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2. Nickel–metal hydride battery - Wikipedia

   en.wikipedia.org/wiki/Nickel–metal_hydride_battery

   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.

3. Comparison of commercial battery types - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_commercial...

   Rechargeable alkaline: 5–100 [13] Nickel–zinc: 100 to 50% capacity [13] Nickel–iron: 65–80 5,000 Nickel–cadmium: 70–90 500 [25] Nickel–hydrogen: 85 20,000 [31] Nickel–metal hydride: 66 300–800 [13] Low self-discharge nickel–metal hydride battery: 500–1,500 [13] Lithium cobalt oxide: 90 500–1,000 Lithium–titanate: 85–90

4. Eneloop - Wikipedia

   en.wikipedia.org/wiki/Eneloop

   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.

5. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   12 × 30.2 Rechargeable nickel–cadmium and nickel–metal hydride are far less common than other rechargeable sizes. [63] Mercury batteries of the same dimensions are no longer manufactured. A21: A21 11A E11A MN11 L1016 4LR23 V11GA LR1016 4LR932 (alkaline) 1811A (alkaline) 6135-99-665-9374 [64] 55 (alkaline) 6: 10.3 × 16.0

6. Nickel–hydrogen battery - Wikipedia

   en.wikipedia.org/wiki/Nickel–hydrogen_battery

   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 ]

7. AA battery - Wikipedia

   en.wikipedia.org/wiki/AA_battery

   Rechargeable batteries in the AA size are available in multiple chemistries: nickel–cadmium (NiCd) with a capacity of roughly 600–1,000 mAh, [11] nickel–metal hydride (NiMH) in various capacities of 600–2,750 mAh [12] [13] and lithium-ion. NiCd and NiMH provide 1.2 V; lithium-ion chemistry has a nominal voltage of 3.6–3.7 volts, and ...