The life of a modern person is very difficult to imagine without all kinds of devices powered by batteries. One-time finger and little finger batteries for these devices can be bought at every step. However, many people prefer to purchase batteries that can be recharged many times. So that the device does not fail at the most inopportune moment, it is very important to choose the right batteries.
Instructions
Step 1
In stores, there are usually several types of finger and little finger batteries. Nickel-metal hydride and nickel-cadmium are more common than others. They are designated by the letters Ni-MH, Ni-cd. The marking is usually located on the battery case. There are also batteries of other types - nickel-manganese, lithium-ion.
Step 2
Before going to the store, carefully read the instructions for the device. It is quite possible that it directly indicates which batteries are needed for this particular device. In this case, your choice is greatly simplified. Buy only the specified batteries.
Step 3
If the device is small, take it with you to the store. Sellers sometimes get confused and offer you something completely different from what you need, if they don't see a camera or a dictaphone in front of them. To avoid such situations, show the seller your camera or voice recorder. If you do not have the device with you, pay attention to the marking. Finger-type batteries are designated AA, little fingers - AAA.
Step 4
Think about the conditions under which you are going to use the device for which you buy them. If you are going to photograph in winter and summer, indoors and outdoors, then you need batteries that are not particularly sensitive to temperature changes and do not discharge very quickly even in severe frost. Nickel-cadmium batteries have this property. They also easily tolerate extreme heat. True, they have their own drawback. Such batteries are less durable and are not designed for a very large number of recharges. In addition, they can only be charged after they are completely discharged. But this is just surmountable. Most likely, you will buy a charger along with the batteries. Choose one that has a full discharge function.
Step 5
If you are not very interested in the operation of the device under severe temperature fluctuations or in extreme conditions, pay attention to the batteries with the Ni-MH marking. They are quickly discharged in frost and extreme heat. But at an average temperature they work almost perfectly. In addition, they have several other remarkable properties. They are more powerful and can withstand a fairly large number of recharges. However, they do not need to be fully discharged before the next charge. Unlike nickel-cadmium batteries, they can be stored charged. This is very convenient if you often find yourself in conditions when there is nowhere to connect the charger.
Step 6
As a rule, the voltage provided by the battery corresponds to what is required for the operation of the vast majority of devices. However, there are exceptions, so do not be lazy to look at the parameters of your device and check them with those written on the batteries. It may turn out that standard batteries are not suitable for your camera or dictaphone.
Step 7
Buy two batteries or two pairs if you are going to use the device constantly and in a wide variety of conditions. While one pair is in the camera or dictaphone, the second is being charged. In this case, it is more convenient to have different batteries for different conditions. It is better to buy a universal charger that would turn itself off when fully charged and would have a full discharge function.
