Problem in my battery during the installation of Windows 8.1
Hello experts,
I updated my Windows 8 to 8.1. Before the update, my laptop's battery was 6-8 hours. But after the update, the remaining battery level was 3-4 hours. I then used the Windows Backup and decided to wipe my hard disk drive. The battery level becomes 7-hours left. I'm not sure if this issue occurs because of the update or because of the files that was deleted from my hard drive. Can someone tell me what is causing the battery level to change?








