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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 .
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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:2024-01-30 Hits: Popular:AG11 battery
1. The height of the battery without a board is 65mm, while the height of the battery with a board is 69-71mm.
2. Discharge to 20V, if the battery does not discharge when it reaches 2.4V, it indicates that there is a protective board.
3. If there is no response from the battery after 10 seconds of touching the positive and negative stages, it indicates that there is a protective plate. If the battery is hot, it means there is no protective plate.
Attention: The third point of testing should not be conducted by professionals, as it may cause a powerful explosion and irreversible personal harm, especially when encountering inferior batteries.
How to identify whether 18650 lithium batteries have protective plates
Method 1: The length of a 18650 lithium battery is 650mm, and if it exceeds 1mm, a circular protective plate is often installed at the negative electrode;
Method 2: Use a 10A or 20A ammeter to instantly test the short-circuit current of the 18650 lithium battery. If the ammeter shows a reading that quickly turns to zero, it indicates that the 18650 lithium battery has a protective plate. If the ammeter shows a large reading or overload, the battery does not have a protective plate or the protective plate is invalid.
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