They are also widely available at most electronics stores, making them a convenient choice for consumers. Cost-effective: AAAA batteries are a cost-effective power source, particularly when purchased in bulk.This makes them a great choice for emergency kits, as well as for devices that are used infrequently. Long shelf life: AAAA batteries have a long shelf life, which means they can be stored for long periods of time without losing their charge.They are commonly used in a variety of high-drain devices, as well as in remote controls, medical devices, and other electronics. Versatility: AAAA batteries are compatible with a wide range of electronic devices, which makes them a versatile power source.This makes them a smart choice for high-drain devices such as digital cameras, laser pointers, and handheld gaming consoles. Capacity: Despite their small size, AAAA batteries have a high energy density, which means they can provide a lot of power for their size.Their compact size also makes them easy to store and transport. Size: AAAA batteries are small in size, which makes them ideal for use in small and compact electronic devices that require a high level of portability.Note: although modern batteries have a minimum amount of toxic elements and compounds (if any), when they are dead, they must be recycled properly. When looking for new AAA and AAAA batteries, always go for the batteries from reputable brands, that have good reviews from other users. Also, due to the fact that AAA batteries are more common than AAAA batteries, AAA batteries are available in more chemistries than AAAA batteries. Long Story Short: Although AAA and AAAA batteries have a similar shape and even size, due to the difference in size, AAA batteries feature a larger capacity than the AAAA batteries - almost double. The most popular rechargeable AAAA batteries are NiMH AAAA batteries, featuring a nominal voltage of 1.2V and a nominal capacity of 325-500 mAh.Īs one can see, due to the differences in size between AAA and AAAA batteries, AAA batteries have approximately double the capacity of AAAA batteries. The most popular non-rechargeable AAAA batteries are alkaline AAAA batteries, featuring a nominal voltage of 1.5V and a nominal capacity of 500-600 mAh. The following comparison chart lists some of the most common AAAA battery chemistries, with their most important features and specifications:ĪAAA batteries are not as common as AAA batteries and are not offered in as many chemistries as AAA batteries. Note: NiMH and lithium-ion batteries are not directly compatible chemistries due to the voltage difference.ĪAAA batteries feature physical dimensions of (D x H) 8.3 x 42.5 mm (~0.327 x 1.673 inches) and are commonly known as "AAAA batteries", but other labels are also used, including MX2500, Mini, LR8D425, 25A, LR61, etc. However, although lithium-ion AAA rechargeable batteries have a smaller capacity than NiMH AAA batteries, thanks to their higher voltages, they tend to be more energy-dense than NiMH AAA batteries. The most popular rechargeable AAA batteries are Nickel Metal-Hydride (NiMH) batteries, featuring a nominal voltage of 1.2V and capacity in the 600-1300 mAh range.Īlso, NiMH AAA batteries support up to and even more than 1000 charging/discharging cycles, leading to some serious savings. When compared with Zinc-Carbon AAA batteries, alkaline AAA batteries feature larger capacity, they are almost leak-proof, have a longer shelf life, and they tend to cost a little bit more than Zinc-Carbon batteries - IMHO, the performances of alkaline AAA batteries more than justify the price difference. The most popular non-rechargeable AAA batteries are alkaline AAA batteries, featuring a nominal voltage of 1.5V, and capacity in the 850-1200 mAh range. The following comparison chart lists some of the most common AAA battery chemistries, with their most important features and specifications: ĪAA batteries feature physical dimensions of (D x H) 10.5 x 44.5 mm (~0.413 x 1.752 inches) and are commonly known as "AAA batteries", but other labels are also used, including MN2400, MX2400, Micro, LR03, R03, Triple-A, etc. Since AAA and AAAA batteries practically originated as Zinc-Carbon batteries featuring 1.5 volts, 1.5 volts is considered as the nominal voltage of both AAA and AAAA batteries - and many more batteries. AAA and AAAA batteries are rather similar cylindrical batteries, commonly used for powering toys, tools, gadgets, flashlights, remote controls, photo equipment, security devices, etc.Īlthough AAA and AAAA batteries feature similar physical dimensions, AAA batteries are somewhat larger and thanks to their size, they feature larger capacity and are capable of providing stronger currents, making AAA batteries more common than AAAA batteries.ĪAA and AAAA Batteries Features and Specificationsīoth AAA and AAAA batteries are offered in various chemistries, each one having its own pros and cons.
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