![A coworker of mine opened up a big square Duracell battery. Turns out it's just 4 smaller batteries on a cardboard platform. : r/mildlyinteresting A coworker of mine opened up a big square Duracell battery. Turns out it's just 4 smaller batteries on a cardboard platform. : r/mildlyinteresting](https://i.redd.it/fl30t79gxhwz.jpg)
A coworker of mine opened up a big square Duracell battery. Turns out it's just 4 smaller batteries on a cardboard platform. : r/mildlyinteresting
![I dropped a 9v battery & discovered there is actually 6 smaller batteries inside : r/mildlyinteresting I dropped a 9v battery & discovered there is actually 6 smaller batteries inside : r/mildlyinteresting](https://i.redd.it/3chkefbp4cd61.jpg)
I dropped a 9v battery & discovered there is actually 6 smaller batteries inside : r/mildlyinteresting
Why are Tesla car batteries made up of a bunch of tiny batteries (looks like AA battery) and not just one big battery? - Quora
![Not expecting to find 8 smaller batteries inside this already tiny 12 volt battery. : r/mildlyinteresting Not expecting to find 8 smaller batteries inside this already tiny 12 volt battery. : r/mildlyinteresting](https://i.redd.it/1jzrpq81m8u61.jpg)