The alkaline battery lasts about 22 hours (2.2Ah at 0.1A), half the time is has higher voltage than the NiMH batteries, the rest of the time lower. Increasing the current a bit and alkaline is not a clear winner anymore. for equipment that can run a week or more continuous on a battery.Īt this low current alkaline works really well, it has the highest voltage and most capacity The batteries cannot be charged on any normal charger, but requires a special charger, for these cells that means a Kentli charger, but there is also usb rechargeable cells around (There is a micro usb connector on the cell).ĭue to the electronic these batteries will also have some extra self discharge.įirst curve is with very low current, i.e. LiIon are usual rated 3.6 or 3.7 volt, this is not really fit for AA replacement, but some manufacturers have added electronic to bring the voltage down. These batteries have been around for some time, but are not very popular, this may have to do with their rather short lifespan in typical AA applications. These batteries are rated with 1.6 volt, energy (not capacity) is marked on the cell and is around 2500mWh (The reason for using mWh instead of mAh is probably because the mAh is rather low). The shelf life it not rated for rechargeable, but depending on type they can retain charge from a few weeks to a couple of years. These batteries are rated with 1.2 volt, capacity is marked on the cell and is usual in the 2000mAh to 2700mAh range.Īccording to Sanyo the battery will work down to 0☌, but with reduced capacity. The lithium batteries compared here is lithium-iron (Li-FeS2) batteries, there does also exist lithium batteries with 3 volt, they are usual sold in other sizes (CR123, CR2), but can also be found in AA size, but cannot be used instead of ordinary AA batteries. Unloaded voltage will be around 1.8 volt. These batteries are rated with 1.5 volt and has around 3000mAh.Īccording to Energizer the battery will work down to -40☌, but with reduced capacity. Today they are very rare, because they have been replaced by alkaline batteries, that has considerable better performance.Įnergizer has a datasheet with specifications and their AA has about 2900mAh at 25mA load, but only about 1400mA at 500mA load.Īccording to Energizer the Alkaline battery will work down to -18☌, but with reduced capacity.Īlkaline batteries is also known to leak and destroy equipment, even unused cells can leak. They are rated for a 36 months self life and can be used from -10☌ to 50☌. The Varta datasheet for these batteries specifies 1000mAh when discharge at unspecified low current. These batteries are rated 1.5 volt, their actual capacity is seldom specified, because it varies with load. Some of the other names used for the AA cell size is: penlight, mingon, MN1500, M IEC uses R6 for the AA battery size and then places a letter before, depending on chemistry, the most common are: LR6=Alkaline AA, FR6=Lithium AA, HR6=NiMH AAĪNSI uses 15A for alkaline AA, 15LF for lithium AA and 1.2H2 for NiMH AA. The AA battery has been around a long time and during that time many different names has been used, both from manufacturers and from standard organizations. The standard size of AA batteries is up to 50.5 mm long (including plus pole) and 14.5 mm in diameter, this was standardized in 1947 by IEC (but the battery was in use long before that). not rechargeable, NiMH,NiZn and LiIon is rechargeable. Zinc-carbon, alkaline and Lithium are primary batteries, i.e. In this article I will look at some different AA battery chemistries: zinc-carbon, Alkaline, Lithium, NiMH, NiZn, LiIon. Comparison of AA battery chemistry Comparison of AA battery chemistries
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