4. Lift the back edge of the laptop up and slide the laptop toward the back of the battery slice.Charging Your Battery SliceYour battery slice charges whenever it is attached to the laptop and the laptop is attached to an electrical outlet through the AC adapter.You can also charge your battery slice when it is detached from your laptop using an AC adapter that is compatible with your laptop. Connect an AC adapter tothe AC adapter connector on the battery slice and to an electrical outlet.Power Status LightWhen the battery slice charges, the power status light (see Top View) indicates the following states:Charge GaugeThe operating time of a battery slice depends on the number of times it is charged. To check the battery charge, press and release the status button oncharge gauge (see Bottom View) to illuminate the charge-level lights. Each light represents approximately 20 percent of total battery charge. For generalbattery information, see the Dell Technology Guide at support.dell.com.SpecificationsLatitude E4200 Battery Slice1 battery slice 2 release leverStatus PatternAn unsupported, non-Dell AC adapter is attached toyour laptop.Alternately blinking amber light and blue lightTemporary battery failure with AC adapter present. Alternately blinking amber light with steady blue lightFatal battery failure with AC adapter present. Constantly blinking amber lightBattery in full charge mode with AC adapter present. Light offBattery in charge mode with AC adapter present. Blue light onPhysicalHeight 9.5 mm (0.37 inch)Width 297 mm (11.69 inches)Depth 186 mm (7.32 inches)Weight 614 g (1.35 lb) maximumAC Adapter