Most digital devices today run on battery power. That is what makes them mobile and convenient. Photo and video equipment is no exception. Disposable batteries (primary chemical sources), despite the availability and cheapness, are inferior in operation to batteries (secondary chemical sources) that can withstand many recharging cycles. To choose the right power source for your equipment, you need to know a few basic points about them.
Types of batteries
1. Special batteries
Batteries can be built-in, that is, the manufacturer makes a battery that is suitable, for example, to one model range of only its brand. Here lies the main minus. Due to the uniqueness of such batteries, they can only be found in specialized stores, their price is quite high, and with long walks it is better to still have a spare power source. In addition, many brands do not make their models for standard AA batteries, so the user does not have to choose much. And the definition of parameters such as capacitance or voltage is also not required. Everything is balanced by the long
life of such batteries, for a couple of years you will not remember this problem.
2. Finger batteries (AA, AAA)
Another type of battery, as already mentioned, are finger
-type batteries. The most commonly used sizes are AA and AAA. Such batteries are used in low-cost technology and in SLR cameras (but very rarely). In professional models, “fingers” are used in conjunction with a mini-transformer - a booster - it stabilizes voltage and energy supply. Batteries (AA, AAA) have a significant difference - capacity and output voltage.
Capacity - a value that determines the life of the source - the charge that this source can give. The operating time of cameras and cameras depends on this. The most used elements in photographic equipment have a capacity of 1500-3200 mAh.
The output voltage ensures the inclusion of your device, and if its value is small, then such a battery does not suit you, you need to choose a more powerful one. Otherwise, the camera or camera simply will not turn on.
You can determine the quality of the battery in the market or in the store only with the help of a tester; the marking on the product does not always correspond to reality. So do not save, it is better to choose AA batteries for cameras from well-known manufacturers.
3. The chemical composition
Batteries differ in chemical composition. The cheapest are alkaline elements, but they have such a drawback as the memory effect. This means that the battery needs maximum discharge before charging, otherwise constant recharging will significantly reduce its service life. Such elements in expensive brands are practically no longer used, they remained only as AA batteries. In addition, such elements impose requirements on chargers, which must have a function of complete discharge.
The most popular lithium batteries today, despite their cost, are Li-Ion and Li-Pol. They do not have a memory effect, they have a relatively low weight. Most importantly, a high output rate of more than 1000 discharge / charge cycles. But they should not be allowed to discharge completely (as in alkaline).
If the shape of the battery compartment allows and there are no contraindications in the instructions, alkaline batteries (AA, AAA) can be replaced with suitable lithium batteries . The choice of a specific device depends on your preferences and the conditions in which the equipment will be operated, and, of course, on your budget.