Zte MU5120 - Battery and General Safety Guidelines; Approved Accessories and Battery Service; Heat, Disassembly, and Disposal; Charging and Long-Term Storage

18
• Using ZTE-unapproved or incompatible battery, charger or power
adapter may damage your device, shorten its lifespan or cause a
re, 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 re.
• Do not disassemble, squeeze or puncture the device, as this can
cause explosion or re.
• Do not throw the device into a re 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.