Once the battery is removed, take wire cutters to the two wires attaching the battery to the motherboard and cut the red and black wires in the middle. Then, strip the both the red and black wires halfway with the wire stripper/cutter tool.

It's important to cut the wires in the middle to ensure an easy replacement. Also, be careful when stripping the wires because they are delicate and likely to break apart.

When cutting the wires, CUT THEM ONE AT A TIME to avoid shorting the battery.