CHIPOD
Y U NO HAVE GOOD BATTERY?
i'm assuming there's 2 holes for those wires, and you would need a soldering iron and a steady hand to reattach the battery. should be fairly easy as you are not dealing with delicate components (like the chip)
if you don't already know.. you are looking for 2 holes close together that look like they had ur battery wires in em. they should also be marked with symbols
+ -
you might need to look at the other side to find the symbols, and may actually have to solder from the other side as well
if you don't already have an iron, you can grab a cheap one from a hardware store. I recommend getting at least 25watt otherwise you will be waiting all day for it to heat up & the job won't be as good. You also want some self-flux solder (i usually get a small amount in a handy tube for a couple of bucks)
the trick is to use as little solder as u can. too much and heats up everything alot, and it might spread.
if theres too much, shake or blow it off and try again
i'm sure there's some good tutorials on youtube