2012-06-30 Sat/Sun - Dunwich Dynamo DD20

By all accounts it packs quite a punch. We'll see. I've got a headlamp which I'll use for a couple of hours until it gets really dark, then break this bad boy out and hope it lasts until dawn. Anyone know where I can pick up a cheap set of second batteries for it?

Online, Maplins want 6.99 a battery. I can see a downside to this light now.