Just got home from Morrisons and they are doing a 'Family Pack' of 24 'AA' Energizer batteries for just £4.89. The 4 packs were still there for the usual price of just under £3 so this is a MASSIVE saving. Works out just over 20p per battery (81.5p for 4) so based on the usual 4 pack price (if you were to buy them like that) you're saving about £12!!!
Loads of them on the shelf, use by date 2015.