Can you change the battery in an iphone 3g yourself?

I have a 3g and the battery power isn't lasting, but I don't want to take it to an apple shop. Is it easy to change myself?

You would have to take it apart yourself to do so. Better leave it to the pros.

It can be done DIY, but you need a couple of special tools. You used to be able to buy a kit from Maplin with all the bits you needed but it isn't in the catalog now. Probably the kits are available on line, but remember if you break it you're on your own