ATMT MP180 - Manual (Page 4)

MP3 HARD DISK
Before Using the Product
2
Charging the Battery
The built-in high capacity Li-polymer battery must be fully charged before
first-time use or when the battery has not been charged for over 6 months. It
takes about 6 hours to fully charge the battery. (To take full advantage of the
battery, charging the battery for 10 hours before initial use is recommended.)
You can charge the battery with either the included AC adapter or USB cable.
Charging with USB cable
Charging with AC adapter
1. It is important to re-charge the battery ASAP when battery runs out.
2. Li-Ion batteries need to be used for maximum performance. If you
don’t use your device often, be sure to fully charge your battery at
least once a week.