How much does a typical 3.7V lithium battery cost?mAh, generally speaking it is around 2600 mAh. Lithium battery is composed of single lithium batteries connected in series and. parallel. .
This cannot be unified. Each battery has different settings. Anyway, the specs are usually between 2000 and 3000. In this range, a 3.7V lithium battery is usually 2400 or. 2600mA.
The highest specification capacities are 2400 mAh and 2600 mAh (most are Sanyo batteries and most Sony laptops use 2600 mAh specifications).
The following takes the common 3.7V/2200mAh battery cell as an example.
1. The battery commonly known as a three-cell battery is a battery made up of three 18650 cells connected in series. The final parameters marked with the batteries are 11.1 V/2200 mAh. 11.1V = 3.7V × 3, the output current remains unchanged when connected in series.
There are also those marked 10.8 V, that is, a voltage drop occurs in a single cell, resulting in a reduction in the total voltage.
Most popular netbooks on the market now come with batteries meeting this specification.
There are two situations for two-cell and four-cell batteries: four in series and two in series and two in parallel.
The last marked parameters of the four batteries connected in series are: 14.8V/2200mAh. 14.8V = 3.7V × 4. When connected in series, the output current remains unchanged at 2200mAh.
Two series and two parallel means that four batteries are divided into two groups. Two pairs are connected in series then in parallel. The final marked parameters of the battery are: 7.4V/4400mAh. 7.4 V = 3.7 V × 2, the cOur output current is 4400 mAh = 2200 mAh × 2.
Most mid-sized laptops (12.1 inches, 13.3 inches, etc.) on the market now have batteries of this specification.
Advantages:
① Large capacity: a lithium battery cell has at least 1200mah, even 3600mah, while ordinary battery cells only have 'about 500;
< p>② High energy storage efficiency and good stability: the full output power can be maintained in an environment of 70°, and there are generally internal protection circuits to prevent the battery from running out③ There is almost no memory effect: during charging It is not necessary to discharge all the remaining power before use, it can be charged or discharged at any time , easy to use;
④High charge and discharge cycle life: lithium batteries can be cycled for tenses times thousands of times and have good resistance to high temperatures;
⑤Environmental protection, no toxic substances: non-toxic, harmless, non-polluting, RoHS certified quality.
Lithium batteries are usually not used in one, but in several strands. We often call them batteries. This type of battery often appears in our daily life, such as our laptop batteries, external batteries and electronic batteries. . Wireless digital equipment for printers, portable products, intercom communications, lithium batteries for POS machines, etc. At present, many batteries are basically The capacity is 2200 mah.
The difference between lithium batteries and lead acid batteries is: different weight, different lifespan and different battery capacity.
1. The weight is different. The pThe weight of the lithium battery is only 1/4 of that of the lead-acid battery of the same capacity, and the volume is only 1/3 of that of the lead-acid battery. lead acid battery of the same capacity.
2. The lifespan is different. The lifespan of lead-acid batteries is typically around 2 years, while lithium batteries are more durable, with a lifespan of 4-5 years. The lead-acid battery cycle is generally fully charged in 300 times, while the lithium battery is fully charged and discharged more than 500 times.
3. Battery capacity is different from lead-acid batteries, lithium batteries have higher average operating voltage and higher specific energy. In other words, for the same size rechargeable batteries, lithium batteries. have greater capacity.
Applications of lithium batteries:
Lithium batteries arewidely used in energy storage systems such as hydropower, thermal power, wind power and solar power plants. , and uninterrupted postal communications and telecommunications Power supplies, as well as power tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace and other fields.
Lithium-ion batteries have been widely used in portable devices such as laptops, cameras and mobile communications due to their unique performance advantages. The developed large-capacity lithium-ion battery has been tested in electric vehicles and has become one of the main power sources for electric vehicles in the 21st century. It will also be used in satellites, aerospace and energy storage.
With the shortage of energy and the pressure of protecting theenvironment in the world. Lithium batteries are widely used in the electric vehicle industry, especially the emergence of lithium iron phosphate batteries, which has promoted the development and application of lithium battery industry.