This MagSafe 1 to USB-C cable is only suitable for the 26,800 mAh power bank with USB-C PD output. The cable provides a maximum output of 65W and can, in combination with the power bank, charge a MacBook with a MagSafe 1 connection up to 65W (check the MacBook manual for specifications). The length of the MagSafe 1 to USB PD cable is 1.8 meters.