How to replace the Battery. WARNING: To avoid personal injury and damage to the product, use extreme care not to puncture,twist, or crack the battery. An internal puncture or rupture to the battery has the potential to cause a short which may result in a thermal event. Before you begin: Remove the base enclosure. Removal – Peel back the retention tape and disconnect the battery cable from the connector on the motherboard. Remove the four 3.5 mm P1 Phillips-head screws that secure the battery to the top cover. Lift the battery off the alignment pins on
the top cover and remove. Reverse this procedure to install the battery.