Checking the Backup Battery (2640-560x - 60x, 70x)

Checking the Backup Battery
  1.  Power off the computer and unplug the AC Adapter from the computer.
  2.  Turn the computer upside down.
  3.  Remove the DIMM cover and backup battery (see 'Backup Battery').
  4.  Measure the voltage of the backup battery.


Wire Voltage (Vdc)
Red +2.5 to +3.7
Black Ground

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