Subject: Can a 3 volt battery be used to power a potato clock? Voltage too high?

I am trying to purchase LED clocks in bulk at a cheap rate. These clocks will be
used for science projects for a non-profit that I am working for in which
children will experiment with powering a potato clock. I have found a reasonably
priced LED clock that uses a 3 volt battery but have been unable to find a
reasonably priced LED clock that is powered by a 1.5 to 2 volt battery. I am
wondering if using a clock with a 3 volt battery would be too high of a voltage
and the potato clock would not work.

Re: Can a 3 volt battery be used to power a potato clock? Voltage too high?