A battery that never goes out?

Question

Will they ever make a battery that will never go out....ever?
Or will we just keep having to buy more ~_~

Answer 1

In addition to what ^ they said, I don't think it will happen. Batteries are a good way to make money. Having an infinite battery will lower the amount of money some of those companies can make. Just like technically, they can make an infinite light bulb... but they're not available to the common public. Why? They wouldn't make a lot of money of an infinite light bulb in the long run.

Answer 2

They don't exist and there is no reason to believe they will ever exist.

Non-rechargeable batteries produce energy by chemicals reacting inside them. You can only put so much of the chemicals in to the battery case.

Rechargeable batteries also work by chemical reactions; they are designed so the chemical reaction in them can be reversed. But the physical structure of the battery itself degrades each time you charge/discharge it.

The process in both types of batteries is similar to the way that metals corrode, so that even if you don't use the battery, it will degrade over time anyway (there are a couple of exotic exceptions to this).

The type of flashlights that you recharge by shaking are not an exception. Some of them have a rechargeable battery that will degrade over time, others have something called a ultracapacitor which is not a battery but it can store a small amount of power.

While ultracapacitors can take the place of batteries in some
applications that require small amounts of power, they are inherently low power and cannot give out a uniform voltage. They are not suitable as a general purpose battery replacement.

Answer 3

They sort of did. Have you seen those flashlights run when you shake them? It charges the battery and gives you a couple minutes of light. But it doesn't have to be replaced like a normal battery. If there is a large demand for that kind of technology, then it will adapt to consumer needs.

Answer 4

Being that a battery converts one form of energy to another, and energy can only be converted down to a lesser form of energy (thus loosing efficiency), it will always have a limited supply, however much it holds or often it can recharge. Otherwise you're talking perpetual motion and that is impossible (with todays technology - maybe in distant future if we're lucky).