Yes, you can use a power bank to charge multiple devices at the same time, provided it has multiple output ports and sufficient capacity. When selecting a power bank for this purpose, look for models with two or more USB ports, which allow simultaneous charging of your devices. Keep in mind that the overall charging speed may be affected when multiple devices are connected, as the total output current is divided among them. To ensure efficient and safe charging, always check that the output voltage and current ratings match those of your devices before connecting them to the power bank.