Batteries on mobile devices are becoming a hot (sometimes literally) these days. On the one hand, that could help hasten the development of newer, safer, and more reliable power sources. On the other hand, it infuriates and worries consumers to no end. Even before the Galaxy Note 7’s battery fiasco, Surface Pro 3 owners were already up in arms about their own problems. But while a firmware update did seemingly fix the issue for those affected by it, it may have inadvertently trigger another, perhaps more debilitating, bug for others.