Though Alan Pell is the maker, the electronic assembly is by Melvyn
Wright (http://melwright.com/).  He is the expert on such matters.
I've had my busker organ for 15 years and have replaced the battery
countless times, learning that not all are equal.  The best source
is Batteries Plus.  I'm on the road now and don't have the battery at
hand; however, the staff at BP are experts.

The only reason my busker played intermittently was because of a weak
battery; on occasion, even if the battery was new.  If Melvyn Wright
isn't available, let me know and I'll be happy to explore further.

Angelo Rulli
St. Paul, Minnesota