1. It is recommended to use the original charger or brand certified charger. 2. The original charger or brand certified charger can ensure the stability of voltage and current, will not cause damage to the computer, and can also ensure the charging speed and efficiency. 3. If you need to buy a charger, you can choose a brand certified charger, such as Apple's MagSafe charger, Dell's AC adapter, etc., you can also choose some third-party brands of chargers, such as Anker, RAVPower, etc., but be sure to choose a charger that suits your computer model. To avoid incompatibility or damage.