Zte MF920U, Quick Start Manual

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67
Battery Safety
WARNING!
The battery is not removable. Removal may cause fire or explosion.
• Using ZTE-unapproved or incompatible battery, charger or
power adapter may damage your device, shorten its lifespan
or cause a fire, explosion or other hazards.
• The recommended operating temperatures are 0 °C to 35 °C
and the storage temperatures are -20 °C to +45 °C. Extreme
temperatures can damage the device and reduce the
charging capacity and lifespan of your device and battery.
• Do not change or replace the built-in rechargeable battery in
your device by yourself. The battery can only be changed or
replaced by ZTE or ZTE authorized service provider.
• Do not place the device or the battery in or near heating
equipment, such as microwave ovens, stoves or radiators.
Keep the device and the battery away from excessive heat
and direct sunlight. If not, the device or the battery may
overheat and cause explosion or fire.
• Do not disassemble, squeeze or puncture the device, as this
can cause explosion or fire.
• Do not throw the device into a fire to avoid explosion.
• Please disconnect the charger when the battery is fully
charged. Overcharging may shorten the battery life.
• When not using the device for a long period, please charge
the battery about half and then store the device in a cool dry
place.