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D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
24-31-00-065
DC GENERATION SYSTEM - BATTERY CHARGER - FUNCTIONAL DESCRIPTION
DC GENERATION SYSTEM - BATTERY CHARGER - FUNCTIONAL DESCRIPTION
EFFECTIVITY
GUN 013-015, 111-114, 201-999 24-31-00
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D633A101-GUN Jun 10/2006
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
24-31-00-065
THIS PAGE IS INTENTIONALLY LEFT BLANK
DC GENERATION SYSTEM - BATTERY CHARGER - FUNCTIONAL DESCRIPTION
24-31-00
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D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
These are the functions of the battery:
* Give power to critical airplane systems (AC and DC standby
buses) if the normal power sources are not available
* Backup power supply for the AC system control and
protection
* Power supply for APU start.
Location
The battery is in the EE compartment, under the E3 rack. You
remove an access panel in the forward cargo compartment to
get access to the battery.
General Description
The battery is a 20 cell nickel-cadmium battery with a 48 amphour
capacity. With full charge, the battery gives a minimum of
30 minutes of standby AC and DC power.
The battery has an internal thermal sensor. The battery charger
uses this sensor to measure internal battery temperature. See
the BATTERY CHARGER page in this section for more
information.
Indication
You can see the output of the battery on the P5-13 electrical
meters, battery and galley power module . You see the voltage
and current output of the battery with the DC meter selector in
the BAT position. If the battery charger has power, you see the
output voltage of the battery or the battery charger, whichever is
more.
The amber BAT DISCHARGE light comes on when any one of
these battery output conditions are true:
* Current draw is more than 5 amps for 95 seconds
* Current draw is more than 15 amps for 25 seconds
* Current draw is more than 100 amps for 1.2 seconds.
Master caution and the ELEC annunciator usually come on with
the battery discharge light.The light goes out when the battery
output current goes below the limit for more than 1 second.
Master caution and the ELEC annunciator do not come on
during a DC power APU start.
Training Information Point
You remove the battery from the airplane before you do a
battery inspection or servicing.
DC GENERATION SYSTEM - BATTERY
EFFECTIVITY
GUN 001-012, 016-099, 101-110, 115 24-31-00
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D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
24-31-00-050
DC GENERATION SYSTEM - BATTERY
DC GENERATION SYSTEM - BATTERY
EFFECTIVITY
GUN 001-012, 016-099, 101-110, 115 24-31-00
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D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
24-31-00-050
THIS PAGE IS INTENTIONALLY LEFT BLANK
DC GENERATION SYSTEM - BATTERY
24-31-00
Page 22
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The main battery has these functions:
* Supply power to critical airplane systems (AC and DC
standby buses) if the normal power sources are not
available
* Backup power supply for the AC system control and
protection
* Power supply for APU start.
The auxiliary battery helps the main battery supply power to the
critical airplane systems (AC and DC standby buses).
Location
The batteries are in the EE compartment, under the E3 rack. The
auxiliary battery is forward of the main battery. You remove an
access panel in the forward cargo compartment to get access to
the batteries. You must remove the main battery before you can
remove the auxiliary battery.
General Description
Each battery is a 20 cell nickel-cadmium battery with a 48 amphour
capacity. With full charge, the batteries supply a minimum
of 60 minutes of standby AC and DC power.
Each battery has an internal thermal sensor. The battery’s
charger uses this sensor to measure internal battery
temperature. See the MAIN BATTERY CHARGER AND
AUXILIARY BATTERY CHARGER page in this section for
　
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