Nickel-Metal Hydride Battery
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High Quality Content by WIKIPEDIA articles! A nickel-metal hydride cell, abbreviated NiMH, is a type of secondary electrochemical cell similar to nickel hydrogen cell. The NiMH battery uses a hydrogen-absorbing alloy for the negative electrode instead of cadmium. As in NiCd cells, the positive electrode is nickel oxyhydroxide (NiOOH). A NiMH cell can have two to three times the capacity of an equivalent size nickel-cadmium battery. However, compared to the lithium-ion cell, the volumetric energy density is lower and self-discharge is higher. Common AA cells (penlight-size) NiMH batteries have…mehr

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High Quality Content by WIKIPEDIA articles! A nickel-metal hydride cell, abbreviated NiMH, is a type of secondary electrochemical cell similar to nickel hydrogen cell. The NiMH battery uses a hydrogen-absorbing alloy for the negative electrode instead of cadmium. As in NiCd cells, the positive electrode is nickel oxyhydroxide (NiOOH). A NiMH cell can have two to three times the capacity of an equivalent size nickel-cadmium battery. However, compared to the lithium-ion cell, the volumetric energy density is lower and self-discharge is higher. Common AA cells (penlight-size) NiMH batteries have nominal charge capacities (C) ranging from 1100 mAh to 2900 mAh at 1.2 V, usually measured at a discharge rate of 0.2×C per hour.