[. . . ] Thank you for your purchase of the Targus Wireless Compact Laser Mouse. [. . . ] Remove the battery cover from the top of the mouse by using the notch on the back. Remove the battery safety clip by squeezing the center of the clip and sliding it back, towards the rear of the mouse. Replace the battery safety clip by sliding it forward until it clicks into place and then replace the battery cover. (B) Turn on the mouse by sliding the power switch to the ON position, located on the bottom of the mouse. When the mouse is turned on, the LED illuminates for 3 seconds and then fades Battery Life Indicator out · The low power light will start flashing every 3 seconds when less than 5% of the battery power remains. To extend the life of your battery, turn off the mouse while travelling or when you're not using it. [. . . ] To extend the life of your battery, turn off the mouse while travelling or when you're not using it. [. . . ]