Anyone have experience with Generic battery packs for SB900?

[Lani]

I have been looking at these (http://www.dealextreme.com/details.dx/sku.35477)....anyone have any experience with them as compared with the hugely expensive Nikon SD9?

[The_Scroop]

I can't speak for the sb900 but I have an sb800 and used a generic battery pack with no issues at all. Works just a branded one at a fraction of the cost.
Similar to camera batteries in a sense, the generic batteries often perform just as well as nikon branded ones.