"Jim Macklin" wrote in message
news:BnzBf.69434$QW2.59809@dukeread08...
Aircraft batteries should be charged on a constant amperage
of about 2 amps and the voltage should be less than 14.5
volts. Standard automotive chargers will fry an aircraft
battery.

An amperage selectable one should not. A popular charger configuration out
there, is something like 2 - 10 - 50 amp chargerm and that should only be
putting out about 14.4 volts.
--
Jim in NC