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2. AA battery - Wikipedia

   en.wikipedia.org/wiki/AA_battery

   A Li-ion 1.5V AA-size battery, sold by the Chinese company Kentli as "Kentli PH5" since 2014 and with similar batteries later available from other suppliers is a AA-sized battery housing containing a rechargeable 3.7 V Li-ion cell with an internal buck converter at the positive terminal to reduce the output voltage to 1.5 V. [19] The Kentli ...

3. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   26,000 (alkaline) 6: Screw posts on top of battery. +: corner, −: center. Maximum diameter of the posts is 3.5 mm. H: 109.5 L: 66.7 W: 66.7 Used in locations susceptible to high vibration/shock where connectors may be knocked off the terminals. Lantern (Big) 918 R25-2 Big Lantern Double Lantern MN918 Energizer 521: 4R25-2 (carbon‑zinc ...

4. Rechargeable alkaline battery - Wikipedia

   en.wikipedia.org/wiki/Rechargeable_alkaline_battery

   The first generation rechargeable alkaline batteries were introduced by Union Carbide and Mallory in the early 1970s. [3] [5] Several patents were introduced after Union Carbide's product discontinuation and eventually, in 1986, Battery Technologies Inc of Canada was founded to commercially develop a 2nd generation product based on those patents, under the trademark "RAM".

5. Comparison of commercial battery types - Wikipedia

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

   Under certain conditions, some battery chemistries are at risk of thermal runaway, leading to cell rupture or combustion. As thermal runaway is determined not only by cell chemistry but also cell size, cell design and charge, only the worst-case values are reflected here.

6. AAAA battery - Wikipedia

   en.wikipedia.org/wiki/AAAA_battery

   These batteries are not as popular as AAA or AA type batteries, and consequently are not as commonly available. Some models of alkaline nine-volt battery contain six LR61 cells [4] connected by welded tabs. These cells are similar to AAAA cells and can be used in their place in some devices, even though they are 3.5 millimetres (0.14 in) shorter.

7. Energizer - Wikipedia

   en.wikipedia.org/wiki/Energizer

   Energizer Holdings, Inc. is an American manufacturer and one of the world's largest manufacturers of batteries, headquartered in Clayton, Missouri. [2] [3] [4] It produces batteries under the Energizer, Ray-O-Vac, Varta, and Eveready brand names and formerly owned several personal care businesses until it separated that side of the business into a new company called Edgewell Personal Care in 2015.