It depends on whether your disposable vape has a built-in or removable battery.
For internal battery devices, utilize a USB-C connector. If unavailable, procure a Micro USB to USB C adapter or buy a USB A/3 to USB C cable for charging.
For removable battery devices, invest in an external charger to charge the battery separately.
Note: Disposable vapes like the IGET Bar are not rechargeable.