As a 'general' middle-of-the-road AC wall outlet (12VDC 4-5A) charger should suffice for most parkflyers. Always better to get more amperage than you need. Even though you may never be charging anything with more than 3300mAh capacity you need the extrp cushion so it doesn't overheat during 60 minutes of charging.
http://www.google.com/search?sclient...Bw&safe=active