The 3r12 battery is a square cell consisting of three energy sources with a nominal value of 1.5 volts. Its shape is highly unusual. Its production began back in the Soviet Union. Also read the article. USSR batteriesThere is information about this size there.
Characteristics of the 3r12 battery
This power source consists of three R12 batteries connected in series. They are a bit similar to AA batteriesAll of them are enclosed in a square or rectangular plastic case. Two metal plates protrude from one end. These are the positive and negative terminals. The short plate is the positive terminal. The long one is the negative terminal, or cathode.
Voltage is 4.5 volts. Under load, it produces 3.7-38 V.
Operating temperature from -20 to +35 degrees Celsius.
Chemistry: salt, carbon-zinc, zinc carbon. 3LR12 is alkaline.
The manufacturer's warranty can be up to 24 months.
Capacity The capacity of a salt cell is 0.5-0.7 A/h. For alkaline cells, it can reach 4800 mAh.
Weight 111 – 170 grams.
Size: 62mm(width)×67mm(height)×22mm(thickness).
At the moment, dimensions may vary depending on the manufacturer.
Such energy sources can be stored alkaline for up to 10 years, saline2 years.
A Brief History
In the 1950s and 1960s, the battery was called KBS. This stands for "dry pocket battery." Then it was renamed 3336, Rubin (alkaline cell with a large capacity) and the Planet. Among ordinary people, it was nicknamed the "square thick battery" or the "flat battery." Some called it the "lantern battery." In English, it's spelled "Lantern Battery."
IN USSR battery The 3r12 was manufactured for both winter and summer use. Here are some examples of older power sources:
- 3336L
- KBS-L-0.5
- 3,7-FMC – 0.50
- 3336 X
- KBS X 0.7
- KBS-T- 0.5
- 4.1-FMC-0.50
These batteries were most often used in flashlights and radios. They were especially prized by radio enthusiasts.
The very first 3r12 batteries of this type were produced in cardboard containers. The contact points were filled with standard hardening resin. Currently, the housing is made of plastic.
At that time, the 2SG-3 lead-acid battery was produced in this size. It had a charge rate of 4 volts and a capacity of 1.3 A/h.
In the old days, a 3R12 battery cost 17-30 kopecks. Now, their price starts at 50 rubles per battery.
Application
- Toys
- Radio receivers
- Avometers
- Flashlights
- Measuring instruments
Advantages and disadvantages of a square battery
Salt 3R12 have the following disadvantages:
- Voltage falling during operation.
- A small warranty of about 2 years.
- Decreased specific capacity at low ambient temperatures. May stop working.
- Under high loads over 100 mAh it loses its functionality.
- It has a high self-discharge rate of 20% per year. This means that even if you don't use it, it will continue to lose power.
Its main advantages are its low cost and partial charge recovery after disconnecting from the load.
It is recommended to use 3r12 in devices with low current consumption.
Features of 3R12 large square alkaline batteries:
- Capacity up to 48 Ah.
- High power.
- Low self-discharge means that they can be stored for a long time.
- They work in sub-zero temperatures.
The only drawback is their cost.
Do not disassemble, dispose of in fire, short-circuit, or expose to high temperatures. Do not mix different types of batteries.r12. Also, do not mix charged and discharged batteries together.
Analogues of the square battery 3r12 4 5v
The only equivalent to 3R12 is the same, but alkaline, power source. It can also be replaced with conventional ones. AA batteriesBut you'll need an adapter. The key is to ensure a consistent connection. You can create a similar power supply yourself. And use regular paper as the housing.
The voltage of a homemade 3r12 battery can jump from 3.6 to 4.5 volts.
Manufacturers
- Minamoto 3r12 12
- Panasonic
- Duracell
- Varta
- Space
- Camelion
- Satellite
- Roboton
- Daewoo
- Trophy
- Sony
- GP
- Energiazer
Avoid purchasing batteries made in China. Always check the country of origin before purchasing.
Charger
This is a disposable one. galvanic power supplyDo not charge the battery from the rear. Only rechargeable batteries are allowed. Attempting to charge the battery may result in electrolyte leakage or an explosion.
If you need a square 9v battery, there is no such thing. But rectangular crown There is.
A photo of a square battery for a Soviet flashlight
This is a Soviet flashlight with a 3r12 square battery.
This type of energy source is still popular today!
