18650 lithium battery parameter and repair method

2022/04/02

  Author :Iflowpower – Portable Power Station Supplier

The 18650 lithium-ion battery is a common lithium ion battery model. The 18650 lithium-ion battery is very suitable for fast batch automation production. And safety is reliable, widely used in various industries and areas.

18650 lithium ion battery parameter one; numerical description 18 is 18 mm, 65 is a height of 65 mm, 0 is expressed as a cylindrical battery. Single Nominal Voltage: 3.6V or 3.

7V. Charging voltage: 4.2V (lithium cobalt acid is 4.

2V-4.3V) minimum discharge termination voltage: 2.75V, lower than this voltage is easy to cause serious decline in battery capacity and even scrapped.

The most charged termination voltage: 4.20V diameter: 180.2mm.

Height: 652.0mm. Capacity: 1000mAh or more, conventional capacity is 2200mAh-3200mAh.

The 18650 lithium-ion battery has the advantage 1, the capacity is large. The 18650 capacity of the lithium-ion battery is generally between 1200mAh ~ 3600mAh, and the general battery capacity is only about 800mAh, if combined into a 18650 lithium-ion battery pack, the 18650 lithium ion battery group can break through 5000mAh. 2, long life.

3, high security performance. 18650 lithium-ion battery is high, not exploded, not burning; non-toxic, no pollution, through RoHS trademark certification %. In order to prevent battery short circuit, the positive and negative of 18650 lithium-ion batteries is separated.

So it may have dropped the ultimate path. The protective plate can be installed to prevent the battery from being filled, which can also extend the battery life. 4, high voltage.

The voltage of the 18650 lithium-ion battery is generally 3.6V, 3.8V and 4.

2V, which is much higher than the 1.2V voltage of nickel-cadmium and nickel hydrogen batteries. 5, there is no memory effect.

Do not need to be emptied with the remaining electricity before charging. 6, the internal resistance is small. How to repair 18650 lithium ion batteries, repair method of 18650 lithium ion battery 1) About the voltage of 18650 lithium-ion batteries between 0.

1 to 2V, this lithium-ion battery belongs to a lithium-ion battery, in general, Lithium-ion batteries have a large probability that there is a large probability of a voltage of 0.1V. This situation is also a relatively common.

When the lithium ion battery cannot be used, we first measure the voltage of the battery, which is better to determine if the battery is good. The bad basis, if any voltage is no longer measured, then there is no need to repair. Because there is a short circuit inside the battery, it is impossible to fix it.

Repairing the low power 18650, if the battery voltage is about 2V, the 18650 lithium ion battery (about 3.6V) can be directly used directly, and it is connected in parallel with the positive electrode, negative electrode to the positive electrode, negative electrode), forced Make a part of the battery that is charged with a low voltage and then charges the 18650 lithium-ion battery charger. However, there is also a part of the charger's own function, which can be charged with low voltage battery, which is suitable for situations where existing chargers cannot be charged normally.

With regard to lower 1V, especially only 0.xV, most chargers will refuse to report their mistakes, or they cannot be charged directly. Then this battery uses a nickel-hydrogen battery charger, charging it to 1V to 1V to try the parallel.

Here, you should pay attention to the 18650 lithium ion battery in 0.XV state not directly to normal. The lithium ion battery is parallel to charge, which may directly blow the inside of the battery, resulting in permanent damage of the lithium ion battery.

And this is a big probability. 2) Restore the capacity of the 18650 lithium-ion battery; the capacity recovery of the lithium ion battery can only be small, the lithium ion battery does not have a sluggish dullness due to memory problems, so that the repair effect of capacity failure caused after normal use Most of the time, but you can try it, sometimes the effect will surprise, -10 ¡ã C refrigerated method; use the 18650 lithium-ion battery (about 3.3V) to put it in a refrigerator and then put it after a few days later Take it out, it is more expensive to 4.

2V after returning to the battery, and repeats the recovery of capacity several times. 3) When the lithium ion battery is stored, the voltage of the battery can be used to 3.6V and then put it into the refrigerator in the refrigerator.

In the low temperature environment, the natural attenuation of the lithium-ion battery will become very slow, then the same Lithium-ion battery accelerated aging in high temperature environments. 18650 lithium-ion battery price is proportional, the greater the capacity, the greater the energy ratio, the more raw materials, so the price will be more expensive, the general price is 10 ~ 30 yuan / support. It should be noted that when purchasing a 18650 lithium-ion battery, in addition to capacity, discharge performance is also critical, to use 18650 lithium ion batteries according to discharge performance to different devices, on some high-power equipment, discharge performance is better The use of 18650 lithium-ion batteries will be better.

On some low-power devices, the capacity-type 18650 lithium ion battery can supply a more lasting standby time. The above is the 18650 lithium-ion battery parameter summary, 18650 is only a size model commonly used in batteries. In fact, other categories of battery products have 18650 battery models.

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