Battery life: what characteristics determine the performance

Nowadays, what equipment will not take almost necessarily natknoshsya the need to install or mizinchikovye penlight batteries. They are similar to each other like two drops of water - in the hands of the fingers are more different than they are. But their performance, and price, very may vary.

Not to buy a "pig in a poke" and the case does not stumble on a product with a limited shelf life, and sometimes even overdue - we must be able to check their quality. Such skill will help to revise and home blockages batteries. After all, many of them it's time to send in breakage, while others distribute the instrument, which is not so demanding on power.

What characteristics determine the performance of the battery

People have long and consistently dubbed everything that gives electricity for electronic gadgets, batteries.

As a rule, they all have a cylindrical shape with the markings of AA or AAA, also found in the form of tablets.

Some of them may be charged again, this can be understood on the Rechargeable inscriptions - is the batteries, while others are used only once.

On packages and packages of all other batteries clearly indicated that they are disposable, which means that they can not be recharged. This is an important point, and it should be understood that trying to place them in the charger - it is very dangerous, they can not just ruin the equipment, but also cause a fire or explosion.

The main indicator of the working condition of the battery - it is the power that it can pass the device. On the battery terminals carry voltage and if it is inserted into the device, the contact is closed, and there will be an electric current.

Naturally, the current can not be eternal, but only time will exist as long as energy storage inside the battery is depleted. This margin is called the current capacity of the battery.

If you take the car battery, its supply current sixty-ampere-hours. In other words, it can work sixty hours, if only one ampere load or run for an hour with a load of sixty amperes.

All this is equally characteristic of both batteries. That's only power they have is much smaller. Accordingly, their capacity is determined milliampere-hours.

reference. The main component operating state batteries - capacity. That it is determined how much time it will function.

In use, the tank is continuously reduced, and when it will occur rapidly decrease, that depends on the load that is connected.

Keep in mind: the more powerful device, the greater the load it places, and therefore, the power supply runs out faster. So you need to buy batteries specifically for a certain device.

Ways to check the battery

Sometimes it happens that you need to quickly check the performance of the battery. Often, this happens when it comes time to conduct an audit in domestic deposits, and are not sure what a battery is new, and what is already lying around for several years. Yes, that really homemade bins - often in the store there is a risk to buy stale goods.

Method one: for the most desperate

We need to take two batteries and connect them together. In this case, the positive end of one of them must be connected to a negative other. After that is necessary to moisten a finger and squeeze it to the battery, where there is the negative pole and the positive pole to touch their own language. If you feel pinching, therefore, it works on the tongue. But do not do that very often.

Method two: strengthen vigilance

Carefully inspect the battery. If one of its sides smeared with some kind of liquid or visible salt deposits - just postpone it aside. Her place is already in a landfill.

Definitely - work it will not be never.

Method three: operating one hundred

To check on the performance of the battery will need a tester. Professionals it is often called a multimeter. This device allows you to check not only the voltage but also the amount of amps. Yes, and much more useful. At this point the probability of accuracy of determination is one hundred percent.

Take measurements should be short-circuit. Readings below 0.3 ampere talk about the uselessness of the batteries. If the values ​​are in the range from 0.3 to 0.7, the element will work even in devices not requiring a large voltage. If the device says that the battery more than 0.7 amps - this is a very good indicator.

Penlight batteries (those that have a marking AA), you can test and measure the voltage. Workers this value should be between 1.3 to 1.5 volts.

Method Four: torment battery electric equipment

• small motor;
• light bulb from a flashlight and a half or three volts.

If the motor quickly and successfully operating for at least two minutes, then all is well with the battery. If a small engine having started to work successfully, gradually slows down - it is better not to use a battery.

Check the bulb goes in the same order. If it is long and shining - you can buy a battery. A long bright burning signals of the good work. But if the light is dim, it is likely to soon this battery will soon come to an end.

Method five: check the stability of the battery

The experiment, of course, controversial, but they say such effective:

1. Take the battery and lift over a table or other flat horizontal plane.
2. Raise it should be about three centimeters.
3. Releasing to it falling vertically down.

If in contact with the surface of the battery falls - it says about its uselessness. Well, if you resisted - so you can use it. The main thing that the hands are not shaking.

As mentioned, it is not particularly reliable way - too many factors affect the success of the fall. Even quite operating member may be falling.

This way you can check exclusively alkaline batteries. The fact is that inside they contain a gel, or rather the electrolyte is in the gel state. Like his fortune several inertia dampens the fall and does not allow element recoil from the plane of the table. If the battery for a long time the village, and the electrolyte is moved in the solid state. That's why such a battery jump much more energetic.

If your favorite TV remote suddenly stopped functioning, forcing you to get up in order to switch the next ad, not too lazy to take the tester and check the battery. They have the property to sit unevenly. Most likely, one of these voltage is greater than the other. The one with the lower figure - a wreck, and a new place in its place.