Convoy 3X21D 2.0 Charging

This is a dumb question but I was wondering what wall plug I need to charge the Convoy 3X21D. I’m fairly new to higher end flashlights and just ordered one. It says this on the website - Please use TYPE-A to TYPE-C cable and 5V adapter to charge the battery. I bought this battery with it if it matters. 3PCS Molicel P50B 5000mAh. Thanks for the help! ​