Ok the other day while hunting all my accessories stopped working. So I figured a Lose connection. Turns out my secondary batt which is my 925 only has 5 volts and is flat. So my question is. Is my smart isolator not working properly or is my battery bad. Been running this setup for about 6 months maybe. And is charging my battery now with a Atv charger that charges at 2.5 Volts a hour or charge it with full size charger that is agm compatible. Will either hurt my 925 or should hook the charger to my main batt and let it charge it that way. Thanks.