ANSI and IEC battery nomenclature gives several designations for cells in this size, depending on cell features and chemistry. Introduced in 1907 by The American Ever Ready Company, the AA battery size was standardized by the American National Standards Institute (ANSI) in 1947, but it had been in use in flashlights and electrical novelties before formal standardization. The exact terminal voltage, capacity and practical discharge rates depend on cell chemistry however, devices designed for AA cells will usually only take 1.2–1.5 V unless specified by the manufacturer. Several different chemistries are used in their construction. An AA battery is composed of a single electrochemical cell that may be either a primary battery (disposable) or a rechargeable battery. ĪA batteries are common in portable electronic devices. Historically, it is known as D14 (hearing aid battery), U12 – later U7 (standard cell), or HP7 (for zinc chloride 'high power' version) in official documentation in the United Kingdom, or a pen cell. The IEC 60086 system calls the size R6, and ANSI C18 calls it 15. The AA battery (or double-A battery) is a standard size single cell cylindrical dry battery. For the military weapon, see anti-aircraft warfare. Simply charging it does not undue this basic chemical change.This article is about the type of electric cell. The reason the lifespan has shorten is because of the chemical reaction converting the chemicals that make up the cell as the battery drains. Although an alkaline battery may read “good” at 1.6 volts, this reading on a LiFeS2 battery indicates the product has been discharged. Any battery with an OCV <1.70 (after it has been allowed to recover) is completely discharged. In fact, you "measuring it" at 1.6V means its DEAD:Ī “good” battery will generally have an Open Circuit Voltage (OCV) >1.74 volts. If you want to recharge lithium batteries, get standard lithium secondary cells. If they could be recharged and life expanded, they would have found a way, considering how many billions they have in funds. To be honest, if they could be recharged, Energizer would market them like that. Can you physically recharge them? As you noticed, yes, but it's not a good idea. Lithium Primary batteries are not meant to be recharge.
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