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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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Sino Technology Manufacturer Group co.,ltd

18650 battery 3.7v 2200mah

Model: 18650

Capacity: 2500mAh

Discharge rate: Continuous 8C, Instantaneous 30A

Pole ear: Bipolar ear

Internal resistance: <18mΩ

Minimum capacity: 2450mAh

Discharge cut-off voltage: 2.5V

Cell weight: 45g

Application:

Ebike, scooters, solar panel, power storage, flashlight, power tools, medical equipment, motorcycle, digital products etc.

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　　18650 lithium ion battery welding method

　　We understand that the shell of the 18650 lithium-ion battery is a steel shell, and without a dedicated battery spot welder, it is difficult to weld with an electric soldering iron. Of course, now there is also a strong battery flux, which can easily solder 18650 batteries with an ordinary electric soldering iron. But this kind of powerful flux is corrosive, not only corroding the battery casing and positive electrode, but also corroding the tip of the soldering iron. The welding method of 18650 lithium-ion battery is as follows:

　　1. Use a knife or file to scrape off the part to be welded;

　　Low temperature lithium iron phosphate battery 3.2V 20A -20℃ charge, -40℃ 3C discharge capacity ≥70%

　　Charging temperature: -20~45℃ -Discharging temperature: -40~+55℃ -40℃ supports maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate≥70%

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　　2. Since the material of the positive electrode is difficult to tin, it is better to grind it a little;

　　3. In order to prevent the high temperature from damaging the 18650 lithium-ion battery, wrap the battery with a damp cloth;

　　4. Use one hand to hold the battery with solder wire, and the other hand to solder it with a soldering iron with sufficient temperature to tin the positive electrode of the battery.