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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:2024-08-29 Hits: Popular:AG11 battery
Analysis of no. 7 alkaline battery capacity
Battery capacity is one of the important performance indicators of lithium-ion batteries. It indicates the amount of electricity stored in lithium-ion batteries under certain conditions. It is usually measured in Ah (ampere-hour) or mAh (milliampere-hour) (1Ah=1000mAh). The important method for obtaining no. 7 alkaline battery capacity parameters is to integrate the current over time when the battery is discharged from 100% SOC to 0% SOC (that is, within the detection voltage range), that is, where Q is the battery capacity (Ah), I is the current (A), and t is the detection time (h). 1 milliampere-hour is equivalent to 3.6 coulombs.
In general, capacity data can be read directly in the detection system software. For the battery materials being tested, capacity analysis generally requires the determination of three data: first charge capacity, first discharge capacity (positive electrode material), and reversible capacity.
a. The first charge capacity is the charge capacity of the no. 7 alkaline battery at the end of the first charge;
b. The first discharge capacity is the discharge capacity of the no. 7 alkaline battery at the end of the first discharge;
c. The reversible capacity is the capacity value after the battery cycle stabilizes (the test value at room temperature is also called the rated capacity)
Generally, the discharge capacity of the 3rd to 5th week is selected, and sometimes the discharge capacity after 10 weeks may be selected. In practical applications, the analysis of the gram capacity, surface capacity and volume capacity of the test material or electrode is more valuable for reference. For example, the gram capacity is the discharge capacity per unit mass of active material, C=Q/m; the surface capacity is the discharge capacity per unit area of the test electrode, C=Q/S; the volume capacity is the discharge capacity per unit volume of the electrode, C=Q/V. In the formula, C is the discharge capacity mAh/g (milliampere-hour per gram), mAh/cm2 (milliampere-hour per square centimeter) or mAh/cm3 (milliampere-hour per cubic centimeter), Q is the discharge capacity mAh (milliampere-hour), m is the mass of the active material g (gram), S is the area of the test electrode cm2 (square centimeters), and V is the volume of the test electrode cm3 (cubic centimeters). The gram capacity parameter is more intuitive for comparing the performance of test materials, while the surface capacity and volume capacity are more valuable for reference when the positive and negative electrode capacities are matched in the actual application of the test materials. It is recommended to provide information on all three specific capacities when publishing an article.
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