As John stated, the charger will have a label indicating if it is designed to work around the world on 100-240 VAC 50 or 60 hertz. Everything I have purchased from Canon has this capability but check the label on your charger.
NEVER use a typical "travel converter" with electronic products unless it is specifically labeled for that use. Most travel converters are designed to work with hair dryers and other products with heaters and/or a universal motor. Electronic items like your power supply expect a fairly pure sine wave input while the simple travel converters provide a very dirty spiky output that will damage electronic items.
Electronic items require a step down transformer instead of a simple converter circuit and those get very heavy at anything over a 25 to 50 watt rating so if your travel converter is rated for several hundred to over 1,000 watts and it is lighter than a Canon EF 800 f5.6, DON'T plug anything electronic in to it 😁
Label from Canon LC-E19 charger below showing typical labeling for modern multi-voltage device:
Rodger
