HP Nw9440 Power - Page 31

Battery packs Charging multiple battery packs Multiple battery packs in the system charge and discharge in a preset sequence: ■ Charge sequence: 1. Primary battery in the computer battery bay 2. Optional accessory battery ■ Discharge sequence: 1. Optional accessory battery 2. Primary battery in the computer battery bay When a battery pack is charging, the battery light on the computer is amber. When the battery pack is almost fully charged, the battery light is green. The light is turned off when all battery packs are fully charged. The primary battery pack charges when it is inserted into the computer and the computer is plugged into external power. External power can be supplied through the following: ■ AC adapter included with the computer ■ Optional docking device ■ Optional power adapter Å WARNING: To reduce potential safety issues, only the AC adapter provided with the computer, a replacement AC adapter provided by HP, or an AC adapter purchased as an accessory from HP should be used with the computer. ✎ Older AC adapters will not work with this computer. Power 7-5