charger power question

[kartrobison]

I need some help with selecting the right charger.

I wanted to purchase some Hyperion 2S 2500MAH batteries for my little mono hull.

but was wondeing if I bought this charger,
http://www.offshoreelectrics.com/proddetail.php?prod=emp-eos0606I-acdc

would it have enough power to take advantage of the Hyperion 5C charge rate seeing how the charger only goes up to 6Amp max charge current. (and is that safe?)

or do I need to purchase the bigger charger
http://www.offshoreelectrics.com/proddetail.php?prod=emp-eos720IAD

But if I wasnt using Hyperion batteries would the smaller charger work well because from what I have read most Lipos are usually charged at 1C or 2C


Thanks for the help