N battery - Wikipedia
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![](https://upload.wikimedia.org/wikipedia/en/b/b8/Matteucci%27s_frog_battery_trimmed2.jpg)
Frog battery - Wikipedia
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Nickel–zinc battery - Wikipedia
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Nickel–metal hydride battery - Wikipedia
![](https://upload.wikimedia.org/wikipedia/commons/2/21/Alkali_battery_5.jpg)
Alkaline battery - Wikipedia
![](http://wiki.ross-tech.com/wiki/images/3/38/Battery_serial_number.jpg)
Battery Replacement - Ross-Tech Wiki
![](https://www.wikihow.com/images/thumb/b/bd/Make-a-Homemade-Battery-Step-26-Version-4.jpg/aid1395070-v4-1200px-Make-a-Homemade-Battery-Step-26-Version-4.jpg)
4 Ways to Make a Homemade Battery - wikiHow
![](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c4/Battery_with_polymer_separator.svg/1200px-Battery_with_polymer_separator.svg.png)
Separator (electricity) - Wikipedia
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Electric battery - Wikipedia
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4 Ways to Make a Homemade Battery - wikiHow