Power44To install the battery pack, simply reverse theprocedure as follows:1. Insert the battery pack into the batterycompartment.2. Slide the battery compartment cover latchtoward the rear of the computer until it snapsinto position.Charging the BatteryTo charge the battery, place the battery packinside the battery compartment and plug the ACadapter into the computer and an electrical outlet.Depending on the state of the battery and how thecomputer is being used, the computer uses one ofthree charging modes: Rapid Charge, Charge-In-Use, and Trickle Charge.