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2. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   Left to right: 3x AA to D parallel battery converter with rechargeable NiMH AA-size batteries inserted. MY DAY vintage flashlight. It uses 1.5 V D-size batteries. Sofirn SP36 flashlight. It features a 5 V 2 A USB-C charging port to load 3.7 V 18650 rechargeable lithium-ion batteries. The most common power source for flashlights is the battery.

3. Maglite - Wikipedia

   en.wikipedia.org/wiki/Maglite

   1982: MagCharger: a larger more expensive model popular with public safety and emergency-services personnel. This light is much brighter than typical Maglites, and uses an incandescent Halogen bulb and a rechargeable NiCad or NiMH battery pack. 1984: Two AA cell batteries (Mini Maglite) Maglite's first personal size flashlight

4. Apple Pencil - Wikipedia

   en.wikipedia.org/wiki/Apple_Pencil

   It is powered by a rechargeable 3.82 V, 0.329 Wh lithium-ion battery. [ 17 ] [ 18 ] The first-generation Apple Pencil is compatible with iPad models released since 2018 that have a Lightning connector, including the first- and second-generation iPad Pro models, third-generation iPad Air , fifth-generation iPad Mini , sixth-generation 9.7-inch ...

5. 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, [12] nickel–metal hydride (NiMH) in various capacities of 600–2,750 mAh [13] [14] and lithium-ion. NiCd and NiMH provide 1.2 V; lithium-ion chemistry has a nominal voltage of 3.6–3.7 volts, and ...

6. AAAA battery - Wikipedia

   en.wikipedia.org/wiki/AAAA_battery

   The opening of a 9-volt battery to reveal six LR61 cells, which are similar to AAAA cells. This battery size is most often used in small devices such as laser pointers, LED penlights, powered computer styluses, glucose meters, and small headphone amplifiers, with Microsoft's Surface Pen the most prominent product taking AAAA batteries.

7. Duracell - Wikipedia

   en.wikipedia.org/wiki/Duracell

   Duracell also manufactures specialty batteries, including NiMH rechargeable batteries and batteries for cameras, watches, hearing aids, etc. Their two main battery brands are "CopperTop (Plus)," marketed as longer-lasting, and "Ultra," directed mainly at users of digital devices and devices that need more power.