Batteries for RE

Hello all...

I'd love to have some feedback on Batteries for Renewable Energy. I am well
acquainted with flooded lead acid batteries - Trojan's, Surrette's etc and
have recentley been hearing about NiCad's, Saft Batteries -
http://www.saftbatteries.com/120-Techno/10-10_produit.asp?paramtechno=Nickel
+systems&Intitule_Produit=Sunica
and SBS - http://www.sbsbattery.com/utilityTelecom/specialty.html and Edison
ED-160 Nickel-Cadmium Cell's.

Does anybody have any experience with using NiCads or other than Lead Acid
as storage for RE?

Thanks
Rush