How to activate a lithium-ion battery from its dormant state? Lithium-ion battery activation methods. After being left unused for a period of time, lithium-ion batteries enter a dormant state, at which point their capacity is lower than normal, and their usage time is shortened. However, lithium-ion batteries are easily activated; they can be activated after just 3-5 normal charge-discharge cycles. Due to the inherent characteristics of lithium-ion batteries, they have virtually no memory effect. Therefore, no special methods or equipment are needed to activate a new lithium-ion battery in a user's mobile phone.
How to activate a lithium-ion battery from dormancy?
1. Use the original charging cable to connect to a power source for charging. Do not use the phone while charging.
2. Activate the battery by charging it for 30 minutes with a low-voltage charger. You can also charge it using a computer's USB port or a power bank.
3. You can try fast charging for one to two hours and use a professional tester to see if the voltage increases. If it does, you can choose to continue charging with the original charger, which can activate the lithium-ion battery.
4. Regardless of the method used to activate a dormant lithium-ion battery, do not rush to turn it on. It is recommended to charge for half an hour before turning it on, and then put the phone into airplane mode.
Lithium-ion battery activation method
1. Lithium-ion batteries do not require any special activation methods; they will activate naturally during normal use. Insisting on using the widely circulated method of "activating with three 12-hour long charges for the first three times" will actually be ineffective.
2. You can activate a mobile phone's lithium-ion battery with an 18650 lithium-ion battery. The voltage of the 18650 lithium-ion battery should not be too high, ideally between 3.3 and 3.7V; otherwise, the charging current will be too high.
3. You can also activate the battery by tapping the positive and negative terminals of a power bank against the positive and negative terminals a few times. Just don't let it stay on for too long. Once activated, it will have voltage and can be charged normally.
4. Discharge or resistor discharge methods can be used. When using discharge, it should be done to the point where it stops immediately upon power-on. For resistor discharge, a small light bulb connected to the appropriate voltage can be used to discharge for an extended period of time until the light bulb immediately turns off upon connection.
5. Try fast charging for one to two hours and use a professional tester to check if the voltage increases. If it does, you can choose to continue charging with the original charger to activate the battery.
For lithium-ion batteries that haven't been used for a long time, a multimeter won't detect any voltage outside the battery, and they won't be able to be charged with a mobile phone or universal charger. Many people might think the battery is broken, but it may not actually be damaged; it may have simply entered a dormant mode. Due to its own discharge, the voltage of a lithium-ion battery gradually decreases. When the voltage drops below the minimum threshold voltage set by the battery's protection board, it automatically cuts off the power output, and the lithium-ion battery enters dormant mode.
Lithium-ion batteries are widely used in all sectors of the national economy. However, due to factors such as memory effect and increased internal resistance caused by improper charging and discharging or maintenance during use and storage, the capacity and lifespan of lithium-ion batteries are often greatly reduced, sometimes even rendering them unusable. This, in turn, affects the performance of the equipment. Therefore, timely and necessary maintenance of lithium-ion batteries is essential. Activation is a crucial aspect of battery maintenance; it can improve the usability of lithium-ion battery packs and reduce damage to lithium-ion batteries.
