Service Manual
Page 143
... HP Battery Optimizer from any nearby heat source. Some PCMCIA cards draw power even while not in AC adapter or insert charged battery Check battery and contacts. Heavy modem use . Plug in use can affect battery life. If available, try another battery if available. Move notebook away... from Start menu. AC adapter. Check battery and AC adapter. Try default settings. Try another battery and AC adapter. Make sure AC adapter has correct power rating. Make sure AC adapter is low. Unplug AC adapter and allow battery to select Portable/Laptop power scheme...
... HP Battery Optimizer from any nearby heat source. Some PCMCIA cards draw power even while not in AC adapter or insert charged battery Check battery and contacts. Heavy modem use . Plug in use can affect battery life. If available, try another battery if available. Move notebook away... from Start menu. AC adapter. Check battery and AC adapter. Try default settings. Try another battery and AC adapter. Make sure AC adapter has correct power rating. Make sure AC adapter is low. Unplug AC adapter and allow battery to select Portable/Laptop power scheme...