How do you divide the size of the battery?

Different types, brands of dry battery capacity vary widely,

The 5th zinc hard battery may only be about 500mAH, while the good quality 5th alkaline battery may have about 2000mAH.

Disposable batteries generally do not have a nominal battery capacity, while rechargeable ones will have a nominal capacity.

First, the common battery model, size comparison table

Flat head means that the positive pole of the battery is flat, there is no protrusion, and the battery core used for spot welding of the battery pack is generally used. The same type of pointed tip (can be used as a single battery), the height is 0.5mm. . By analogy, I will not explain them one by one. Also, when the battery is used a lot, the main models such as "AAA, AA, A, SC, C, D, N, F" are also regularly scored "1/3, 2/3, 1/ 2,2/3,4/5,5/4,7/5", these scores indicate the corresponding height of the pool body. For example, "2/3AA" means that the height is 2/3 of the rechargeable battery of the general AA battery. Another example is "4/5A" which means that the high battery is a 4/5 rechargeable battery of the general A battery.

Common battery model and size introduction

Second, lithium ion battery core model, size

(1) Cylindrical lithium-ion battery cells: usually expressed by five digits, the first two digits refer to the diameter of the cell body, and the last three digits refer to the height of the cell body. For example, 14500 refers to the AA battery, that is, about 14mm diameter, 50mm high. . Common models: 14500, 14650, 17490, 18500, 18650, 26500.

Common BAK, Sanyo cylindrical battery specifications:

BAK 186502200mAh3.7V, BAK 186502600mAh3.7V, BAK 186502000mAh3.6V ternary long life

Sanyo 186502100mAh3.7V, Sanyo 186502500mAh3.7V, Sanyo 186501500mAh3.7V18650

(2) Square type lithium ion battery cells: usually expressed by six digits, respectively representing the thickness, width and height of the battery, in units of millimeters, for example, 103450, ie 10 (thickness) x 34 (width) x 50 (height) mm. If the thickness value is greater than the width value, the thickness is *0.1, for example 433861 or 4.3 (43*0.1) x 38 x 61 mm.

Common BAK, Sanyo square battery specifications:

BAK 523450A1000mAh3.7V, BAK 063450A1200mAh3.7V, BAK 633770A2020mAh3.7V

Sanyo UF103450P1880mAh3.7V, Sanyo UF653450R1100mAh3.7V103450

Common battery model and size introduction

Common battery model and size introduction

battery model

China is named after international conventions. Cylindrical battery models are classified as:

AAA, AA, A, SC, C, D, F type, a total of seven

No. 5 and No. 7 are only different in size. Generally, No. 5 is called AA, and No. 7 is called AAA.

The standard size of No. 5 is: battery height 49.0 ± 0.5mm, diameter 16.8 ± 0.2mm.

The standard size of No. 7 is: battery height 48.0 ± 0.5mm, diameter 14.1 ± 0.2mm.

Made of No. 5 and No. 7 have dry batteries, lithium batteries , nickel hydrogen batteries and nickel cadmium batteries.

Common alkaline batteries (such as Nanfu Ju Neng ring, Duracell, etc.) 5 and 7 voltage are 1.5V, capacity 5 is about 2400mAh, also called LR06, 7 is about 1300mAh. It is also called LR03.

In fact, the battery has other numbers such as: No. 1 (D type), battery height 59.0 ± 0.5mm, diameter 32.3 ± 0.2mm, like used in the old-fashioned flashlight, also called large battery.

There No. 2: C type, cell height 49.5 ± 0.5mm, a diameter of 25.3 ± 0.2mm, in the rare, but some of the lithium battery which has a lot.

Each country has a standard for dry battery models, generally classified according to electrolyte and shape. The 5th and 7th batteries are the standard of our country, and the AA and AAA are the American standards, which actually refers to one thing. The following is a brief description:

International Electro technical Commission China Japan United States Germany

R401 A battery / N0.6R40 (EMT)

R201 battery UM-1DR25 (JaT)

R142 battery UM-2CR14 (ET)

R104 battery / (BR) R10 (CT)

R65 battery UM-3AAR6 (AaT)

R037 battery UM-4AAAR03

Seven kinds

The details are as follows:

1 Introduction

Battery means a space in a cup, tank or other container or composite container containing an electrolyte solution and a metal electrode to generate electrical current, a device capable of converting chemical energy into electrical energy. It has a positive electrode and a negative electrode. As technology advances, batteries are broadly referred to as small devices that generate electrical energy, such as solar cells. The performance parameters of the battery mainly include electromotive force, capacity, specific energy and resistance. By using the battery as an energy source, it is possible to obtain a current with stable voltage, stable current, stable power supply for a long time, and little influence from the outside, and the battery has a simple structure, is convenient to carry, and is easy to operate in charge and discharge, and is free from external climate and temperature. The impact, stable and reliable performance plays a big role in all aspects of modern social life.

2, rated capacity

Under the conditions specified by the design (such as temperature, discharge rate, termination voltage, etc.), the minimum capacity that the battery should be able to discharge, in ampere-hours, is indicated by the symbol C. The capacity is greatly affected by the discharge rate, so the discharge rate is often indicated by the Arabic numerals in the lower right corner of the letter C, such as C20 = 50, indicating that the capacity at the 20 o'clock rate is 50 ampere-hours. The theoretical capacity of the battery can be accurately determined from the amount of the electrode active material in the battery reaction formula and the electrochemical equivalent of the active material calculated according to Faraday's law. Due to the side reactions that may occur in the battery and the special needs of the design, the actual capacity of the battery is often lower than the theoretical capacity.

3, rated voltage

The typical operating voltage of a battery at room temperature is also known as the nominal voltage. It is a reference when using different types of batteries. The actual operating voltage of the battery will vary depending on the conditions of use. The open circuit voltage of the battery is equal to the difference between the balanced electrode potentials of the positive and negative electrodes. It is only related to the type of electrode active material, regardless of the amount of active substance. The battery voltage is essentially a DC voltage, but under certain special conditions, the phase change of the metal crystal or some phase-forming film caused by the electrode reaction causes a slight fluctuation of the voltage. This phenomenon is called noise. The amplitude of the fluctuation is small but the frequency range is very wide, so it can be distinguished from the self-excited noise in the circuit.