Yes.
Yes, DS games do work in a DSi XL. The DSi XL is part of the DS line, so DS games are meant to work with it.
Yes, the DSi charger is the same as the DSi XL.
No, the DSi XL has its own charger.
All of the games that work for any DS will work for DSI XL.
yes
yes
yes
No. You need a different cartridge for the dsi/dsi xl, such as the acekard 2i.
Yes , any game made for the DS will be compatible with the DSi and DSi XL consoles
No but for 3ds
If you mean Nintendo DSI XL, then just insert it in your DSI XL YOU DUMMO!
I am pretty sure yes.