Batteries type D: description, characteristics

A battery is a source of electrical energy (a source of current) for autonomous power supply of various devices. At the heart of any battery is an elementary circuit: the anode-cathode, between them is the electrolyte. The anode and cathode are made of different materials, the anode is made of metal (zinc), and the cathode is made of oxides of various metals. As a result, when you immerse in the electrolyte between the two poles of the battery, there is a difference in electrical potentials, in other words - electric current. Batteries, by their nature, refer to chemical sources of energy. They are the primary source of current, that is, they are irreversible processes. There is an opinion that the batteries can be recharged after they are discharged, but it's not. If you start charging the battery, it may explode. Secondary sources of electrical current are batteries, that is, batteries that can be recharged.

Batteries type D are of three types:

- Salt (coal-zinc) - this is the cheapest kind of batteries. These batteries have the smallest capacity, are quickly discharged at low temperatures, do not work well with loads requiring high current.

- Based on zinc chloride. Such batteries are better than salt tolerate low temperatures, but have a low charge capacity.

- Alkaline (alkaline) have an average cost, work reliably at rather low temperatures, they have a high charge capacity, low probability of leakage and a long shelf life.

Batteries type D have the following specifications:

- Weight - 143 g (weight may vary depending on the type of battery, alkaline cells have a higher mass);

- height - 61.3 mm;

- diameter - 33.2 mm;

- supply voltage - 1.5 V (the battery is 1.2 V);

- current capacity depends on the type (salt, based on zinc chloride, alkaline) and from the manufacturer.

The main parameter of any battery is the capacity. The battery type D, unlike other types of batteries (type AAA, type AA, type C, etc.), has the highest value of this parameter. The capacity of the battery directly affects the duration of the battery. Therefore, this parameter is indicated in ampere / hours, that is, how many amperes the battery is able to deliver in one hour of operation. For example, if a D-type battery has a capacity of 1300 mAh (13 Ah / h), then it is able to emit 13 amps for one hour of operation. Batteries type D with the Alkaline marking (alkaline) have the largest capacity, but in this case, this parameter for the batteries of different manufacturers will be different. The highest capacity is inherent in the batteries "Duracell", "Varta", "GP", "Energizer". So, batteries type D "Duracell" have a capacity of 18000 mA (18A / h), "Energizer" - 17000mA (17A / h), "GP" - 13000 mAh (13A / h). However, batteries of this type have a fairly high price, about 3-4 dollars per piece.

Battery life depends on how much power the device / device they are inserted into, the duration of their operation, and the ambient temperature consume.

It is necessary to replace batteries all at once, it is not allowed to use old and new batteries at the same time, it is not recommended to mix different types of batteries (salt, alkaline). Because All this contributes to a decrease in the capacity of the battery and causes a depressurization, which as a result can lead to a malfunction of the device / device.