I have a few festivals coming up (Hard Rock Calling & Hop Farm) and tend to get few a fair bit of battery!
I bought a cheap one off ebay as a spare, which is great purely as a spare for single concerts. it's advertised as 1300mAh but performs much worse than my official 1000mAh batter.
I'm not sur ewhich rout to go, another cheap one for around £5 (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170486237117&ssPageName=STRK:MEWAX:IT0)
A refurbished official one for £10 (https://secure.fujifilm.co.uk/shop/consumer/digital/clearance-corner/product-128743)
or an expensive one from the likes of Play.com or somthing.
Any advice/recommendations would be great!