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M535 / M336 / M337 battery life and replacement
Mouse battery information
Requires 1 AA alkaline battery
Expected battery life is up to 18 months
Installing a new battery
Slide the battery compartment cover down and then lift it off. Insert the battery, making sure that
it faces the correct direction and then replace the battery cover.
TIP:
and install Logitech Options to receive battery status notifications automatically.
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M535 / M336 / M337 battery status LED
Your mouse has an LED on the top that indicates battery status. When you turn the mouse on,
the LED lights up for about 10 seconds. It then turns off to save energy.