Introduction to the problem of bulging 18650 lithium batteries.

3. Other lithium iron phosphate polymer battery packs may experience bulging even without prolonged use, as air is conductive to a certain extent. Therefore, prolonged discharge is equivalent to direct contact between the positive and negative terminals of the battery, resulting in a slow short circuit. 

4. The reason for the low quality of polymer lithium battery chargers. The charger uses inferior boards, refurbished or low-quality components, generates heat, and causes parameter drift, which leads to uncontrolled charging pressure limiting, resulting in deformation, swelling, cracking, and even explosion of the battery shell caused by gas kneading inside the polymer lithium battery. 

5. Charging time is too long. Assuming moderate charging will cause a lot of gas to flush the plate, causing the active substances inside the polymer lithium battery pack to fall off, shortening the battery life, accelerating the rate of battery dehydration, affecting the differentiation of electrolyte, raising the battery temperature, and causing it to inflate!

How to modify the bulging polymer lithium battery pack? If the phone battery is now fully charged and bulging, there are also ways to deal with it Just use your fingers to find the empty space of the battery first, poke a small hole with your fingers, and let the air inside escape. 

2. Buy a new polymer lithium battery pack for the rest and replace it with a new battery from scratch. Can the mobile phone polymer lithium battery bulge still be used? Polymer lithium batteries that have been bulging are not suitable for reuse. During the bulging process, the capacity of the polymer lithium battery has decreased, and the standby time has significantly shortened. Strict conditions can result in extremely short standby times, to the point where phone calls cannot be made and the hair may start moving as soon as a call is made. At this point, some individuals may need to replace the battery, so for safety reasons, it's better to buy a new battery. When the polymer lithium battery pack has a bulging problem, do not continue to use this problematic battery. Due to the swelling of the battery cell, when it reaches a certain limit, it may cause explosion, which is very dangerous. For the sake of personal safety, it is advisable to replace the polymer lithium battery pack as soon as it shows signs of bulging. The poor quality and long charging time of polymer lithium batteries result in. The battery charging drum cannot be used continuously, please replace it with a new battery as soon as possible.