what’s the difference between AA and AAA and other batteries? Why do we have a bunch of different ones?
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Afaik the biggest diffrence is size, and some have a diffrent voltage and capacity.
I assume we need to have diffrent sizes, because for example a wristwatch would have to be really big to run on AA/AAA batteries
They are sizes.
Back in the day, batteries came in size A, B, C, D, etc.
A being the smallest, and because they couldn’t make batteries that were smaller at the time, it was fine.
But, as tech got better we COULD make batteries smaller, so what is smaller than A? AA, then AAA, then AAAA.
This [site](https://www.batterypowerzone.co.za/blog/60/why-are-batteries-called-aa-and-aaa) breaks it down.
AAA batteries are smaller compared to A. The smallest battery is of pin-shaped, 3.5mm diameter lithium-ion.
AAA batteries carry a smaller amount of mixture as compared to the AA.
AAA batteries carry a smaller amount of charge as compared to the AA.
AAA batteries are used in low power (small) devices, while AA batteries are used in high power (small) devices.
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Because you need big beefy batteries to operate things like a remote controlled car without it dieing after 5 minutes but you also need tv remotes that fit in your hand.
Your cylindrical alkaline batteries all have the same voltage. AAA, AA, C, D are all 1.5 V. They have the ability to satisfy higher current (draw) the larger they get. If you could adapt a C battery to a device requiring a D cell, it would still run but it might not run for very long. Small devices typically don’t require much current, so the battery can be made smaller, allowing for a reduction in size of the device.
Why are there different ones? Imagine bowling about with 6 AA’s in your wrist watch.
Not all 9V are made from 6 AAAA. I recently ran into a stack of flat Batteries that they built 9V out of. Now I get an X-ray first before I tear them open. It helps to have a friend with an X-ray machine
I’ve been playing too much Halo and read AA Batteries as “Anti-aircraft batteries” and was wondering myself what a AAA battery is 😛
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