Sharp AQUOS Crystal - Manual (Page 25)

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Storage: To help maintain performance and life of internal battery, do not store in the following
conditions.
l
Full (immediately after charging is complete)
l
Exhausted (too low for phone to turn on)
Battery level should be at approximately 40% for optimal storage.
Bulges on internal battery: Depending on usage, bulges may appear near end of battery life;
this does not affect safety.
When using flash: Your phone does not charge while flash is shining. Turning on flash with a
low battery level may cause your phone to close the camera even while charging.
Charge Using the AC Adapter
Charge using the included AC adapter (XN-2QC25).
If your phone or the AC adapter are wet, never connect the micro USB plug.
1. Insert the USB plug on the micro USB cable into the USB port on the AC adapter.
2. Insert the micro USB plug on the AC adapter into the charger/accessory jack on the bottom of
your phone.