Seems like a brilliant price. Did a bit of Google for this battery and they all seem to be around £20, so this looks like a bargain price for a good brand battery. Don't forget your Quidco or TCB :).
Energizer digital camera batteries offer the long life and consistently reliable performance you need to get the most out of your digital camera, thanks to advanced engineering and state-of-the-art manufacturing.
# Quality - Energizer digital camera batteries meet or exceed original standards at a lower cost.
# Unsurpassed Warranty - A 3 year warranty on your Energizer battery.
CANON LP-E8 This Product is Compatible With:
Canon EOS 550D/ Rebel T2I Chemistry: Li-Ion
Runtime: 400 Warranty: 3 Year Free Replacement Weight: 0.50 lbs.