The correct method for charging lithium batteries is: charging, activation, constant current variable voltage charging, variable current constant voltage charging, etc.
1. Charging
The safe operating voltage range of lithium batteries is 2.8 to 4.2 V. Below or above this voltage range, the lithium ions in the battery become very unstable. . and even cause accidents. To ensure the battery is within a safe range, a specialist charger is required. These chargers automatically adjust the charge based on the current battery condition.
2. Activation
Before the lithium charger starts charging, it will supply a small current to the battery, at the same time detect changes in battery voltage and gradually increase the current. up to the set value. This process can be considered as an activation chargeor test.
3. Constant current and voltage charging
The charger charges the battery with constant current. As the battery voltage increases, the charger also increases the charging voltage to speed up charging. .
4. Variable current and constant voltage charging
When the battery reaches the cut-off voltage of 4.2V, only about 70% of the battery is charged (not full). At this time, the charger continues to charge the battery with constant voltage and gradually decreasing current. It does not stop charging until it detects that the battery voltage continues to increase after charging less than 0.1A.
Precautions to take for charging lithium batteries are:
1. Do not charge at high temperatures
When the ambient temperature is above 35 degrees, charging the device will cause further damage to the battery. Even storageof the battery in a high temperature environment will cause a certain degree of damage to the quality of the battery. Therefore, not charging lithium batteries in a high temperature environment will help extend battery life.
2. Cannot be charged at low temperatures
Using lithium batteries in very low temperature environments (4 degrees Celsius) will reduce battery life. Some lithium batteries cannot be charged at low temperatures. temperature environments. This is a predefined protection function. The lifespan of lithium batteries is generally 300 to 500 charge cycles. During this cycle, respect the charging principle of “surface discharge and surface charge”. Do not charge at high or low temperatures. If you master the correct charging method, lithium. The battery will last longer.
The correct way to charge cell phone lithium batteries
Lithium batteries have no memory effect and can be charged at any time. Reduce the number of charges, the battery is deliberately exhausted. Recharging the battery will not extend battery life, but will have a negative impact on battery life.
In fact, when charging lithium batteries, it is important to “eat less and eat more”. Frequent superficial charging and discharging will help extend their lifespan.
You can charge your phone at any time. You don't need to wait for the low battery alarm or for the phone to be completely discharged. Additionally, when charging the mobile phone, it should be kept in a sleep state with black screen and try not to watch videos or play games. When you need to use the mobi phoneTo speak, it is best to unplug the charger. plug, otherwise it will also affect battery life.
Notes:
First of all, keeping lithium-ion batteries properly charged and discharged can extend battery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect the battery. This means that when charging batteries of digital products such as mobile phones and laptops, it is not necessary to reach the maximum value.
If digital products equipped with lithium-ion batteries are exposed to sunlight or stored in hot cars, it is best to keep these products turned off because if the operating temperature exceeds 60 degrees Celsius, the lithium battery -ion will accelerate aging. Lithium battery charging temperature range: 0 ~ 45 degrees Celsius, battery discharge temperature rangelithium battery 0 ~ 60 degrees Celsius.
Second, if the cell phone battery needs to be charged every day, the reason may be that the battery is defective or it is time to "retire".
For laptop owners, it is best to remove the battery if it is plugged in for a long time (the high heat generated by the computer while in use is not good for the battery of the laptop).
Third, under normal circumstances, 50% power is most conducive to the preservation of lithium-ion batteries.
If you are using a vivo mobile phone, it uses a lithium polymer battery, which can be used once fully charged.
You can refer to the following methods to maintain the battery:
1. Do not wait until the battery is exhausted before charging it. Excessive discharge will have some impact on the battery. . In severe cases, this may cause equipment failure. If it cannot be turned on normally, try to charge it in time when the battery is too low;
2. data cable for charging. Non-original chargers may have various problems and damage the battery, thereby reducing battery life;
3. When loading, try not to play while loading. , it is easy to increase the heat, easily consume the battery and shorten the battery life;
4. Charging When finished, please disconnect the power supply in time to avoid charging for a long time;
5. Avoid using the device in a high temperature environment.
Warm reminder: Batteries are consumables. As the number of charges increases, the actual battery capacity decreases.