Motorola MD7080 Guide De L'utilisateur page 23

Plug the power cord into the back of the base and
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into an outlet.
Rest the handset in the base so the charging
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LED lights.
For the initial charge, charge the battery for
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at least 16 hours.
Note: Every time a battery is plugged in, the phone
must be charged in the base for at least 10 seconds
for the phone to properly restart.
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