Many people get an exaggerated idea of the battery drain by relying on the battery status statistics. They look at the status and it says that the battery is "almost full". Five minutes later the battery is empty, and they say "man, what a drain!" The battery status statistics are basically worthless. In order to talk about battery drain, you need to measure how long the battery lasts from fully charged to almost empty. And even that is not so good, because wise techs here recommend against discharging your battery that far. I'm not criticizing the posts above, just adding one fact to help put seeming incidents of rapid battery drain into perspective. It's like having a speedometer that goes from 0-60 in 1 second. It could be that your car is really powerful. Or it could be that the speedometer is broken.