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Why Do Batteries Get Hot?

Jan 07, 2022   Pageview:2471

During regular use, your battery can become warm, and it is perfectly normal. Batteries can get warm due to various reasons, such as short circuit, defects in manufacturing, mismatch of discharge current and battery, trying to connect a battery to a charger etc. 

Also, while using two different batteries, this problem can be apparent. The use of multiple power supplies with variation in charge levels can also cause the issue. When various elements are turned on in series, batteries can heat up very much. Excessive heating of current sources can also happen when an electrical appliance is placed in direct sunlight or near a radiator. 

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Why Do Batteries Get Hot In Remote Control?

A hot battery can often be found in robust devices working at a comparatively high voltage. Generally, products of barrel, pinky and finger shape are sequentially installed in such kinds of portable devices. Thus, these are more prone to too much heat. “Krona” type elements are often overheated, particularly in all those cases where there is a connection established between the product and a robust device. 

Various remote control owners find that while using these devices, the body of the product heats up very strongly. This is most often because of the buttons drooping, following which infrared or radio waves are generated by the electronic product in a constant mode. Often, heating of the batteries can also be seen in devices with more than one battery. 

More voltage is generated by serially connected current sources. With insufficient contact, these always result in the metal parts getting heated up. 

In case even after the electrical appliance is turned off and the batteries do not cool down, a short circuit might be the problem. In case the elements are not taken out and cooled, there could be a leak and explosion – which can make the household appliance unusable.

Such a phenomenon can be particularly harmful in toys used by kids. Following removal and cooling, at the point of contacts of the batteries, you should check the voltage. For a short time, all electrical potential can be exhausted during a short circuit. It is impossible to use the battery for any more time for the purpose it has been intended for. 

Try to also determine the cause of the short circuit and determine the reason for this phenomenon. Unless it is done, there can be damage to the new batteries following installation in an electrical appliance. In case there is a heat-up of the batteries in a room with higher air temperature, try to reduce the operation of the device as much as possible in these conditions.

Why Do Batteries Get Hot When Touching Metal?

The battery might even suffer from a short circuit. This can occur in case the battery comes in contact with any metal object. If a short is experienced by the battery, it will start getting discharged very quickly. Because of such a rapid flow of current, it can heat up fast. Naturally, it is essential for you not to get batteries stored in an area which has metal objects such as coins. 

In case something metal comes in contact with positive and negative posts of batteries, there can be a buildup of heat. In case such heat is confined, such as in a box in your garage, glove compartment or junk drawer, it cannot get a chance to dissipate. Eventually, it can get too hot to make surrounding materials get ignited. 

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It can easily occur in case:

The uncovered end of a 9V battery is touched by a penny. 

More than one AA battery comes in contact with a common metal object, such as a paper clip. 

In case you find an overheating battery, you should get it removed immediately from the device and have it set somewhere, to get cooled down. The batteries should be kept separate from all kinds of metal objects, such as paper clips and coins. Tape must be put on battery posts, to keep them from coming in contact with other batteries or metal objects.

Why Do Batteries Get Hot In Your Pocket?

It is quite normal, and almost every phone battery gets hot. The heat comes from the battery of a phone, and is generally gets heated up when a phone draws power at a quicker pace, such as while watching a video, using GPS or having a phone call. In case your phone becomes very hot, making it lose power, a faulty battery might be the problem. Otherwise, however, the major problem is that it can be too uncomfortable to hold the phone. In case you have a very hot battery, you might be draining battery power quite fast. This is never a good thing. 

You should avoid carrying loose batteries in a purse or pocket, with metal objects such as paper clips and coins. It can cause the battery to get short-circuited, resulting in leakage or high heat. 

You should turn battery-draining apps off. When your phone is sleeping, Maps should be closed. Ensure that your phone is not searching for signal constantly, etc. Battery-saving apps can be useful in such cases. Having all the running apps closed can also be useful. Overall, if it is a phone battery, try to take all the important steps for the efficient use of your battery.

It is also a good idea to look for runaway processes. At times, an app can start drawing more power without any apparent cause. Or it might be coded poorly and start drawing more from CPU than normal, which can – consequently- consume more of your battery power. 

You should also try to take the battery out of the case. It is related to the last one, but you should do this in around any case of overheating. In case you have a case over your phone, have it taken off. Some phone cases tend to insulate heat much more than the others. When you remove it, your phone can get the opportunity to get cooled down. 

Avoid over-clocking your phone. It can be one of the best ways to make it work at a slower pace. However, that will only make it consume more of the battery power and heat up much more quickly. 

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