Battery Status Led; Charge The Battery - LiftMaster 8550C Mode D'emploi

Battery Backup

BATTERY STATUS LED

NOTE: The Battery Status LED is most visible
with the garage door opener light off. Battery
does not have to be fully charged to operate
the garage door opener.
Battery Status LED

CHARGE THE BATTERY

The battery will take 24 hours to fully charge. A fully charged battery supplies 12Vdc to the garage door opener for one to two days of normal operation during an electrical power outage. Once the
battery voltage drops too low, the battery will no longer operate. After the electrical power has been restored, the battery will recharge within 24 hours. The battery will last 1 to 2 years with normal usage.
To obtain maximum battery life and prevent damage, disconnect the battery when the garage door opener is unplugged for an extended period of time.
NOTE: Door operation may be limited until the battery is fully charged. The garage door opener lights will not turn on during battery backup mode.
GREEN LED:
All systems are normal.
• A solid green LED light indicates the
battery is fully charged.
• A flashing green LED indicates the battery
is being charged.
ORANGE LED:
The garage door opener has lost power and is
in battery backup mode.
• A solid orange LED with beep, sounding
approximately every 2 seconds, indicates
the garage door opener is operating on
battery power.
• A flashing orange LED with beep,
sounding every 30 seconds, indicates the
battery is low.
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RED LED:
The garage door opener's 12V battery needs
to be replaced.
• A solid red LED with beep, sounding every
30 seconds, indicates the 12V battery will
no longer hold a charge and needs to be
replaced. Please call for replacement
battery to allow your system to operate
during a power outage.