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SINO TECHNOLOGY

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 .

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SUNBEAM

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

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GREEN POWER

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

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DATAPOWER

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.

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SEONG-HEE

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

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STD

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.

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18650 battery 3.7v 2000mah.How to test the capacity of lithium batteries

release time:2024-01-05 Hits: Popular:AG11 battery

　　Capacity is the core parameter of lithium batteries, and lithium battery manufacturers generally have dedicated equipment for testing to ensure the quality of shipped products is qualified. However, for ordinary users, how do they know if their newly purchased lithium battery capacity is qualified?

　　Lithium battery processing manufacturers here introduce a relatively simple testing method: the multimeter testing method.

　　Taking a 1000mAh lithium battery as an example (in addition to the lithium battery and multimeter, a charger should also be prepared)

　　Firstly, it is necessary to theoretically understand the voltage value of lithium batteries:

　　1. Charging termination voltage: It is also the no-load voltage, which is the voltage that does not work, usually 4.2V.

　　2. Working/nominal voltage: It is also the load voltage, and the voltage during normal operation is generally 3.7V.

　　3. Discharge termination voltage: refers to the voltage at which the battery cannot operate, with different designs of 3V and 2.75V.

　　To start testing, first use a charger to fully charge the battery with a full charge voltage of 4.2V. Then use an external meter as a constant current load and discharge at 0.2C (i.e. 1000 * 0.2=200mA). Set the discharge voltage of the multimeter to 3V. If the discharge time reaches 5 hours, it indicates that the battery is qualified. Nowadays, lithium batteries can generally discharge up to 2.75V, and the discharge depth is the same as the previous 3V termination voltage, which is 80%. However, it can be discharged for 8 hours, indicating an improvement in the power of lithium batteries.

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