From the day when laptop was born, debate about the battery has never stopped, because laptop running time is considered as an important laptop technologic index, which is mainly determined by battery capacity. Then how to make battery work at its optimal performance? Here are several mistaken ideas about battery maintenance (for commonly used lithium-ion dell laptop battery).
1. Shall we charge the battery for 12 hours at first use?
It’s not necessary to do so, because the laptop has complete power management circuitry and charging management system. When the battery is fully charged, the control circuit will automatically switch off. Once the battery is fully charged, it can be used at once. It is not that the longer the battery is charged, the more juice you can get.
2. To avoid memory effect, shall we fully drain the battery before charging it?
There is no need to fully charge the battery each time before re-charging it. It is proved that frequent and complete discharge of battery will shorten the battery life. It is recommended to charge the battery when the power is down to 10%. However, it’s not suggested to charge the battery when the power is above 30%, because the memory effect does exist.
3. Shall we take off the battery when laptop is powered by AC adapter, to avoid repeated charge and discharge?
The Answer is: No. You don’t actually have to take off the battery when laptop is powered by AC adapter. Also, you don’t need to worry about the battery being charged and discharged repeatedly. Most laptops are designed such a characteristic: When the battery power reaches to 90% or 95%, it starts charging (For example, most HP and Dell laptops).
4. Shall we fully charge the battery for long-term maintenance?
If you don’t need to use the battery for a long time, then you should pay close attention to the battery maintenance, because improper maintenance will affect the battery life. Usually, it is recommended to keep the battery in dry and low-temperature environment with 40% charge. If necessary, the battery should be charged and discharged at least once a month. The following chart will help us understand it more clearly.