Function Explanation：
1. The memory effect of the battery is the phenomenon that the capacity of the rechargeable battery decreases, which occurs in some rechargeable batteries.
2. The term is increasingly used to describe similar situations, but in reality it only refers to a very specific phenomenon, as in the case of early nickel-cadmium batteries, where the phrase "be sure to drain and charge the battery fully during the first three uses" was heard.The performance that can be restored after battery failure.The memory effect is the tendency of a battery to automatically retain a particular operating cycle over a long period of time, and was first defined in nickel-cadmium batteries.
3. When the battery is only charged to 80%, it will be disconnected to charge, and the crystallization inside the battery will default to 0-80% for a complete charging number for a long time, which will reduce the capacity of the battery temporarily and shorten the service time.
Notes:
Now mobile phones and laptops are powered by lithium-ion polymer batteries, there is no problem with memory effect and they can be recharged on demand.