If you are lucky, your battery may swell up like mind did, short of blowing up it opened the case for me. That being done really made it easy and encouraged me to do the repair myself. I still needed the proper screw driver (T6 Torx Screwdriver) to remove the two black torx screws that are found at step 10 of this repair guide. I purchased the iFixit 64bit driver kit, simply because I intend to work on several other iPods and phones, the kit is of good quality, well worth the purchase. If you have some mechanical ability, and follow the instructions, I was done in about 20 minutes, placed it back on my Bose player. I couldn't wait for it to charge, just wanted it to start playing, and after a minute or so my iPod 4th gen 20 gb was playing the music which I hadn't heard in about 3 to 4 years, as a result of a enlarged battery. As I write these comments down, I'm listening to my sweet tunes with a big smile on my mug, the sign of a satisfied customer. Thanks to iFIXIT.!!!