How to repair 18650 lithium battery, how to repair 18650 lithium battery

A lot of information can be found about the repair of the 18650 lithium battery, but there may be few that are actually effective. Most of the articles do not describe in detail the repair of 18650 lithium battery. In fact, it is not difficult to repair 18650 lithium battery, but it is impossible to restore to the original state, but it can restore a part of its capacity, or it will be unusable. It is not difficult for the 18650 lithium battery to return to a usable state. Before the 18650 lithium battery is repaired, we need to prepare a multimeter, a rechargeable single-cell 18650 lithium battery charger, and a nickel-metal hydride battery charger (non-smart charger, if it is a smart charger, the best with 0V activation function ), a 18650 lithium battery of normal physique. 18650 lithium battery cells are used more. Strong light flashlights, handheld mobile fans, power banks, some radios, etc., many small appliances in life use 18650 lithium batteries, and the content in this article is only suitable for the repair of 18650 lithium batteries used by this type of monomer. It is not suitable for groups of 18650 lithium battery packs. Repair method of 18650 lithium battery; 1) For the repair of 18650 lithium battery whose voltage is between 0.1-2V, this kind of lithium battery belongs to the over-discharged lithium battery. Generally speaking, the lithium battery only needs to have a voltage of 0.1V. High probability repair, this situation is also a relatively common one. When the lithium battery cannot be used, we first measure the voltage of the battery. This is a better basis for judging whether the battery is good or bad. If no voltage can be measured, Then there is no need to repair it. Because a short circuit has occurred inside the battery, it is impossible to repair. Note that if the battery voltage is about 2V, you can directly use a normal 18650 lithium battery (the voltage is about 3.6V), connect them in parallel (positive to positive, negative to negative), and force to The low-voltage battery is partially charged and then placed on the 18650 lithium battery charger for normal charging. However, some chargers have their own activation function, which can charge low-voltage batteries. This method is suitable for situations where existing chargers cannot be charged normally. For 18650 lithium batteries that are lower than 1V, especially 0.xV, most chargers will refuse to charge and report an error, or they will not be able to charge directly. Then this kind of battery needs to use a nickel-metal hydride battery charger, use a low current method to charge to more than 1V and then try the above-mentioned parallel connection, here you need to pay attention, the 18650 lithium battery in the 0.xV state should not be directly connected to the normal lithium Batteries are forced to be charged in parallel, which may directly fuse the inside of the battery and cause permanent damage to the lithium battery. And this is a high probability situation. 2) Restore the capacity of the 18650 lithium battery; the capacity of the lithium battery can only be restored in a small range. The lithium battery will not have capacity sluggish due to memory problems, so if the repair effect of the capacity failure caused by normal use is most of the time Minimal, but you can also try the operation. Sometimes the effect is surprising. -10℃ refrigeration method; put the used up 18650 lithium battery (voltage about 3.3V) in the refrigerator for a few days before taking it out. Wait for the battery After returning to normal temperature, fully charge it to 4.2V. Repeating several times will help to restore the capacity. 3) When the lithium battery needs to be stored, the voltage of the battery can be used to about 3.6V and then packed in a fresh-keeping bag and stored in the refrigerator. In a low temperature environment, the natural attenuation of the lithium battery will become very slow, so the same is true. In high temperature environments, lithium batteries will accelerate aging. Summary: 18650 lithium battery repair is actually very easy, as long as the standard operation can basically be successfully repaired, the safety and technical maturity of 18650 lithium battery are already very good. It is still necessary to repair the battery when there are some minor faults. Shenzhen Electronics Co., Ltd. is a professional 18650 lithium battery PACK manufacturer with strong technical strength. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Important structure of lithium ion battery explosion-proof test box