The so-called finger sources remain the most in demand for a long time. Almost all children's toys, wall clocks, various household items work on such batteries. Misinchikovye batteries and accumulators can be called younger brothers finger, they apply as often.
Which little batteries are the best?
The most urgent issue is what distinguishes the finger battery from the little finger. The difference is noticeable only in size, the principle of operation and design are the same. Mizinchikovy size makes it possible to use a power source for the smallest devices. But as regards the filling of the metal case, there are options:
- Salted misinfed batteries until recently kept the palm of the championship. Today they are used exclusively for those devices where there is no critically high load. It can be a TV remote, a wall clock. If you need to provide power for a device with a high power, the salt option will not work. The disadvantages are a fairly short shelf life. But a really unpleasant phenomenon is the flow of electrolyte, when the liquid remains inside the device. Therefore, the salt batteries today are gradually becoming the past.
- Modern alkaline alkaline alkaline battery has an important advantage in the design: the body itself does not protrude an electrode, and therefore a leak is virtually eliminated. These batteries have almost no voltage drop, which makes it possible to use them even in high-power devices. And the shelf life is not a couple of years, but as many as seven.
- A small lithium battery will give itself up with the letters Li on the case. This is the most advanced version for today. For obvious reasons, the price will be three times higher than that of alkaline counterparts. Voltage drops in rare cases, and the shelf life reaches ten years. And of course, the capacity of a small lithium battery is the highest.
All types of small batteries have found their application in a greater degree in medicine, photographic equipment and measuring instruments, where it is important to obtain a constant working voltage.
Batteries-batteries
It is much more effective and convenient to work when you can from time to time be charged and use the device almost forever. The so-called nickel-metal-hydride batteries are a bright representative of the charged elements.
It is enough to pass a small amount of current through the battery that has already been used, as after a certain time they again become suitable for work. In the process of recharging, there are specific chemical reactions inside which renew the capacity. It is not replenished to its original value, a little less. After about five hundred such recharging the battery will no longer be usable.
If you ever wanted to save money and try to recharge a simple battery, leave these thoughts. The fact that there is simply not provided for this action and you not only do not get a new battery, but also risk filling the room with dangerous emissions after a chemical reaction.
But a little longer to extend the storage of any power source in the body of metal is quite realistic. There are several rules that allow you to use the power to the full:
- if the device is not used every day, remove the batteries from it;
- Put a metal tube in the sun or in the refrigerator equally dangerous extremes;
- many do not look at the polarity and set for good luck, until the device turns on, but in fact it can spoil it;
- High humidity is the enemy of any metal case.