why are there so many sizes for button batteries?
In: 4
You obviously want the biggest battery you can fit in something, but when you get down to devices that are small enough to require watch batteries real-estate becomes really costly. So many sizes exist so that the device can use the one that’s the perfect size for it without taking up more space than it can afford.
Normal dry cell batteries (AA, AAA, etc.) are usually used in devices where they take up only a fraction of the size of the device itself and therefore there’s more wiggle room.
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