I own an Acer Aspire 5742Z. It is just over 2 years old. My most recent issue is with the battery. It is fully charged, yet when not powered by the AC adapter, the system hibernates due to a low battery level. I disabled the Acer Epower Management service due due it hogging resources. Any suggestions? I'm going to recalibrate my battery but I cannot devote the time until tomorrow. Any suggestions would be appreciated.