(A 100W data cable is required to achieve this power,And your device also needs to support 100W fast charging to achieve this effect.All mobile power banks on the market share the same principle, whether claiming 120W or 65W, they require a data cable of the same power and support from your device to achieve the claimed power example, after purchasing this power bank, if your data cable supports fast charging up to 100W, but your device is an 16 Promax that only supports about 30W fast charging, then the power bank will only provide the fastest 30W fast charging . Alternatively, if the your device is a Mate 30pro that supports up to 65W fast charging, and the your data cable is 22.5W fast charging, then the power bank will only release 22.5W fast charging power, or if your data cable is 100W and your charging device is a Lenovo laptop (supporting 100W fast charging), then the power bank can achieve a maximum power of 100W (fluctuating between 65100 fast charging power, which is a normal phenomenon to protect the battery))