on board charger

fla firefighter40

Military Scuttle Butt Officer
Joined
May 18, 2009
Location
st augustine,florida
#1
i have the minn kota mk210 charger for my batteries. they're the optima batteries. the other day, i hooked up the charger after fishing. after a few hours i went to see if they were done charging. it usually takes about 3-31/2hrs, depending on how long i was out.
the chager was indicating that one battery was charged and the indicater light for the other battery kept flashing between charged and still charging. i've had it for almost two years and never seen it do that before. the batteries are about the same age. i think optimas are supposed to last about 3 years.
anyone know what might be up?