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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:2024-03-14 Hits: Popular:AG11 battery
18650 lithium 3.7 battery protection board principle
18650 lithium 3.7 battery protection board is mainly an integrated circuit board that protects rechargeable (generally lithium batteries). The reason why lithium batteries need protection is determined by its own characteristics. Since the material of the 18650 lithium 3.7 battery itself determines that it cannot be overcharged, overdischarged, overcurrent, short-circuited, or charged and discharged at ultra-high temperatures, the 18650 lithium 3.7 battery components will always appear with a delicate protective board and a current fuse.
Due to the chemical characteristics of lithium batteries, during normal use, chemical positive reactions in which electrical energy and chemical energy are converted into each other occur internally. However, under certain conditions, such as overcharging, overdischarging and overcurrent will cause internal damage to the battery. A chemical side reaction occurs. When the side reaction intensifies, it will seriously affect the performance and service life of the battery, and may produce a large amount of gas, causing the internal pressure of the battery to rapidly increase and then explode, causing safety issues.
Therefore, all lithium batteries require a protection circuit to effectively monitor the charging and discharging status of the battery, and to shut down the charging and discharging circuit under certain conditions to prevent damage to the battery.
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