All, I'm looking for a tablet on the cheaper side that will have a long battery life, or will let me have the ability to buy a cheap extra battery. I coach in jr high and plan on using a tablet to keep stats during a tournament (building the app now). The problem is that some tournaments can last 12+ hours (most around around 8-10 hours). I'm not planning on surfing the net, this will only be used to run 1 app, but it will be on all day. If someone can point me somewhere with battery lives I'd really appreciate it. Please let me know what you guys suggest. Thanks in advance.