The title says it all. My brothers Note 2 will only boot past the Galaxy Note 2 boot screen if it is connected to the charger. It doesn't matter if it is a USB or wall charge. If the phone is connected to a power source it boots into the system fine, however, once you remove it from the power source it turns off. I was wondering if it could be a bad battery but the charge is showing it at almost 80%. Has anyone ran into something like this before? If I try to boot the phone without it being connected, it sits at the Note 2 screen for about 15 seconds and then shuts itself off.