My Powerbook is slowly dieing. The battery life has dropped from a once-impressive 5 hours to around 20 minutes. I am in two minds as to whether I should buy a new battery for it - Apple want to charge me £87 which seems extortionate given that the machine is probably worth only twice that amount. My question: Can I buy a replacement laptop battery from another place that will be as good as the Apple-branded one? I have found them on eBay for as little as £30, but are these a false economy? Secondly does anyone have an recommendations for manufacturers / retailers that are well-known for making decent aftermarket batteries? For what it's worth my Laptop is a 12" Powerbook G4/1.5GHz PPC/768mb.