Not sure if it is a rapid charger - I have a MAHA charger that works great - I'll probably use that for most of the charging and keep an extra set in this charger.
I bought these to fill my 360 wireless controllers. Much less expensive than the battery packs and have 16 left over!
The company gets good reviews on reselleratings.com (over 9 out of 10)
Shipping was $9.25 for me.
Use code holiday06 for FREE shipping.
LINK...