How to measure the capacity of No. 5 carbon battery

The capacity tester is used for the test capacity. The lithium battery is available online, and 1.5V does not seem to be available. The general measurement can use the multimeter's V gear position. Look at the voltage, the new battery voltage is 1.6V. Using the A gear position to measure the discharge capacity of the battery, but also short-circuit the battery, if the battery's discharge capacity is very strong, it will burn the table and the arc will hurt people.

Carbon battery full name: neutral zinc-manganese dry battery (zinc-manganese dry battery), is a primary battery in the chemical power supply, is a disposable battery.

Since this chemical power supply device has an electrolyte that is a non-flowable paste, it is also called a dry battery, which is said with respect to a battery having a flowable electrolyte. Carbon batteries are not only suitable for flashlights, semiconductor radios, tape recorders, cameras, and electronic clocks, toys, etc., but also for various fields in the national economy such as defense, scientific research, telecommunications, navigation,special, and medicine. Carbon batteries are mainly used for low-consumption electrical appliances, such as clocks, wireless mice, etc., large-capacity electrical appliances should use alkaline batteries, such as cameras, some cameras cannot support alkaline then you need to use nickel-hydrogen.

With the development of science and technology, carbon batteries have developed into a large family, and there have been many kinds so far. Common zinc-manganese dry batteries are common.

For the most used zinc-manganese carbon batteries, they can be divided according to different structures: paste zinc-manganese carbon batteries, cardboard zinc-manganese carbon batteries, etc.

Common models: No. 5 (AA or R6) No. 7 (AAA or R03) No. 1 (R20)

Internal:

Manganese dioxide and carbon powder mixed with ammonium chloride, paper with ammonium chloride, carbon rod (with conductive graphite) and insulator.

Outside:

Copper cap (positive), zinc plate (negative), packaging plastic

(1) Check whether the electrical and battery contacts are clean, if necessary, wipe them with a damp cloth, and then put them in the correct polarity after drying;

(2) Do not mix old and new batteries. The same type of battery but different types of batteries cannot be mixed.

(3) It is forbidden to regenerate the primary battery by heating, charging or other methods of the primary battery;

(4) It is forbidden to short-circuit the battery. Beware of infants playing with the battery, especially to prevent infants from swallowing the button battery.

(5) The switch should be cut off after use of the electric appliance, and the battery should be taken out for a long time.

Cathode material: MnO2, graphite rod

Anode material: zinc sheet

Electrolyte: NH4Cl, ZnCl2 and starch paste

The battery symbol can be expressed as

(-)Zn|ZnCl2, NH4Cl (mastic) ‖MnO2|C(graphite)(+)

Negative electrode: Zn=Zn2++2e

Positive electrode: 2MnO2+2NH4++2e=Mn2O3+2NH3+H2O

Total reaction: Zn+2MnO2+2NH4+=2Zn2++Mn2O3+2NH3+H2O

The electromotive force of the zinc-manganese carbon battery is 1.5V. Due to the production of NH3 gas by MnO2

Adsorption causes the electromotive force to drop faster. If high conductivity paste KOH is used instead of NH4Cl, the positive electrode material is changed to steel cylinder, and the MnO2 layer is close to the steel cylinder to form an alkaline zinc-manganese dry battery. Since the battery reaction has no gas, the internal resistance is low and the electromotive force is 1.5V relatively stable.

The carbon battery belongs to the primary battery in the chemical power source. It is a disposable battery. It uses manganese dioxide as the positive electrode and the zinc canister as the negative electrode to convert the chemical energy into electrical energy for the external circuit. In the chemical reaction, since zinc is more active than manganese, zinc loses electrons to be oxidized, and manganese gets electrons to be reduced.

It is recommended that electrical equipment be used (and should also be considered in the design). Try to use the mains (the power supply inside the household outlet) to reduce the use of the battery. A battery consumes a large amount of chemical raw materials and intermediate processes in the production process, while the used batteries are disposed of at their own expense to seriously pollute the environment. In order to protect the environment, used batteries should be recycled and concentrated in scientific and effective treatment to protect the environment in which humans depend and make nature more green and beautiful.

The full name of a carbon battery should be a carbon-zinc battery (because it is generally a carbon rod and a negative electrode is a zinc). It is also known as a zinc-manganese battery. It is the most common dry battery at present, and it is inexpensive and safe to use. Based on environmental considerations, since it still contains cadmium, it must be recycled to avoid damage to the global environment.

Alkaline batteries are suitable for large discharges and long-term use. The internal resistance of the battery is low, so the current generated is larger than that of the general zinc-manganese battery. The conductive material is a copper rod and the outer casing is a steel shell, which is safe and reliable. No need to recycle. Based on his environmental protection and the characteristics of large current, alkaline batteries are now more.

Advantages of carbon batteries: Carbon batteries are easy to use, they are cheap, and there are many types and prices.

Disadvantages of carbon batteries: they cannot be recycled, but the one-time investment is low, but the cumulative use cost is high. Cause damage to the global environment.

Carbon battery use Note: If you do not use the camera for a long time, it is not advisable to put the carbon battery in the machine. For a long time, some corrosive liquid will flow out inside the carbon battery. If these liquids flow into the camera, it is very easy to cause the component damaged.

The page contains the contents of the machine translation.