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Features & Characteristics of Ni-MH Batteries |
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| Date Published:
2007-03-22 Number of visits
495 |
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Overview
As electronic products have come to feature more sophisticated functions, more compact sizes and lighter weights, the sources of power that operate these products have been required to deliver increasingly higher levels of energy. To meet this requirement, nickel-metal hydride batteries have been developed and manu-factured with nickel hydroxide for the positive electrode and hydrogen-absorbing alloys capable of absorbing and releasing hydrogen at high-density levels for the negative electrode. Compared to Ni-Cd batteries, Ni-MH batteries have about twice the energy density and a similar operating voltage. |
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1. Green power
Ni-MH batteries are free of Cadmium and mercury. They are an environmental friendly chemical power source.
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Double the energy density of conventional batteries
Ni-MH batteries have approximately double the capacity compared with standard Ni-Cd batteries.
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Rapid charge in approx. 1.2hours
Ni-MH batteries can be rapidly charged in about an hour using a specially designed charger. |
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Cycle life equivalent to 500 charge and discharge cycles
Like Ni-Cd batteries, nickel-metal hydride batteries can be repeatedly charged and discharged for about 500 cycles(under the charge/discharge conditions specified in JIS standards) |
5. Excellent discharge characteristics
Since the internal resistance of nickel-metal hydride batteries is low, conditions for high-rate discharge up to 4CmA is possible, similar to Ni-Cd batteries. Types and applications In order to widen the useful applications of the Ni-MH cell and to use its advantages to the fullest, special purpose types have been developed. Detailed characteristics of special purpose batteries are shown elsewhere as individual data sheets. |
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Most Suitable Suitable |
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Applications |
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Video |
VCRs, digital still cameras, LCD televisions |
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Audio |
Headphone stereos, portable CD players, MD players |
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Personal Computer |
Notebook PCs |
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Office Appliances |
Handheld terminals, printing appliances |
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Telecommunications |
Cellular phones, Personal Handyphone Systems, car phones, cordless phones, transceivers |
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Suitable for use in memory back-up, guidance lamps and emergency lights.
This battery has superior characteristics in what is known as a high temperature trickle charge, being recharged on a continuous low current at relatively high temperatures in case of power failures, etc. |
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Security |
Guidance lamps, emergency lights, general disaster prevention systems, fire alarms |
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Memory Back-up |
POS, FAXs |
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