Mio MOOV M400 User Manual page 12

Note: When the Mio is connected to a computer, it is recognized as an external mass storage device. Do not delete
any files pre-installed in the Mio. Deleting files of which the function is unknown can cause programs or features to
malfunction.
Moov M300-Series
CAUTION: For optimal performance of the lithium battery:
Do not charge the battery where the temperature is high (e.g. in direct sunlight).
There is no need to fully discharge the battery before charging. You can charge the battery before it is
discharged.
When storing the product for a long period of time, be sure to fully charge the battery at least once every
two weeks. Over discharge of the battery can affect the charging performance.
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Moov M400-Series