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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.
source:Industry News release time:2024-01-26 Hits: Popular:AG11 battery
Lithium ion batteries are a common type of battery that we often use in our daily lives, but do you know the main performance indicators of lithium batteries? Below, we will summarize the main performance indicators of lithium batteries for new energy manufacturers.
The capacity of the battery
The capacity of a battery can be divided into rated capacity and actual capacity. The rated capacity of a battery refers to the amount of electricity that the battery should provide when discharged at a 5-hour rate to the termination voltage under an ambient temperature of 20 ℃± 5 ℃, represented by C5. The actual capacity of a battery refers to the actual amount of electricity released by the battery under certain discharge conditions, mainly influenced by the discharge rate and temperature (therefore, strictly speaking, the battery capacity should indicate the charging and discharging conditions).
Capacity units: mAh, Ah (1Ah=1000mAh).
Internal resistance of battery
Internal resistance of a battery refers to the resistance experienced by the current flowing through the battery during operation. It consists of two parts: ohmic internal resistance and polarization internal resistance. A high internal resistance value of the battery can lead to a decrease in the discharge working voltage and a shortened discharge time. The size of internal resistance is mainly influenced by factors such as the material, manufacturing process, and battery structure of the battery. The internal resistance of a battery is an important parameter for measuring its performance.
voltage
Open circuit voltage refers to the potential difference between the positive and negative terminals of a battery when there is no current flowing through the circuit and it is not in operation. In general, the open circuit voltage of lithium-ion batteries is around 4.1-4.2V after being fully charged, and around 3.0V after discharge. By detecting the open circuit voltage of the battery, the state of charge of the battery can be determined.
Working voltage, also known as terminal voltage, refers to the potential difference between the positive and negative terminals of a battery when there is current flowing through the circuit during operation. In the discharge state of the battery, when the current flows through the inside of the battery, there is no need to overcome the resistance caused by the internal resistance of the battery, so the working voltage is always lower than the open circuit voltage, and the opposite is true during charging. The discharge working voltage of lithium-ion batteries is around 3.6V.
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