Here's omething to add to any order from 7day shop bearing in mind their high postage cost (£3.95) so if you are thinking about buying more memory, perhaps nows the time to do it.
"These AAA size are super high capacity 900mAh and will offer you really excellent performance and battery life. Ni-Mh (nickel metal hydride) type batteries are favoured by demanding users as they are memory free and offer superb performance over traditional Ni-Cad rechargeable and also single-use Alkaline types. These 7dayshop.com batteries are compatible with all good quality chargers and equipment types too. "
There are a few other bargains on this site too.