There are many different standard sizes of batteries, but if an element of increased capacity is needed, then you should pay attention to products of type D (according to GOST 373). Such batteries can be used in household appliances, so for the optimal use of electrical devices, you should understand how these elements differ from each other.
Content
Specifications
This type of battery is easy to identify visually. Type D power supplies are a large barrel that has the following characteristics:
| Options | Voltage | Yesk, mAh * |
|---|---|---|
| Batteries | ||
| R20 (Saline) | 1,6v | 4000 |
| LR20 (Alkaline) | 1,6v | 5500-16000 |
| Batteries | ||
| HR20 (Ni-Mh) | 1,2v | 3000-10000 |
| KR20 (Ni-Cd) | 1,2v | 2000-5000 |
| Li-Ion (32600) | 3.6 - 3.7v | 3000-6000 |
| Diameter | 34,2 | |
| Height | 61,5 | |
| Weight | 66-150 | |
| Names | Type D, R20, 373, Mono, UM 1 | |
* Technologies are developing very quickly, so the maximum capacity may be higher than indicated in the table.
The size is the same for all models of batteries of this type, but the capacity and voltage can vary significantly depending on the technology used, in the manufacture of the cell. For the same reason, mass deviations can also be observed.
Varieties and their features
Class D products may vary significantly in manufacturing technology. The main varieties of such batteries are the following models:
D-R20 Saline (Coal-zinc) (1.5 v). The cheapest battery option of this type. R20 have a small capacity and unsatisfactory at low air temperatures, so its use is justified only if the electronic device is operated at positive temperature. At the same time, too powerful a consumer of electricity will quickly render this model unusable.
D-LR20 Alkaline (Alkaline) (1.5 v). Lr20 It has significantly better electrical capacities at a standard voltage of 1.5 Volts, which allows more efficient use of the power source in high-power devices. The cost of the product is also several times higher than the price of conventional salt products.
D-HR20 NiMh (nickel metal hydride) (1.2 v). This “barrel” model is a battery, therefore, despite the higher cost of the product, it is popular among consumers who care about the rational use of time and money. A nickel metal hydride battery has a slightly lower voltage value, but a higher connection can be achieved with a series connection.
D-KR20 NiCd (cadmium nickel) (1.2 v). Nickel-cadmium batteries are very reliable batteries that can withstand multiple charge cycles. Despite the lower rated voltage (1.2 v), a higher value of this parameter can be obtained by connecting the elements in series. An important advantage over other “barrels” of this model of batteries is that the cell can fully function at an operating temperature of minus 50 to plus 60 degrees Celsius.
Li-ion (3.6v-3.7v). This type of Size D battery is the most durable and allows you to give more current. The number of reloading operations can reach 3,000, so despite the relatively high cost of such an element, its operation will be much cheaper.
Any of the above "barrels" can be installed in a device designed to work with this type of power source.
Where type D batteries are used
Batteries and accumulators of this type can be used in the following devices and devices:
- High power hand lanterns
- Kids toys.
- Walkie-talkies and radios.
- Electronic musical instruments.
In addition, batteries of this type can be used in professional measuring instruments, for example, in Geiger counters.
Popular manufacturers and their features
The release of type D power supplies has been established by many electronics manufacturers, but the following companies are most popular:
- Energizer - is a leader in the production of alkaline batteries, among which "barrels" occupy a considerable percentage. The batteries and accumulators of this manufacturer are of high quality and endurance, which allows them to be used in devices that consume a large amount of electricity.
- Duracell - The products of this company also deserve attention, because in terms of endurance and capacity the elements are not inferior to other manufacturers, and in terms of price and quality ratio these elements will be beyond any competition. Alkaline D-elements of this brand can be successfully used in the most powerful stand-alone devices.
If for some reason it was not possible to purchase one of the above elements, then with the same efficiency you can use the products of such companies as: Panasonic, Sony or Varta.
What to look for when choosing
The first thing you should pay attention to is the size, in addition to the standard barrel of type D, there is even a little smaller type C. The voltage also deserves attention. For Ni-Cd and Ni-Mh batteries it is 1.2v, for batteries it is 1.5v, for Li-Ion batteries it is 3.7v. With a lack of voltage, the device may not work, and with an excess burn out. Therefore, it is important to carefully read the instructions for the device.
All power supplies have an expiration date, so you should try to purchase with the most recent release dates. There should be no dents, rust, leaks or other damage on the case. The packaging must be sealed.
The purchase of counterfeit products will also negate all the efforts to select the item described above, so the purchase of batteries should be carried out only in trusted locations or in trade organizations that are trustworthy.
