Re: Battery Drain on Canon EOS Digital Rebel

MitchAlsup_at_aol.com
Date: 01/19/05 

Date: 19 Jan 2005 11:20:08 -0800

While the camera is ON and inactive, the main processor is continuously
scanning the various buttons to see if any new activity is taking place
in order to respond in the minimum amount of time. The scan takes place
at human time scales, so the processor should still be sleeping 98% of
the time. On my 20D, I have left the camera turn off as set at the
factory (8 minutes?), and the camera wakes up only with the shutter
button (1/2 depress). But still, I inadvertently left it on for over a
week and the battery still had around 1/2 charge left in it. The 20D is
a little more modern, and is designed for slightly lower poser use.

Li batteries do not need training (like old NiCads), however, they
still like being charged up to the max, and this orrurs many minutes
after the charger thinks the battery is fully charged. This is why
Caona recommends that the first charge, the battery is charged up to
where the charger likes, and then left in the cahrger for an entire
hour afterwards. The older NiCads were fully charged when the voltage
peaked and then wend down with more charging, so their peaks were easy
to read from the cahrger, LI do not have this property.

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