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Chewy on the inside – 6 AAAA (4A) batteries from a single 9V
Published by The Editors | Filed under batteries
Here’s something we did not know. A 9 Volt (9V) battery is made up of 6 AAAA (that’s not a misprint) batteries wired in series inside it. Yes, it’s true. So what are 4A batteries used for exactly?
You may not have seen many AAAA batteries yet, but you will. MP3 players, glucose meters, penlights, remote controllers, Bluetooth headsets, and even toothbrushes are increasingly using the smaller size, according to Jon Eager, an aptly named marketing director at Energizer Holdings, in St. Louis.
We’re linking to a video showing how to extract the goodness inside.
9 Volt Battery Hack! You’ll Be Surprised… – The best video clips are here
Key Stats: AAAAs are as much as 43 percent lighter than AAAs, have the same voltage and are about 20% thinner
Two AAAAs costs about $4. One 9V (which yields six AAAAs) battery costs about the same, but in real practice you get the equivalent of only 2 more AAAAs for the same price.
Resources: IEEE Spectrum - Free the AAAA Six!
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