Are you changing the battery?  Don’t make that mistake and don’t throw your money in the trash

Are you changing the battery? Don’t make that mistake and don’t throw your money in the trash


It is easy to make a mistake when replacing the battery – for us it means unnecessary waste of money, for the environment – the creation of toxic waste. But this can be easily avoided.

There is no shortage of battery powered devices in our homes, cars and garages. They are, among others, watches, remote controls, scales, thermometers and flashlights. If the device is powered by one battery – the matter is simple. When the equipment stops working, the cell is exhausted and remains to be replaced with a new one.

Often the situation is completely different when there are two, three or more batteries in the device. It turns out to be they do not wear evenly. In contrast, the level of normal wear varies widely. The matter also increases when the device receives batteries that we previously had in the cabinet and mixed with special purchases for replacement (batteries are often placed in pairs, so excess or shortage is difficult to avoid).

How batteries are used
1.21 V – such an alkaline battery shows signs of wear compared to a new one, but it will still be used and you do not need to throw it away (let us remind you that the voltage of nickel-metal hydride batteries, which is not suitable for activating other devices, but usually deals with advice, is 1.2 V).

It turns out that the failure of the device is not necessarily due to the use of all batteries. Only one of them can be released. It is enough to replace it to use others for many more weeks or even months. Let’s add that this is not an investigation carried out by us once, in one device.

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How can I tell which battery is used? The easiest way to do this is with a multimeter. We used it when the gauge indicated battery usage. They had voltages of 1.21 V, 0.98 V and 0.06 V. A clean AAA battery should be within 1.5 V, while most devices can work when it drops to 0.9-1.0 V. By replacing one battery we avoided throwing away two, which are still working.

Time to replace the battery
The weakest link in electrical equipment is a major problem. Due to their wear or damage, a message about low battery power may appear or the device will not turn on at all. If we didn’t use a meter, three batteries would have disposable properties. It turns out unnecessary. Only one needed to be replaced.

If we don’t have a meter, you can also put batteries one at a time in a device that only needs one battery (eg a watch). Batteries that won’t start it will need to be replaced due to wear.