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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-04-07 Hits: Popular:AG11 battery
First, single-core lithium voltage: 3.7V or 4.2V. Different manufacturers mark is not the same, but the essence is the same. 3.7V refers to the typical value during smooth discharge, and 4.2V refers to the voltage at full charge.
Second, capacity: 2200mAh. Battery capacity refers to the ability of the battery to store charge, that is, mAh is a unit of measurement of battery capacity, not a unit of measurement of electrical energy. The movement of the charge generates an electric current and does work, which is called electrical energy, also known as electrical work. The descriptive unit of electrical work is commonly known as "degree", that is, (KWH). 1 degree =1=1000, the international unit is "" watt - hour, that is, one thousandth of a degree. Electrical power indicates the speed of consumption of electrical energy, P= U*I, P=1kW electrical appliances consume 1 KWH in an hour, that is, one degree of electricity.
But what does 2200mAh have to do with any of this? 2200mAh indicates that the battery can discharge for one hour at 3.7V voltage and 2200mA current.
mAh is a unit of measurement of battery capacity, which is actually the total number of electrons stored inside the battery for external use, 1C (Coulomb) is equivalent to about 6.25×10^18 electrons, that is, C/ Coulomb, international units.
1mAh = 0.001A*3600s = 3.6 = 3.6C. It can be seen that the 2200mAh, 3.7V battery, theoretically can output electrical energy W = 3.7V * 2.2A * 1h = 8.14.
Such a single cell has a capacity of 2200mAh and an electrical energy of 8.14. However, there is a problem, there is more than one cell in the battery pack, no matter how it is connected (series, parallel, series and mixed), the comprehensive internal resistance will certainly increase, which leads to the nominal comprehensive voltage reduction, so the battery capacity does not change, but the battery power quantity changes. For example, the three-core series battery pack is nominal 10.8V (due to technical limitations, different manufacturers are different), 2200mAh, then the battery pack capacity is 2200mAh, the electric energy is 10.8V * 2.2mAh = 23.76. In use, we want electrical energy, that is, actual electrical work, so the "battery pack capacity" performance parameters should focus on "electrical energy". While some battery packs only mark the capacity, the energy should be calculated at this time.
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