HP nw8240 Hardware and Software Guide - Page 51
Charging a New Battery Pack, Charging a Battery Pack in Use, Optional AC adapter
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Power The primary battery pack charges when it is inserted into the notebook and the notebook is connected to external power. External power can be supplied through the following: ■ AC adapter ■ Optional AC adapter ■ Optional docking device ■ Optional automobile or aircraft adapter ✎ An optional aircraft adapter can run the notebook, but it cannot charge a battery pack. Charging a New Battery Pack Fully charge the battery pack while the notebook is connected to external power through the AC adapter. A new battery pack that has been partially but not fully charged can run the notebook, but the battery charge indicators may be inaccurate. Charging a Battery Pack in Use To prolong battery life and increase the accuracy of battery charge indicators: ■ Allow a battery pack to discharge to 10 percent of a full charge through normal use before charging it. ■ When you charge a battery pack, charge it fully. Hardware and Software Guide 2-23