i have had battery problems also.
i checked my batteries with a battery
tester they checked out fully charged.
seems the battery clip was a bit wanky
i called kala they sent me a new Shadow pre amp/tuner and battery clip... i replaced the battery clip
and it has been fine since. YMMV.
my big problem is the end pin jack loosens up a lot. been humidifying it seems to help.
yes to Duracell.
i checked my batteries with a battery
tester they checked out fully charged.
seems the battery clip was a bit wanky
i called kala they sent me a new Shadow pre amp/tuner and battery clip... i replaced the battery clip
and it has been fine since. YMMV.
my big problem is the end pin jack loosens up a lot. been humidifying it seems to help.
yes to Duracell.