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How to beef up a Crest Spinbrush pro Answered

Hello, first off I'm new to this site. I found it Monday and I think it's great. A while back our local news had a tech guy on showing some new inventions with toothbrushes. Just for fun he also had a Crest Spinbrush with some extra batteries taped around the handle which raised the RPM's of the brush. Any idea what it would take to do this?? thank you Jethrow~


make that second word a battery not a batter :-)

a batter compartment / holder, and then soldering wires (one would have to disassemble the unit if one wanted to wire it in series { increasing the voltage }), but maybe could get away with soldering to the existing contacts if one wished to wire them parallel (increasing the amperage).