Donny I bought a pig tail on Amazon that snaps onto the 9V battery connector inside of the FS6. I connected the pig tail to a low current 9V adaptor (wall wort). No more changing the battery! I agree that it was a nuisance but I like the heavy construction and positive operation of the FS6 compared to the individual spring-hinged foot switches. YMMV.
Ok that alleviates the battery problem but you still have
to carry a wallwart
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. That is why 2 FS-5u pedals or more linked is so much better imo to travel with. They are truly workhorses.