The correct way to charge lithium batteries

Many people change a new battery for the phone. They have misunderstandings in the phone and computer charging, such as the following rumors.

Rumors: Newly bought mobile phones must be charged for more than 8 hours and repeated several full charge discharges. This process is called activation, which allows the phone's battery to reach its maximum capacity. The phone must be unplugged immediately after the phone is fully charged, as overcharging can cause the battery to explode. Laptop and mobile phone batteries are best recharged when powered off, which can reduce the number of charging and extend battery life.

The truth

1. Does the new battery need to be filled for 12 hours?

The first charge does not need to be filled for 12 hours. This is what the old-fashioned NiMH battery needs to do. The batteries used in today's smart phones and laptops are mostly lithium-ion batteries or polymer lithium batteries, the first time. Just need to charge in peacetime, the battery full indicator lights up.

2, reduce the number of charging can extend battery life?

Lithium batteries have no memory effect and can be recharged at any time. In order to reduce the number of times of charging, the battery is depleted and then fully charged. This does not extend the battery life, but has a negative impact on the battery life. In fact, lithium battery charging pays attention to "less meals", frequent shallow charge and discharge will help to extend its life.

3. When you charge, the battery will explode?

Lithium batteries generally have safety protection circuits and a variety of safety devices to ensure that the battery circuit is automatically cut off during excessive charge and discharge and short circuit. Therefore, unless there is a quality problem, the battery will not explode due to long-term charging.

However, from a safety point of view, do not cover anything on the battery when charging, and do not put it on the bed to avoid fire. In addition, try not to answer the phone when charging, because the mobile phone in the charging, the electromagnetic radiation will be relatively large.

4. Wait for the battery to run out and recharge it?

Try to use up the battery power of the mobile phone. It is best to use automatic shutdown. This method is only applicable to nickel batteries, in order to avoid memory effects. Most of the mobile phones on the market today use lithium batteries, and the number of times they can be charged is closely related to the depth of discharge of the battery. When the lithium battery is in a low battery, the loss is relatively large, so when the power consumption is recharged, it will accelerate its loss. Long-term battery life of 40%~60% can make the battery last longer.

5, overnight charging will damage the phone?

When the mobile phone is fully charged, the plug has not been unplugged. At this time, the mobile phone is directly powered by the power supply, which reduces the number of times the battery is charged, which is beneficial to prolong the battery life. However, if you always play the game with the power supply, it may cause the phone to overheat because of the high heat generated by the power supply. This will affect the battery, so if it is not too hot, charging the phone overnight will not damage the battery.

6, the phone does not need to shut down or restart

Should the phone be turned off like a computer? Apple recommends that users turn off their phones once a week to extend battery life.

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