How to prevent cell phone battery life from losing too quickly

Avoid battery loss:

1. Charging your cell phone overnight will affect battery life

1. Most cell phone batteries on the market now use lithium batteries. will have a battery overcharge protection mechanism. When the battery is fully charged, the battery will automatically stop charging, but it is generally recommended not to charge it overnight.

2. What you need to watch out for with lithium batteries is not overcharging, but overdischarging. That is, try not to keep the phone in a low power situation and keep the power between 40%. and 80% that's all.

2. Recharge your cell phone when it is discharged

1. I often hear others say that smartphones should wait until the prompt says low battery before charging, otherwisethe battery storage capacity will be reduced. It will get worse and worse. But in fact, the lithium-ion battery installed in the mobile phone has no memory effect. If the cell phone is completely discharged and then recharged, it will damage the chemical activity inside the lithium-ion battery.

2. For example, once the iPhone is turned off due to lack of power, it will not turn on immediately after charging. Rather, it must be charged for a certain amount of time before it can be turned on. alight. This concerns the chemical activity inside the cell phone battery. Therefore, users do not need to wait until the phone is powered off to charge it, they can simply charge it as they go.

3. The more frequently you charge, the shorter the battery life will be.

1. Many people think that the lithium electrons in lithium batteries losent their vitality as the number of times. Charges increase, causing battery life to expire, so many people like to reduce the number of charging times as much as possible to ensure that cell phone battery life is extended .

2. In fact, the lifespan of a lithium battery depends on the charge cycle rather than the number of charges. This cycle refers to the process of recharging after energy exhaustion. into the charger, then unplugging it once. Generally, the battery storage capacity will be reduced to 80% of its original value after 500 cycles. Under normal conditions of use by ordinary users, this situation usually occurs after one and a half to two years.

4. Playing with the phone while charging will damage the phone.

This is probably the most common rumor about charging phonescell phones, and it's also the rumor that people believe the most. . In fact, there have been many news reports about why cell phones get charged when answering calls, resulting in an electric shock or explosion. However, the final investigation showed that these problems were actually caused by counterfeit charging sockets.

Common sense regarding cell phone battery maintenance:

1. The battery charging time does not need to be too long. It can be removed when full.

2. It is best to only use the charger originally provided by the manufacturer when purchasing the phone.

3. Battery contacts should not come into contact with metal or oily accessories, and be careful to avoid moisture.

4. Do not immerse the battery in water or throw it into a fire.

5. Do not placethe battery next to low or high temperature objects, such as refrigerators and stoves.

6. Please use special facilities when handling batteries.

7. If you need to replace the battery, please only use the same type of battery.

8. Battery life is calculated based on the charge and discharge cycle.

Reference: Baidu Encyclopedia - Mobile phone battery

Strictly speaking, charging the voltage of a lithium-ion battery above the limit b (4 .20 V) constitutes an overload. But there are also degrees of overload. Most people think that if it is less than 4.24V, it is not considered overcharging, or it is called an "acceptable" micro-overcharge.

Battery specifications at from a lithium-ion battery cell. Manufacturers Charging limit voltage is usually marked as 4.20V +/-0.04 V.

The area between limit A and limit b (above 4.24 V, below 4.35 V) can be called moderate overload.< /p>

The capacity Discharge rate of lithium-ion batteries in this voltage range will be higher than that of normal lithium-ion batteries.

After carrying out the charging safety experiments, remove all protections from the battery. circuit, then charge the lithium-ion battery cell to a voltage of 5.0 V.

The result is that after 3 to 4 hours, the battery will become seriously swollen.

Under an electron microscope, the negative electrode of a lithium battery has a layered structure and the positive electrode is an accumulation of angular crystals. The shape varies depending on the anode material.

The main consequence of excessive discharge is to cause the negative plate to collapse into layers. When recharging, the numberre and the convenience of lithium ions embedded in the negative plate are limited.

Decreased capacity, increased internal resistance, and shortened service life cannot be restored.

Overload is even scarier!

The battery is fully charged. The negative electrode changes from the lithium ion intercalation reaction to the deposition of lithium metal on the surface of the negative electrode, and the solvent is oxidized (the heat released by the oxidation of the solvent caused by overcharging is much more higher than the heat released by the reaction between lithium ions and the solvent in the reversible state): as the temperature of the battery increases, reactions between the metallic lithium and the solvent, and the carbon embedded in the lithium and the solvent occur one after another, causing the battery to catch fire. or explode. When analyzing the electrolyte, binder and metallic lithiumcan also react.

After overcharging, needle-shaped metallic lithium crystals are found all over the pole piece, and micro-short circuits will occur if the diaphragm is pierced. At worst, it will make the self-discharge worse; at worst, the dendrite short-circuit current will cause the battery temperature to rise sharply and the electrolyte to vaporize. In this case, if the temperature is too high, the material will burn and explode. Or the shell is broken first, allowing air to enter and violently oxidize the lithium metal, both of which result in combustion and explosion.