Fiio M3 Pro - Frequently Asked Questions and Answers; What Power Charger is Recommended?; How Much Current Does the M3 Pro Have During Charging?; How Long Does It Take to Charge the M3 Pro?

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The M3 Pro will skip songs with decoding troubles to prevent hang-up.
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If the voltage of the charging adapter is too high, the M3 Pro may be damaged. Please
choose an appropriate charger; a DC 5V/1A USB charging adapter is recommended.
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If something abnormal happened, the M3 Pro may automatically reboot. This is a self
protection mechanism of the system; if the M3 Pro hangs up, you could hold the power
button for 10 seconds to force a shutdown.
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You need to first update the M3 Pro's media library before using the function of "Play
by category" and "Play all".
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Please charge the battery on a regular basis to secure the battery life if it is to be left
unused for a long time. Note that the battery should not be exposed directly to sunlight, fire
or other high-temperature environments.
10 Frequently asked questions and answers
10.1 What power charger is recommended?
The M3 Pro can be charged by any USB charger with standard 5V power supply, such
as computers, mobile power packs and other power chargers. It is recommended to use
power chargers with 1A current or above which will be faster.
10.2 How much current does the M3Pro have during charging?
When charged by the computer's USB port, the M3 Pro will automatically adjust the
charging current according to the current that the computer can provide; when charged by an
external adapter, the charging current is 500mA~1A.
10.3 How long does it take to charge the M3 Pro?