The Raytheon ml702 mouse uses wireless charging technology and can be charged through the accompanying charging dock. First connect the charging base to the computer or power supply, and make sure the mouse is placed on the charging base. When the mouse starts charging, the indicator light on the base will turn green. When the mouse is fully charged, the indicator will turn blue. The charging time is about 2-3 hours, and a single charge lasts about 30 days. During normal use, when the mouse power is less than 20%, the indicator light on the charging base will flash to remind the user to charge.