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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:2024-04-15 Hits: Popular:AG11 battery
Lithium battery capacity
The capacity unit of the battery is coulomb (C) or ampere-hour (Ah). There are three specific terms for characterizing battery capacity characteristics:
a. Theoretical capacity. Refers to the amount of electricity calculated according to the number of electrochemical equivalent of the active substance participating in the electrochemical reaction. In general, theoretically 1 electrochemical equivalent material will emit 1 Faraday charge, that is, 96,500C or 26.8Ah(the amount of 1 electrochemical equivalent material is equal to the atomic weight or molecular weight of the active material divided by the number of electrons in the reaction).
b. Rated capacity. In the design and production of batteries, the minimum amount of electricity that should be released by the battery under specified discharge conditions is specified or guaranteed.
c. Actual capacity. Refers to under certain discharge conditions, that is, under a certain discharge current and temperature, the battery can be released before the termination voltage.
The actual capacity of the battery is usually 10% to 20% larger than the rated capacity.
The size of the battery capacity is related to the number and activity of active substances on the positive and negative electrodes, and also to the structure and manufacturing process of the battery and the discharge conditions (current, temperature) of the battery. The comprehensive index of factors affecting battery capacity is the utilization rate of active substances. In other words, the more fully the active substance is used, the higher the capacity given by the battery.
The utilization rate of active substances can be defined as:
Utilization ratio =(actual battery capacity/theoretical battery capacity) x 100%
Or, utilization rate =(theoretical dosage of active substance/actual dosage of active substance)×100%.
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