Maxcom MM820 Plus User Manual page 6

Warning!
Only use batteries, charger and accessories that have been approved for use with
this particular model. Connecting other accessories may be dangerous and may
invalidate the phone's type approval and guarantee.
Whenthe battery is running low
To charge the battery, connect the mainsadapter to the wall socket and to the
charging socket
is displayed briefly when the charger is connected to the phone, and
when it is disconnected.
The battery charge indicator will be animated while charging. It takes
approximately 3 hours to fully chargethe battery.
is displayed when charging is completed.
Note!
Full battery capacity will not be reached until the battery has been charged 3–4
times.
The ambient temperature must be in the range 0 °C to +40 °Cwhen charging.
Batteries degrade over time, which means that call time and standby time will
normally decrease with regular use.
.
is displayed and a warning signal is heard.