Canon EOS 55 Service Manual page 75

Part 2: Technical Information
3) Battery Level
Automatic battecy check and the camera's retention of settings when power is out func-
tion the same way as the EOS 50 / A2E). Table 2-12 shows the battecy levels.
Even when the battecy check shows
-]¢~ .
you can still release the shutter and get a
proper exposure. However, before executing a power-consuming operation such as
autoloading, shutter release, film advance and rewind, the camera displays the battecy
level automatically. If the battecy level is insufficient, the camera stops operating.
During bulb exposure, power is supplied only to the second curtain's electromagnet to
conserve power. With a new battecy, continuous bulb exposure of up to about fifteen
hours is possible. This compares to only about six hours for the EOS 50 / A2E.
Table 2-12 Battery Condition Indicators
Voltage Battery Mark Meaning
1 5.44V up ljlil'i] Fully operational - no problem
2 4.64 to 5.44V
c:::il
Operational, but have a new battery ready
' I ,
3 4.04 to 4.64V
-c::::il-
It's time to change.
, I '
' I ,
4 Under4.04V
-c::J-
Change the battery! Shutter Inhibit possible.
, I '
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