Nickel Metal Hydride (NiMH) - 1.2 volts per cell
| Nickel Metal Hydride (NiMH) Batteries |
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The NiMH battery is becoming more widely used as the chemistry technology has improved and the costs of production have come down. You'll find them increasingly in use in mobile phones, laptop computers, video cameras and two way radios where large amperage loads are not required. The NiMH battery is appealing to battery manufacturers as it has about 30% more capacity, size-wise, than NiCd. Less appealing is that NiMH batteries only provide around 500 charge/discharge cycles - however there is very little in the way of "memory" problems. This battery can be regularly "topped up" and need only be fully discharged every month or so. NiMH chemistry is not regarded as being hazardous to the environment. One of the major advantages of 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'. |
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