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Why don't camcorders switch to battery if AC is out?

Posted by James on 01/13/08 16:41

I have an old sony miniDV camcorder that when running on AC power, would
shutdown if there is a brown out, even if there is also a battery attached.
I have to pull out the AC plug from the camcorder in order to use the
battery.

Now, I just got a canon xh a1. This one is even worse: the battery has to be
charged off the camera. When the battery is in the camera, it cannot use AC
power. When using AC power, the battery has to be removed.

A better design is the way laptop computers work: you can use AC power and
charge the battery at the same time, and if the AC power goes out, it
switches to battery power automatically. Is there a good reason camcorders
are designed differently?



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