I own a 1st-generation 10 GB iPod. I don't use it all that much, mainly for about one hour twice a week for language lessons while I pedal a stationary bike at the gym. But, the battery has not been holding much more than two hours' charge, and today the battery had pooped out after only an hour's use last Thursday (today is Tuesday). So, I decided that it was time to install the replacement battery that I had purchased from OWC. It was pretty straightforward and relatively simple. The hardest part was prying open the first corner with the tool that is supplied in the kit (a nylon or plastic flat-bladed screwdriver shaft). Once I got it open, sliding toe tool around the side and bottom to open the iPod was easy, and removing the shiny metal back cover took a little careful tugging to avoid breaking anything. Replacing the battery was as easy as unplugging the original and re-plugging the replacement. The directions indicate that the battery is fixed to the hard drive with some sticky sponge tape strips. Mine was not that way, so I used some double-sided tape that I happened to have to fix the battery to the drive (I think that the main objective is to keep it from jiggling around inside when the iPod is shaken). Then, I replaced the back, taking care not to pinch the battery wires, and first slipping the case over the FW and headphone connectors, and the safety switch. All-in-all, maybe a 10-minute job, and would have been 5-minutes if not for having had to figure out how to make the first separation of the case with the special "tool." No small parts to get lost in the mechanism, just a tiny battery connector to unplug and re-plug and an ornery case to get started opening. I purchased the battery for $30, but got the package deal that also included the leather protective case with belt clip for $35. With postage and handling, the bottom line was $40. Beats Apple's replacement charge of $99 or other vendors' charges of $59 or $79. It's now about three hours later, and the new battery is all charged up and ready to rock and roll. --Steve