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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:2023-10-11 Hits: Popular:AG11 battery
1. Battery brand
Regarding brands, internationally renowned brands such as Sanyo, Samsung, SONY, LG, etc. are currently reliable.
Sanyo and LG mainly focus on conventional applications, such as strong flashlights, power banks, and laptop batteries.
SONY is professional, specializing in high power and current. Taking VTC4 as an example, with a discharge current of up to 30A, it can easily handle electronic cigarettes, toy aircraft models, etc.
2. Nominal capacity
The nominal capacity of an 18650 battery is related to its endurance, expressed in "mAh". The higher the capacity, the stronger the endurance. For example, a 2800mAh battery can discharge continuously for 2 hours at a current of 1.4A.
At present, the phenomenon of virtual battery capacity is very serious. The vast majority of domestic 18650 lithium batteries with a capacity exceeding 3000 are virtual. Currently, only Panasonic has the highest capacity and can buy 3400mAH, while domestic batteries generally have a capacity between 2200-2800mAH. At present, apart from buying large battery cells to ensure that there is no or very little virtual capacity, ordinary users can only use a discharge meter to test the capacity.
In addition to false labeling, it is also important to be careful not to purchase disassembled batteries when purchasing. Disassembled batteries are usually removed from obsolete battery packs and are nearing retirement, so there is no need to waste money~
3. Continuous discharge current (CDR)
The continuous discharge capacity is represented by the number C, and the continuous discharge current=the continuous discharge capacity C number × Capacity.
For example, if the capacity of an 18650 battery is 2800mAh and the continuous discharge capacity is 0.5C, then the continuous discharge current is 1.4A. If the discharge exceeds 1.4A for a long time, it will seriously affect the battery life and may pose risks such as overheating, combustion, and explosion. The parameter of continuous discharge capacity is usually written on the battery introduction page, and it is important to pay attention to it. Some parameters directly indicate the continuous and maximum continuous discharge current.
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