Charging question

This is what the manual says regarding charging the unit: "Plug the USB cable into a USB port on your computer." As I'm using the computer less and less these days, I'd like to know if I can safely plug the unit into my phone charger (5VDC 1500mA). I believe the USB standard is 5VDC 500 mA. I really like my Edge 25 and would rather not fry it.