PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES BATTERY AND POWER MANAGEMENT 7
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Conditioning a Battery Pack
ÄCAUTION: To avoid losing data, Make sure that all information is saved befo re
completely discharging a battery pack.
To condition a battery pack, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until the fast charge arrow on
the status display disappears. The battery gauge may read 100% for a period of time
before the arrow disappears.
Note: Do not unplug the AC adapter until the arrow disappears.
2. Unplug the AC adapter and allow the battery to drain until the Notebook enters
Hibernation mode. The Notebook can be used normally during this process.
Note: If the AC adapter is connected while the battery is draining, the process must be
repeated beginning with step 1.
The battery is now reconditioned. Plug in the AC adapter and begin using the Notebook.
The table below shows typical battery charging times.
Disposing of a Used Battery Pack
In the interests of safeguarding our environment, Compaq Computer Corporation
recommends that nickel metal hydride (NiMH) and lithium-ion (Li-ion) battery packs be
recycled. Battery packs should be handled in accordance with country, state, province, or
local regulations.
ÄCAUTION: Never attempt to open or service a battery pack. Opening a battery
pack not only damages the pack and makes it unusable, it also exposes potentially
harmful battery components.
Li-ion Enhanced
Battery Pack Charge Time
Computer On Line 4.75 hours
Computer Off Line 3.00 hours