...is it me, or does the single cell Exposure Piggy Back look a lot like an 18650 cell in a nice case with a wire and plug on it? I am just about to buy one for 24 hour race and wondering whether to void my warranty* by diy-ing my own with £4's worth of battery (which I already have a few of) and £4's worth of odds and ends from ebay. And lots of gaffa tape of course. (*actually mrs j's joystick is well old and doesn't have a warranty anyway so perhaps I would try it on hers)
In short, am I missing anything or is it really just a cell, lead and plug?