Zte Optus MF971RS Getting Started page 19

• 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.
• If the battery is damaged or shows signs of swelling or
leakage, please stop use immediately and contact OPTUS
or an OPTUS authorised service provider for replacement.
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