Hi,
I am currently experimenting with using an external power source to reduce the weight of the camera.
I can load 6 AA (rechargable) batteries into a dual "D" battery holder, where 3 AA batteries in parallel now replace the D battery originally intended for the holder. The D batteries in the holder are in series. Output voltage is 2.7 V as expected.
The cameras work OK with two AA batteries in the battery chamber, and also with external power input via the power input socket from a generic power supply @ 3 V.
However there seems to be a problem when batteries are used. I can start up the cameras (A470) in replay mode and load CHDK, so that I can see the battery indicator is at 100%. But switching to a shooting mode invariably results in the lens not being deployed or the dreaded "Change batteries" message. I am currently using simple low voltage jumper leads for the connection, but resistance doesn't seem to be the problem, and it doesn't seem to matter whether I use 2, 4 or 6 batteries.
Any idea what might be going wrong here? Or any other suggestions for extending shooting time with external batteries?
Cheers and all the best, Lee
