Yes. However, it is recommended to directly use a power bank with replaceable battery cells, such as ENB mobile power box, to directly replace the battery cells without the need for capacity adaptation.
Why is it not recommended to replace battery cells yourself? Because 18650 lithium battery combination requires suitable capacity and professional equipment for welding.
Conditions for rechargeable battery combinations in ordinary mobile power solutions:
1. Battery voltages must be the same.
2. The maximum discharge current of the battery should be consistent.
3. Battery capacity should be consistent.
4. The battery type must be consistent.
5. The internal resistance of the battery should be consistent.
This makes it impossible for users to replaceeasily lithium batteries; Professional instruments are needed to match the capacity.
Why do lithium battery combinations (more than 2 cells) in regular solutions need to have equivalent capacity?
1. Different Voltages: A battery with high voltage will charge a battery with low voltage, resulting in damage to the battery.
2. Different capacities: After the low capacity battery is discharged, the high capacity battery continues to discharge, and the low capacity battery is in a reverse charge state. If things continue like this, the battery will be scrapped and the actual capacity of high capacity batteries will decrease significantly due to overcharging. Therefore, it is best to use batteries of the same or similar capacity in combination.
3. Different internal resistances: Different internal resistances will causedifferences in battery shunting during charging and discharging, which will also cause battery damage;
Is it necessary to replace the laptop battery?
1. Remove the outer heat shrink film.
2. Test the thirteen channels one by one. If it turns out that the voltage of one group is much lower than that of the other 12 groups, then there are obviously defective batteries in that group.
3. Cut the welding tape for each battery cell, then check one by one to see which ones have the problem. Find the place where the voltage is abnormal and replace the discarded battery cells with new ones. of the same capacity. After spot welding is completed, it can be used normally. If you assemble your own lithium battery and buy batteries, you need to buy a few extra cells so that you can replace it directly in case of a problem. .
Laptop battery life becomes shorter, laptop battery cannot be used, laptop battery suddenly loses power power (eg: battery power suddenly drops from 40% to 10%), laptop battery is not fully charged (eg: battery stops moving after being charged to 30% - 40%) Laptop suddenly turns off while there is still plenty of battery left. All of the above situations can be caused by a decrease. of battery capacity or damage to the battery. Of course, it is also possible that the material of the protection panel is damaged, but this possibility is very small. If it is a nickel-metal hydride battery or a nickel-cadmium battery, it can indeed be partially repaired by charging and discharging profonde (it cannot be completely repaired). But the laptops we use today are all equipped with lithium batteries. The failure of lithium battery is mainly due to the disintegration of the materials of the positive and negative electrodes of the battery cell. This kind of situation is irreversible and therefore cannot be repaired by the above methods. It can only be repaired by replacing the battery core and cracking it to unlock it. Laptop batteries can be divided into 3 parts: the case, the battery, and the protective case, which is the case of the laptop battery. According to different bonding methods, it can be divided into: snap-on type, ultrasonic bonding type and glue bonding type. A battery pack is a combination of batteries connected in parallel or series. According to the different combinations of parallel andseries, it can be divided into: 2 parallel series and 3 (the most common), 2 parallel series 4, 2 parallel series 2, 3 parallel series 3 and 3 parallel series 4 (rare). Note: 2 parallel and 3 series means first connect 2 batteries together in parallel, then connect 3 groups of batteries connected in parallel like this in series. There are a total of 6 cells divided into 2 parallel and 3 series, which we usually call a 6 cell lithium battery.