I'd love it if all mobile devices were run off clockwork or solar power and didn't have to be charged ever. Unfortunately, this isn't the case and all of us are blighted by the problem of battery failure. As a result, it's a good idea to take control of your device's power by installing a battery monitoring application. PowerGuard is designed to help you keep track of your battery status, and comes with an impressive range of features to let you do that. Everything you need is housed neatly within four tabs. The Text tab gives you a breakdown of your charge, including data such as status, current, voltage, and even temperature. The Graphics tab displays the properties of your battery charge over time. You also get a Control tab, with a range of customisable settings, including auto-start, update interval, and the primary and secondary axis on the graph. Finally, the About tab gives you some basic information abut the program's developer. All in all this is a very complex app for monitoring battery status.