18650 protected battery

How to identify and select 18650 protected battery

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18650 battery market is hot and widely used, especially 18650 lithium-ion batteries, other types of 18650 batteries have slowly started to withdraw from the market.

Lithium-ion 18650 has 18650 protected battery and unprotected 18650 battery, so what is the 18650 protected battery protected board, and how to identify whether 18650 with protected board, this article will show the answer, also teach everyone to choose the best 18650 protected battery supplier.

lithium 18650 protection battery applications

Lithium 18650 protected battery is a type of battery with a pointed tip and is found in many portable devices such as flashlight batteries, power tool batteries, electronic cigarette batteries, remote control batteries, etc.

The 18650 protected battery can also be connected in series and parallel to provide the required power to the device. Like flashlights with spring-loaded design, both tip and flat batteries can be used, most people choose tip 18650 protected batteries to ensure compatibility with more devices and applications.

Are lithium 18650 protected batteries good

Lithium 18650 protected battery in the protection board, mainly composed of electronic circuitry, always monitor the voltage and current of the battery cell, timely control of the current circuit on and off.

Why add lithium battery protection board, because there are many considerations when using lithium batteries, to avoid overcharging and overdischarging, but also can not overtemperature and overcurrent, improper use of the battery will also have a failure, may also cause a fire and other problems.

Why the lithium ion battery needs to add a protective board

So add a protection plate 18650 protected battery is a safety guarantee, in the charging and discharging time, the protection plate will ensure that the voltage will be within the specified value, control the lithium battery core in the specified working environment, greatly reducing the risk of overvoltage and so on.

Without the addition of the protection plate battery, when encountered overcharge, overdischarge, overcurrent situation is very easy to damage, easy to produce the explosion of the situation.

18650 battery protected board components

The protection function of Lithium 18650 protected battery is done by resistors, capacitors and control IC, MOS switch devices and auxiliary devices such as FUSE, NTC, PTC, ID and memorizer.

The control IC in the protection board is used to control the MOS switch to make the battery conductive to the external circuit, and when the battery voltage or circuit current exceeds the specified value, it automatically disconnects the control MOS switch to protect the battery.

18650 protected battery vs unprotected 18650 battery

The 18650 protected battery is suitable for all groups of people. The specific protection effect is that when 18650 protected batter is nearly used, the voltage reaches a minimum specified value, the protection plate stops working automatically, so that the battery can not discharge, and the equipment is shut down, which forms an overdischarge protection effect.

Or when charging 18650 protected battery to full charge and reaching the highest voltage, 18650 protected battery will automatically power off and will not continue charging, which is the effect of overcharge protection.

18650 protected battery vs 18650 unprotected battery

When the 18650 protected battery is accidentally short-circuited, the protection board will automatically shut down immediately, and the positive and negative terminals will not be energized when they meet together. Also, when the 18650 protected battery is discharged, the protection board will automatically shut down when the maximum current limit is exceeded.

If the material is the same, the life span of the protected battery and the unprotected 18650 battery is about the same. most commonly use lithium ternary and lithium iron phosphate material. When it comes to the difference between protected and unprotected 18650 batteries.

The 18650 protected battery will be longer than the 18650 battery without the protective plate, and some devices cannot use the 18650 protected battery due to the initial design. Not only the size is different, the price is also different, without protection plate than 18650 protected battery cheaper, but suitable for people with lithium battery experience.

Flat 18650 without protection plate, 18650 and with protection plate positive terminal is pointed, the price is also slightly more expensive, but the safety is higher, more versatile, 18650 lithium battery with protection plate can prevent the battery from over discharge, over discharge will cause lithium battery fever, or even burning, explosion and other dangers.

How to distinguish lithium 18650 protected battery

Many people are curious about the question, how do I know if my 18650 battery is protected? We can visually distinguish an 18650 protected battery from the following 5 ways.

How to distinguish 18650 protected battery

  1. 18650 protected battery’s positive terminal has a pointed tip, unprotected 18650 batteries are flat.
  2. The height of 18650 without protection plate is 65mm, 18650 protected battery is generally 69-71mm.
  3. If the battery does not discharge when it reaches 2.4V, it means there is a protective plate.
  4. Touch the positive and negative terminals. If there is no reflection, it means that there is a protective plate. If the battery is hot, it means that there is no protective plate. Non-professionals cannot do this experiment, improper operation will cause irreparable personal harm.
  5. When the lithium ion battery manufacturer has the words “overcharge/overdischarge protection” on the battery, it means that the battery has been protected.

How to choose best lithium 18650 protected battery supplier

There are many 18650 lithium battery manufacturers in the world, such as Panasonic, Samsung, Sony, etc. If you want to know more 18650 manufacturers information , here are the top 10 18650 battery manufacturers in the world, the quality of the 18650 batteries of these manufacturers is guaranteed.

When buying 18650 batteries, you must first check whether you need a lithium 18650 protected battery with a protective plate or a battery without a protective plate. When choosing a 18650 battery supplier, you can mainly refer to the company background, scale, experience in the lithium battery industry, or user reviews to see if the supplier is trustworthy.

And TYCORUN ENERGY odm lithium ion battery pack manufacturer have more than ten years of experience and also provide related 18650 batteries. If you are interested, you can check the related products below.

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