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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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18650 li ion rechargeable battery

18650 lithium battery 3.7V6000ma how much charger

Use a charger with an output voltage of 5.0v and an output current of 1-2A. The larger the output current, the shorter the charging time. For example, the charging current of 2A can be fully charged in more than 3 hours. If it is 1A, you need 6 chargers. About half an hour. Large-capacity lithium batteries have low internal resistance, so a higher charging current is better.
How many watts of 6V photovoltaic panels are needed for a solar 25-watt light source 3.7v6000mah18650 lithium battery pack?

A regular 18650 lithium battery has a capacity of 1.2ah to 3.3ah (1ah is equal to 1000mah), the price of a 1.2ah battery is 1.5 yuan, and the price of a 3.3ah battery is more than 12. Most of these cheap products use the common specifications of 1.5ah to 2ah (the price is 3.5 yuan) ,

Let’s talk about the LED power. Generally, if one or more parallel groups are used for power supply, the LED power will not be too large. Ordinary 5730 lamp beads have a specification of 0.2w/0.5w, and the power can be calculated based on the number of beads.

The power divided by 3.7v (battery voltage) is equal to the current, and the battery capacity divided by the current is equal to the use time.

The charging time needs to be less than the daily light time (8.30 am to 17:00 pm), the charging current is equal to the battery capacity/(light time-2 hours), and the final calculated solar panel power is equal to the current multiplied by 6v

Product parameter