NiMH batteries to rebuild old pack?

[Geebee]

Came across these NiMH packs and cells if people want to rebuild old NiMH packs or build extra safe packs for their bikes, the specs are pretty good for a bike pack 5ah, 10c constant and 15c burst.
They also have other voltages.
http://www.hobbyking.com/hobbyking/store/__56159__Turnigy_SC_7_2V_5000mAh_High_Power_Series_NiMH_Stick_Pack.html