page_title: Alkaline battery
hierarchical_section_title: Alkaline battery
caption_attribution_description: English: A selection of alkaline batteries in various form factors 日本語: アルカリ乾電池、左から単二・三・四・五形、積層型。
context_page_description: An alkaline battery is a type of primary battery which derives its energy from the reaction between zinc metal and manganese dioxide.
  Compared with zinc-carbon batteries of the Leclanché cell or zinc chloride types, alkaline batteries have a higher energy density and longer shelf life, yet provide the same voltage.
  The alkaline battery gets its name because it has an alkaline electrolyte of potassium hydroxide instead of the acidic ammonium chloride or zinc chloride electrolyte of the zinc-carbon batteries. Other battery systems also use alkaline electrolytes, but they use different active materials for the electrodes.
  Alkaline batteries account for 80% of manufactured batteries in the US and over 10 billion individual units produced worldwide. In Japan alkaline batteries account for 46% of all primary battery sales. In Switzerland alkaline batteries account for 68%, in the UK 60% and in the EU 47% of all battery sales including secondary types. Alkaline batteries contain zinc and manganese dioxide, which can be toxic in higher concentrations. However, compared to other battery types, the toxicity of alkaline batteries is moderate.
context_section_description: An alkaline battery (IEC code: L) is a type of primary battery  which derives its energy from the reaction between zinc metal and manganese dioxide.
  Compared with zinc-carbon batteries of the Leclanché cell or zinc chloride types, alkaline batteries have a higher energy density and longer shelf life, yet provide the same voltage.
  The alkaline battery gets its name because it has an alkaline electrolyte of potassium hydroxide instead of the acidic ammonium chloride or zinc chloride electrolyte of the zinc-carbon batteries. Other battery systems also use alkaline electrolytes, but they use different active materials for the electrodes.
  Alkaline batteries account for 80% of manufactured batteries in the US and over 10 billion individual units produced worldwide. In Japan alkaline batteries account for 46% of all primary battery sales. In Switzerland alkaline batteries account for 68%, in the UK 60% and in the EU 47% of all battery sales including secondary types. Alkaline batteries contain zinc and manganese dioxide (Health codes 1), which can be toxic in higher concentrations. However, compared to other battery types, the toxicity of alkaline batteries is moderate.
  Alkaline batteries are used in many household items such as MP3 players, CD players, digital cameras, toys, flashlights, and radios.
caption: Size comparison of alkaline batteries (left to right): C, AA, AAA, N, PP3 (9-volt).
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