itself (except for battery-operated, self contained devices), but is intrinsically safe only when employed in a properly designed IS system. All systems are provided with detailed instructions with the proper instructions to ensure safe use.