Can you use the charger from your UK ds lite to recharge a ds lite bought in us

Yes you can. The important thing for your DS Lite is the output from the charger not the input. All DS Lites (US or UK or anywhere) all want the same input charge so if you are in the UK a UK charger is exactly what you want to charge any DS regardless of where it came from. The difference is the input to the charger and what it has to do to convert that to what the DS wants so if you are in the UK then a UK charger is perfecto.