Hi
Correct , it does not come with a charger, but only needs a micro UBS charger which most things do these days, i use my Samsung tablet lead.
IMO extra barreries are a must to extent the fun, they are relatively cheap on amazon and ebay ( £15-20 each ) and i also bought the 3 battery charging hub, again relatively cheap,( £15 max ) that also doesnt come with a charger but also uses the micro usb.It charges all 3 batteries in about an hour and a half, well worth it.
Enjoy