#Aa lithium batteries portable

NiMH and Lithium-ion AA/14500 cells can supply most of their capacity even when under a high current drain (0.5A and higher), unlike Alkaline and Zinc-chloride ('Heavy Duty'/'Super Heavy Duty') cells which drop to a small fraction of their low current capacity before even reaching 1 C. Lithium-ion chemistry has a nominal voltage of 3.6вЂ“3.7 volts, and are referred to as 14500 Li-ion batteries rather than AA.

NickelвЂ“cadmium (NiCd) with a capacity of roughly 600вЂ“1,000В mAh, nickelвЂ“metal hydride (NiMH) in various capacities of 600вЂ“2,750В mAh and lithium-ion. Rechargeable batteries in the AA size are available in multiple chemistries: Panasonic Eneloop 1.2 volt NiMH rechargeable batteries in AA and AAA A fresh alkaline zinc battery can have an open-circuit voltage of 1.6 volts, but a Lithium iron-disulfide battery with an open-circuit voltage below 1.7 volts is entirely discharged. Lithium-iron disulfide batteries can have an open-circuit voltage as high as 1.8 volts, but the closed-circuit voltage decreases, making this chemistry compatible with equipment intended for zinc-based batteries. Lithium iron disulfide batteries are intended for use in equipment compatible with alkaline zinc batteries. This is particularly important in expensive equipment, where a leaking alkaline battery can damage the equipment due to the corrosive electrolyte coming into contact with sensitive electronics. Another advantage of lithium disulfide batteries compared to alkaline batteries is that they are less prone to leak. The capacity of alkaline batteries is greatly reduced as the discharge current increases, however the capacity of a Li-FeS2 battery is not affected by high discharge currents nearly as much as alkaline batteries. Non-rechargeable lithium iron disulfide batteries are manufactured for devices that draw more current, such as digital cameras, where their high cost is offset by longer running time between battery changes and more constant voltage during discharge.

AA size alkaline batteries are termed as LR06 by IEC, and AM-3 by JIS. Alkaline batteries from 1700В mAh to 2850В mAh cost more than zinc-chloride batteries, but hold additional charge. Zinc-chloride batteries store around 1000 to 1500В mAh are often sold as 'heavy duty' or 'super heavy duty'. ZincвЂ“carbon batteries are usually marketed as 'general purpose' batteries. Primary (non-rechargeable) zincвЂ“carbon ( dry cell) AA batteries have around 400вЂ“900 milliampere hours capacity, with measured capacity highly dependent on test conditions, duty cycle, and cut-off voltage. 14500 Lithium Batteries are longer if they feature a protection circuit up to 53В mm.ДЄlkaline AA cells have a weight of roughly 23В g (0.81В oz), lithium AA cells around 15В g (0.53В oz), and rechargeable Ni-MH cells around 31В g (1.1В oz). The positive terminal button should be a minimum 1В mm high and a maximum 5.5В mm in diameter, the flat negative terminal should be a minimum diameter of 7В mm. Due to their popularity in small flashlights, they are often called 'penlight batteries'.Д, C, AA, AAA, AAAA cells, and a 9-volt batteryДЄn AA cell measures 49.2вЂ“50.5В mm (1.94вЂ“1.99В in) in length, including the button terminal-and 13.5вЂ“14.5В mm (0.53вЂ“0.57В in) in diameter. 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.

#Aa lithium batteries portable

ДЄA batteries are common in portable electronic devices. Historically, it is known as D14 (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.