The Omncharge can support up to 18W output is compatible with all standard USB-A devices. If your device is QC 3.0 compatible, you can quick charge from the Omnicharges USB-A ports.
The USB-C port on the Omni 13+ uses USB-PD. To figure out if your device is compatible, you will need to check whether the USB PD profiles on your device match up with the USB PD profiles on the Omnicharge. The Omni 13+ supports the following USB PD profiles: 5V, 9V, 12V, 15V, 20V up to 3A
To check your device's USB PD profile just check the power specifications on the back of your device's charger.
The Omni 13+ can support up to 65W AC output. Make sure to check that the maximum power draw of your device is within this limit. You can check the power specifications of your device by looking at the back of your device's charger. You can read more here about how you find the wattage of your device.