"D. J. Gooding" wrote in message
...


Does anyone know of a practical alternative?

If you find a *small* avionics shop interested in GA business, they may well
be willing to open the unit and replace the battery for an hour's labor and
the cost of the battery. You did not say where you are located, but as an
example Lamp Aviation in Carrolton Ohio often is willing to do this sort of
thing.


--
Richard Kaplan, CFII

www.flyimc.com