Considering a new battery.

I have an AOD250 and its 2000mah battery doesn't last long. I didn't want a bulky 9 cell, so the 6 cell is what I'm looking at. Is this an acceptable battery? I've heard people were pleased with it.

http://cgi.ebay.com/6-CELL-Battery-...ItemQQptZLaptop_Batteries?hash=item3ef88abe43

I also have this case, which I think will be ok with the 6 cell, but not the 9 cell.

http://www.amazon.com/HP-NF869AA-Mini-Notebook-Sleeve/dp/B001R5FRMI/ref=cm_cr_pr_product_top

 

I'm not sure if this battery is compatible with the D250. Can anyone confirm that it is?

 

all my machines have these 6 cell batteries and they work pretty well overall.

 

I want to order a new battery before the weekend, but I can't decide between a 6-cell and a 9-cell. Both are cheap and the 9-cell would last the longest, but I would also have to buy a bigger case (I think). Which is the better deal?

6-Cell: http://cgi.ebay.com/6-CELL-Battery-...ItemQQptZLaptop_Batteries?hash=item3ef88abe43

9-Cell: http://cgi.ebay.com/9-Cell-Battery-...ItemQQptZLaptop_Batteries?hash=item3ca2a2cd1b

Thanks.