6 AA vs 8 AA
 

Almost certainly not.
There is always a slight risk, but many things that also work off car or
mains supplies are pretty accomodating on voltage. What they don't like is
reverse voltage and large spikes.

Brian

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From the sofa of Brian Gaff -

Blind user, so no pictures please!
"Jake" wrote in message
...
I have an electronic GPS datalogging device that is designed to be powered
through a 9v battery. It runs the battery down in about 2 hours, and
because it goes through batteries so quickly, I have been looking for
solutions to make it last longer

I have had success in replacing the 9v battery with a 6 AA battery holder
with attached 9v clip and this powers the device for significantly longer
with 2500 mAh rechargeables giving 7.2v.

I have seen 8 AA battery clips available, that would give me 9.6v but I am
concerned about overvolting and damaging the device. Is the extra 0.6v
likely to cause damage?