Using Cam with 220 V outside USA

bought 2 cams form use into Australia, and wondering if I can simply use the USB charger with a 220 V plug; tried it and the cam seems to warm up a bit so I switched it off. Any ideas??

If you read the fine print that’s on the plug end of the supplied adapter, you will see it’s rated for 220v. So theoretically it should be fine. But you may be more comfortable using a made-for-220 USB power supply.