as I know that there are some double or triple A’s batteries that can be recharged and I know that there are some that are non rechargeable and can’t be but can someone please why? Like why if I was to put a non rechargeable double A battery in the device used to recharge a rechargeable double A battery why wouldn’t it work in simpler terms what makes rechargable batteries rechargable but non rechargeable ones not?
In: Technology
If you put a non-rechargeable AA battery in a normal charger, most of the time the charger will detect that it is the wrong kind of battery and refuse to charge it.
But if it didn’t detect it, the “disposable” battery *can* be charged. I once even owned a charger for disposable batteries like this one: [https://www.ebay.com/itm/185997276608](https://www.ebay.com/itm/185997276608) . But it wasn’t a good idea and is heavily discouraged by battery manufacturers. The battery capacity degraded quickly and they often leaked when being recharged. There’s more information here if you are interested: [https://en.wikipedia.org/wiki/Rechargeable_alkaline_battery#Recharging_of_disposable_alkalines](https://en.wikipedia.org/wiki/Rechargeable_alkaline_battery#Recharging_of_disposable_alkalines)
Why does it work this way? It’s more expensive to build a battery that’s rechargeable. It takes more durable and expensive materials. Everybody that builds “disposable” batteries could instead make them rechargeable, but they would be a lot more expensive and wouldn’t last as long on that first charge.
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