How to choose 18650 lithium-ion battery with high quality ...

Web:www.topbandbattery.com     Date:-05-20

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lithium batteries are mostly used in notebook computer batteries due to their large capacity per unit density. In addition, because has very good stability at work, they are widely used in major electronic fields: commonly used in high-end strong light Flashlights, portable power supplies, wireless data transmitters, electric thermal clothing, shoes, portable instruments and meters, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.

So how to choose a high-quality lithium-ion battery? Choose the most suitable lithium battery according to our electrical equipment, such as the appropriate brand, voltage, capacity, continuous discharge rate, battery life, etc. The most important thing is to choose a battery with high safety. Below we will introduce them in detail:

Brand

As for brands, the most reliable ones are Sanyo, Samsung, SONY, Topband,LG and other internationally renowned brands. Sanyo and LG focus on routines, and their applications are mainly bright flashlights, power banks, and laptop batteries. SONY professional, the main power and high current. Taking VTC4 as an example, the discharge current can reach 30A, and it can easily handle electronic cigarettes, toys, etc.

Nominal capacity

The nominal capacity of the battery is related to the battery life. The unit is "mAh". The higher the capacity, the stronger the battery life. For example, a mAh battery can be continuously discharged for 2 hours at a current of 1.4A.

Continuous discharge current (CDR)

Continuous discharge capacity is expressed by C number, continuous discharge current = continuous discharge capacity C number × capacity. For example, the capacity of a battery is mAh and the continuous discharge capacity is 0.5C, then the continuous discharge current = 1.4A. If the discharge exceeds 1.4A for a long time, the battery life will be seriously affected, and there may be dangers of overheating, even burning, explosion, etc. .

Internal resistance

The internal resistance is the resistance of the battery itself. The smaller the internal resistance, the lower the consumption and the stronger the discharge capacity. The parameter of internal resistance is usually written on the battery introduction page. You should also pay attention to it when purchasing. Try not to use it. Buy more than 100mΩ or more cells. If you use multiple s in series, you must buy batteries of the same brand and type, otherwise batteries with large internal resistance and low capacity will become a short board.

Temperature

Temperature is a major factor affecting the life of lithium battery. The higher the temperature, the faster the battery will age, and the higher the temperature, the greater the damage to the battery.

Pointed and flat

The lithium battery also has a flat head and a pointed head. The positive electrode on the left side of the picture below has a protruding point, and the positive electrode on the right has no protrusions. It is a flat head. In general, I recommend buying pointed batteries to ensure compatibility with more devices and uses. Usually, the positive and negative poles of the flashlight are designed with springs, which can be retracted and can be used whether it is a pointed or flat battery. But if you want to use a flat head battery in series, the positive pole of the flat head cannot touch the negative pole of the other battery.

With and without protective plate

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The pointed has a protective plate, and the flat does not have a protective plate. The lithium battery with a protective plate is a few mm higher than the lithium battery without a protective plate, and the price is slightly more expensive, but it is safer and more versatile. The lithium battery with a protective plate can prevent the battery from being over-discharged. Lithium batteries are hot, and even dangerous to burn and explode.

Among all 18,650 lithium-ion batteries, LiSOCl2 has the highest energy density and can last up to 15 to 20 years. This type of battery is particularly suitable for devices with small and relatively short supply currents. The ambient resistance of the battery is also good due to its long battery life and low self-discharge rate.

Shenzhen Topband Battery Co., Ltd.&#;established in , is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.

Hello Particle community,

I have an Electron that i want powered by a Li-SoCl2 battery instead of the LiPo, as a low self-discharge rate is important.

I was looking at this battery:

SL/T | Tadiran Lithium Thionyl Chloride 3.6V, DD DD Battery | RS

Buy Tadiran Lithium Thionyl Chloride 3.6V, DD DD Battery SL/T. Browse our latest Speciality Size Batteries offers. Free Next Day Delivery available.

Apperently the Electron 2G uses a peak current of mA when sending packages. But the battery only has a pulse current capability of mA. I've read something about putting a capacitor in parrallel with the battery to handle the current peaks, but how do i find out what capacitor i need for this to function?

The datasheet says 470uF to uF depending on the batterys ability to deliver peak current, so what capacitance should i get for this battery and how do you calculate it?

Running the above battery in parrallel with the mAh LiPo won't work, right?

EDIT:
I just saw this thread:

Hardware

Why can&#;t you make room? You better oversize the battery to be safe anyway. Don&#;t forget about the sleep current of the Electron.

But it doesn't answer my question i think.

i also saw this link:

How long are the peak pulses of mA current use on the Electron 2G?

Thanks in advance,
Michael

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