I had a toy when I was a kid that took 6 AA batteries. Now I know that means it wanted around a 9V input. But why did it take 6AAs instead of one 9V? The 9V would’ve been smaller and lighter, wouldn’t that have let them make a smaller battery compartment and save on manufacturing costs?
In: 7
The classical square 9V battery shape is actually made up of 6 smaller round cells. However the smaller batteries can not provide as much current as the larger batteries and will also go flat sooner. So for example a boom box would usually require D cell batteries as it needed lots of power to run the amplifiers and speakers.
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