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• Nickel–metal_hydride_battery abstract "A nickel–metal hydride battery, abbreviated NiMH or Ni–MH, is a type of rechargeable battery. Its chemical reactions are somewhat similar to the largely obsolete nickel–cadmium cell (NiCd). NiMH use positive electrodes of nickel oxyhydroxide (NiOOH), like the NiCd, but the negative electrodes use a hydrogen-absorbing alloy instead of cadmium, being in essence a practical application of nickel–hydrogen battery chemistry. A NiMH battery can have two to three times the capacity of an equivalent size NiCd, and their energy density approaches that of a lithium-ion cell.The typical specific energy for small NiMH cells is about 100 W·h/kg, and for larger NiMH cells about 75 W·h/kg (270 kJ/kg). This is significantly better than the typical 40–60 W·h/kg for NiCd, and similar to the 100–160 W·h/kg for lithium-ion batteries. NiMH has a volumetric energy density of about 300 W·h/L (1,080 MJ/m3), significantly better than NiCd at 50–150 W·h/L, and about the same as lithium-ion at 250–360 W·h/L.NiMH batteries have replaced NiCd for many roles, notably small rechargeable batteries. NiMH batteries are very common for AA (penlight-size) batteries, which have nominal charge capacities (C) of 1.1–2.8 A·h at 1.2 V, measured at the rate that discharges the cell in five hours. Useful discharge capacity is a decreasing function of the discharge rate, but up to a rate of around 1×C (full discharge in one hour), it does not differ significantly from the nominal capacity. NiMH batteries normally operate at 1.2 V per cell, somewhat lower than conventional 1.5 V cells, but will operate most devices designed for that voltage.[citation needed]About 22% of portable rechargeable batteries sold in Japan in 2010 were NiMH. In Switzerland in 2009, the equivalent statistic was approximately 60%. This percentage has fallen over time due to the increase in manufacture of lithium-ion batteries: in 2000, almost half of all portable rechargeable batteries sold in Japan were NiMH. By 2011, NiMH only represented about 22% of secondary batteries.The significant disadvantage of NiMH batteries is the high rate of self-discharge; NiMH batteries typically lose 4% of their charge per day of storage. In 2005, a low self-discharge (LSD) variant was developed. LSD NiMH batteries significantly lower self-discharge, but at the cost of lowering capacity by about 20%.".
• Nickel–metal_hydride_battery thumbnail Eneloop_(1).jpg?width=300.
• Nickel–metal_hydride_battery wikiPageID "58251".
• Nickel–metal_hydride_battery wikiPageRevisionID "603469608".
• Nickel–metal_hydride_battery caption "Modern NiMH rechargeable cells".
• Nickel–metal_hydride_battery cd "500".
• Nickel–metal_hydride_battery ctode "66.0".
• Nickel–metal_hydride_battery date "January 2013".
• Nickel–metal_hydride_battery date "January 2014".
• Nickel–metal_hydride_battery etocp "2.75".
• Nickel–metal_hydride_battery etos "140".
• Nickel–metal_hydride_battery etow "60".
• Nickel–metal_hydride_battery nomv "1.2".
• Nickel–metal_hydride_battery ptow "250".
• Nickel–metal_hydride_battery reason "Deleting 'anode' and 'cathode' has not removed the ambiguity. The reader still has no clue as to which electrode is being discussed. Masihiko only developed one electrode which is what was stated before it was altered.".
• Nickel–metal_hydride_battery reason "which electrode is this? Deleting 'anode' or 'cathode' has not removed the ambiguity.".
• Nickel–metal_hydride_battery subject Category:Metal_hydrides.
• Nickel–metal_hydride_battery subject Category:NiMH_batteries.
• Nickel–metal_hydride_battery subject Category:Nickel.
• Nickel–metal_hydride_battery subject Category:Rechargeable_batteries.
• Nickel–metal_hydride_battery comment "A nickel–metal hydride battery, abbreviated NiMH or Ni–MH, is a type of rechargeable battery. Its chemical reactions are somewhat similar to the largely obsolete nickel–cadmium cell (NiCd). NiMH use positive electrodes of nickel oxyhydroxide (NiOOH), like the NiCd, but the negative electrodes use a hydrogen-absorbing alloy instead of cadmium, being in essence a practical application of nickel–hydrogen battery chemistry.".
• Nickel–metal_hydride_battery label "Accumulateur nickel-hydrure métallique".
• Nickel–metal_hydride_battery label "Accumulatore nichel-metallo idruro".
• Nickel–metal_hydride_battery label "Akumulator niklowo-metalowo-wodorkowy".
• Nickel–metal_hydride_battery label "Bateria de níquel-hidreto metálico".
• Nickel–metal_hydride_battery label "Batería de níquel-metal hidruro".
• Nickel–metal_hydride_battery label "Nickel-Metallhydrid-Akkumulator".
• Nickel–metal_hydride_battery label "Nickel–metal hydride battery".
• Nickel–metal_hydride_battery label "Nikkel-metaalhydrideaccu".
• Nickel–metal_hydride_battery label "Никель-металл-гидридный аккумулятор".
• Nickel–metal_hydride_battery label "ニッケル・水素充電池".
• Nickel–metal_hydride_battery label "镍氢电池".
• Nickel–metal_hydride_battery sameAs Nickel%E2%80%93metal_hydride_battery.
• Nickel–metal_hydride_battery sameAs Nikl-metal_hydridový_akumulátor.
• Nickel–metal_hydride_battery sameAs Nickel-Metallhydrid-Akkumulator.
• Nickel–metal_hydride_battery sameAs Batería_de_níquel-metal_hidruro.
• Nickel–metal_hydride_battery sameAs Accumulateur_nickel-hydrure_métallique.
• Nickel–metal_hydride_battery sameAs Accumulatore_nichel-metallo_idruro.
• Nickel–metal_hydride_battery sameAs ニッケル・水素充電池.
• Nickel–metal_hydride_battery sameAs Nikkel-metaalhydrideaccu.
• Nickel–metal_hydride_battery sameAs Akumulator_niklowo-metalowo-wodorkowy.
• Nickel–metal_hydride_battery sameAs Bateria_de_níquel-hidreto_metálico.
• Nickel–metal_hydride_battery sameAs Q308567.
• Nickel–metal_hydride_battery sameAs Q308567.
• Nickel–metal_hydride_battery wasDerivedFrom Nickel–metal_hydride_battery?oldid=603469608.
• Nickel–metal_hydride_battery depiction Eneloop_(1).jpg.