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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:2024-06-20 Hits: Popular:AG11 battery
The upper and lower test temperatures represent the highest and lowest temperatures on the surface of the battery cell when the battery can use the upper limit charging voltage and maximum charging current. The upper and lower limit test temperatures are determined based on the material characteristics of lithium batteries. The IEC 62133 Ed2 discussion draft and JIS C 8714 propose upper and lower limit test temperatures of 45 ℃ and 10 ℃, respectively, which are based on the common material characteristics of lithium-ion batteries on the market and cannot represent all lithium batteries. JIS C 8714 proposes that if new upper and lower limit test temperatures are needed, certain tests need to be conducted and additional information needs to be provided. The experimental investigation includes: the structural stability of the positive electrode material, the structural stability of the electrolyte, and other material characteristics. It is necessary to ensure the safety of the charged battery at the new upper limit test temperature, and add 5 ℃ to the new upper limit test temperature to meet the charging conditions of JIS C 8714 clause 5.1, and comply with the test requirements of clauses 5.2-5.5; Based on the lithium ion absorption of the negative electrode material and the lithium ion mobility of the electrolyte (corresponding to temperature), it is necessary to ensure the safety of the charged battery at the new lower limit test temperature, and add -5 ℃ to the new lower limit test temperature to apply the charging conditions of 5.1, and meet the test requirements of 5.2 to 5.5. Similar requirements are also included in the discussion draft of IEC 62133 Ed2
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