Why Does an Old Battery Start Working When You Hit the Remote? 99% People Don’t Know This Tech

New Delhi: If the TV or AC remote suddenly stops working at home, people often knock it lightly and the surprising thing is that sometimes it starts working again. This is not a superstition, but a common scientific reason related to batteries and their contacts, which is visible in everyday life.

What is the reason?

The batteries in remotes weaken over time and a thin layer of oxide begins to form on their terminals. This layer hinders the flow of electricity. As soon as the remote is given a slight shock, this layer shakes and the battery contacts again, allowing current to flow again.

Is loose contact with the battery also responsible?

Sometimes the problem is not just oxidation but also loose contact between the battery and the spring. The battery may wear out slightly due to continuous use or falling. When knocked, it sits in its place and the circuit is completed, due to which the remote starts working again.

Does removing the battery and putting it back have the same effect?

In technical language it is called ‘re-seating’. When a battery is taken out and reinstalled, there is slight friction on its terminals. This removes the accumulated dirt or oxide layer and makes the contact clean. This method is considered safer than hammering.

Does rubbing the battery really help?

Some people reinstall the battery by rubbing it with a cloth or hand. This cleans the battery's contact points and also produces little static energy. Although this effect is very limited, it may work for some time in devices running on low power.

Can repeated knocking be harmful?

Experts believe that repeatedly hitting the remote is not a good habit. This may damage the internal circuits, battery holder or buttons. This may impact the functionality of the remote in the long run, so this should not be considered a permanent solution.

How to avoid this problem?

If the remote is not to be used for a long time, it is better to remove the batteries and keep them aside. Apart from this, cleaning the terminals from time to time and installing a new battery when necessary is the easiest and safest way. This not only keeps the remote working properly but also increases its lifespan.