Hey all. I currently have an old laptop mid-2009 macbook pro that I might want to use. I have a desktop, but having a laptop would be nice to use for working in coffee shops etc. But the battery on my computer is null. I unplug the device and literally five minutes later it asks me to plug it back in. I'm thinking of buying a new battery. Though, I'm wondering if its worth it since its a 2009 device. I've kept it in good shape but could it drop on me at any second? What do you guys think? thanks!