15 minutes - 1 hour
I have an old 4G iPod that has made the transition between 3 cars. It's in good shape, but was not keeping a charge. Every time I started the car, it rebooted, and the stereo saw it as a new connection, switching to it every time
As always, the kit and guide was perfect, I had the replacement battery in within 20 minutes of opening the box. The tools worked perfectly and let me pop it open and make the swap
iFixIt is always my first stop when trying to fix or upgrade. This is also where I tell people to check for guides. Spread the word, and buy from them, they rock!