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A nickel–metal hydride battery (NiMH or Ni–MH) is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the nickel–cadmium cell (NiCd), with both using nickel oxide hydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium.
A common battery type in cameras and photographic equipment. In Switzerland as of 2008, these batteries accounted for 6% of lithium camera battery sales. [75] 2CR5: EL2CR5 DL245 RL2CR5 KL2CR5 6135-99-577-2940 (NSN) 2CR5: 5032LC [137] 1,500: 6: Double cylinder. Keyed. Both on one end. Terminal center spacing 16 mm. H: 45 mm L: 34 mm W: 17 mm
2 [6] Alkaline: Zn/ MnO 2 LR KOH Manganese (IV) oxide: No 1949 [9] 0.9 [10] 1.5 [11] 1.6 [10] 0.31–0.68 (85–190) [12] 0.90–1.56 (250–434) [12] 50 [12] 8.17 (122) [13] 45–85 [12] 0.17 [12] 5–10 [4] Rechargeable alkaline: RAM KOH Yes 1992 [14] 0.9 [15] 1.57 [15] 1.6 [15] <1 [14] Silver-oxide: SR NaOH/ KOH Silver oxide: No 1960 [16] 1. ...
A nickel–hydrogen battery (NiH 2 or Ni–H 2) is a rechargeable electrochemical power source based on nickel and hydrogen. [5] It differs from a nickel–metal hydride (NiMH) battery by the use of hydrogen in gaseous form, stored in a pressurized cell at up to 1200 psi (82.7 bar ) pressure. [ 6 ]
Nickel–zinc batteries have a charge–discharge curve similar to 1.2 V NiCd or NiMH cells, but with a higher 1.6 V nominal voltage. [5]Nickel–zinc batteries perform well in high-drain applications, and may have the potential to replace lead–acid batteries because of their higher energy-to-mass ratio and higher power-to-mass ratio – as little as 25% of the mass for the same power. [6]
Panasonic's fourth-generation Eneloop batteries, in AA and AAA sizes Panasonic Eneloop Smart & Quick Charger BQ-CC55 Sanyo Eneloop battery charger. Eneloop (Japanese: エネループ, Hepburn: Enerūpu), stylized as eneloop, is a brand of 1.2-volt low self-discharge nickel–metal hydride (NiMH) rechargeable batteries and accessories developed by Sanyo [1] and introduced in 2005.
Data sheets for rechargeable cells often list the discharge capacity on 8-hour or 20-hour or other stated time; cells for uninterruptible power supply systems may be rated at 15-minute discharge. The terminal voltage of the battery is not constant during charging and discharging.
The high-power NiMH battery of a Toyota Prius. The patent encumbrance of large automotive NiMH batteries refers to allegations that corporate interests have used the patent system to prevent the commercialization of nickel metal hydride (NiMH) battery technology.