Here is all the parts being sold by Streamlight for this flashlight: http://www.streamlight.com/static/document/info_sheet_with_part_numbers/strion-led_sup.pdf
C2CSAFETY sells a 230V International charger part 22664 here on Amazon. You can buy it all together.
It comes with a rechargeable battery in it and the charging station. I don't believe you can use non rechargeable batteries in it. Not sure why you would need to. The battery that comes with it has lasted me for a year and is showing no signs if needing replaced and I use this flashlight all day long every day.