![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
![Amit Bhawani 🇮🇳 on X: "Never keep batteries in electronics you don't use regularly. (Thermometer with @Duracell batteries)🔋 When a battery works, it releases power, the chemicals inside create a gas. After Amit Bhawani 🇮🇳 on X: "Never keep batteries in electronics you don't use regularly. (Thermometer with @Duracell batteries)🔋 When a battery works, it releases power, the chemicals inside create a gas. After](https://pbs.twimg.com/media/FYUwPsvUsAAbZHA.jpg:large)
Amit Bhawani 🇮🇳 on X: "Never keep batteries in electronics you don't use regularly. (Thermometer with @Duracell batteries)🔋 When a battery works, it releases power, the chemicals inside create a gas. After
![Jez @ Peak Electronic Design Ltd 💙🇪🇺 on X: "The inside of the Duracell 12V MN21 battery is simply 8 button cells. Seems wasteful on packaging as the active volume must be Jez @ Peak Electronic Design Ltd 💙🇪🇺 on X: "The inside of the Duracell 12V MN21 battery is simply 8 button cells. Seems wasteful on packaging as the active volume must be](https://pbs.twimg.com/media/EPnc6pEWsAQ9nec.jpg)