Hi, i think i have a problem with my laptop battery. When the battery gets low (20%) it takes more or less 5 minutes before it starts charging (says plugged in but not charging) but it completely charges the battery then without problems. The laptop is kinda old and the battery only lasts about 30 minutes with full screen brightness and takes about an hour and half before fully charging. When i plug in the charger with more battery (lets says 60% or so) it also says plugged in but not charging but it starts charging after 2-5 seconds. Hope someone can help me, the laptop is an HP Compaq 6910p and i only really started using it alot sincr 1 year and everything is working fine.