The discharge characteristics of lithium batteries are related to the discharge current. The safe cut-off voltage for discharge is generally around 2.5V. The actual total output energy of a small current discharge is higher than that of a large current discharge. The reason is very simple. If the internal resistance of the battery is constant, the higher the current, the greater the energy loss in the battery itself. This is why high voltage lines are used for transmission lines. The truth. To carry the same energy, the lower the current, the lower the loss. Anyone who studied physics in high school knows this. In addition, high current discharge will cause the battery to generate more heat, which will further increase the internal resistance, which is a vicious cycle.
Then it is not difficult to understand why a small current discharge will increase the capacitybattery tee. Battery manufacturers generally use the capacity obtained by a discharge current of 0.2 C to nominally label battery cells. For example, if the standard battery capacity is 4400 mAh, then this is the capacity obtained with a current of 880 mA.
Regarding excessive discharge, the principle of lithium batteries does not pose a big problem. The only possibility is that the dielectric film on the surface of the negative electrode changes significantly. Excessive discharge will indeed seriously damage the battery, and the reason may be related to the actual structure of the lithium battery and the materials used in each part.
This means that the battery power is completely exhausted or disappears.
You can buy cell phone battery chargers with a discharge button. Follow the instructions to completely discharge the batteryterie. Another easy method is to leave the phone on or make calls to let it automatically turn off because of this. runs out of power, then tries to turn it back on and continues to use it until it can't be turned back on again. However, this discharge is not complete and cannot be considered a true discharge.
The number of times a lithium battery is used is calculated as one complete cycle. Five 20% charges and one full charge from zero are counted as one cycle. Battery protection mainly involves not using unstable voltage circuits or poor quality converters. Typically, phones are outdated due to obsolescence or other hardware issues, not due to the battery.
Detailed information
Lithium battery maintenance
1. Do not wait until the battery is discharged, then turn it off. the battery before charging it, as this may damage the battery.
2. It is best to use the original charger and charging cable.
3. Try not to charge while playing, as this may cause the phone to heat up, and the heat from the phone will further damage the battery, and there will also be a risk of leakage.
4. It is best to fully recharge the battery once a month.