Lithium-ion batteries have no memory effect
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2020/12/18 14:15:27
1. lithium batteries have no memory effect, excessive discharge will only accelerate to kill it
It's safe to say that "cell phones need to be used up before charging" is the number one misconception.Why this misconception?
In fact, "the battery has a memory effect, if you don't use it, you will damage the battery." This is a feature of ni-MH rechargeable batteries. However, before lithium batteries were widely used, the mainstream rechargeable batteries really had to wait for the battery to run out of power, otherwise the battery would be less and less stored.
But now smartphones, tablets, laptops, digital cameras, mobile power supplies and other products are using lithium polymer batteries commonly known as "lithium-ion" batteries.The battery has a distinct characteristic from nickel metal hydride batteries: no memory effect and no excessive discharge.
The life of a lithium polymer battery is calculated based on the number of "charge cycles", that is, the number of "0-100%" charges.In short, if a lithium-ion battery has 1,000 cycles of life, the theory goes, "go from 100% to 0% and charge from 0% to 100%" a thousand times over, and the battery is pretty much dead.
In fact, the physical properties of lithium batteries cause damage to the battery itself when it overdischarges. If you often use 0% of the battery before charging, the battery will not care if you have not used so many cycles, and will die early!
Therefore, the first use limit of lithium battery is never to use the battery to completely run out of power to charge, the best is when you can charge the battery as full as possible, so that the battery can let you use for a long time .
If you're constantly out of the house and unable to recharge your batteries all day, and often drag them home with less than 10% of their battery left to recharge, it's advisable to buy a portable power source and carry it with you. Don't leave your battery in ultra-low power mode all the time.
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