So I've been wondering if the battery drain in iOS 7 is related to a high CPU usage. I used SysStatsLite to monitor the "load averages" of the CPU and "CPU usage" for both iOS versions after a clean install. I switched off most battery draining functions, such as Parallax. I don't have a picture for this but generally the CPU usage is "normal" for both iOSes when idling. Both use roughly 3 percent of CPU. However the load averages are drastically different. With iOS 6.1.4, it's about 0.05 to 0.30, but for iOS 7 it's about 0.80 to 1.50. I'm interested in seeing your load averages. If have some time on your hands could you install SysStatsLite or a similar tool and report back? Thanks guys!