Humminbird Low Battery Alarm Setting?

[Ki Ki]

So another new to us boat question: new boat has a fish finder. Pervious owner set battery alarm at 12. When I went to that setting last it had a scale and it showed 13.5. Two questions, is 12 too low or high - what should I set it at so I can safely crank battery after stopping to fish?

Also, the 13.5 past the 12 setting- is that what my battery is at now and is that acceptable?

 

[NYBo]

Re: Humminbird Low Battery Alarm Setting?

Yes, that's the current voltage; 13.5V is about right when the motor is running over idle speed (or charging system cut-in speed). I would set the low voltage alarm a little higher, maybe 12.2 or 12.3. At 12V, it may not start the motor.

 

[Silvertip]

Re: Humminbird Low Battery Alarm Setting?

I wouldn't worry too much about not starting the engine. It's a 25 HP and likely can be pull started.

 

[E_S_A_D]

Re: Humminbird Low Battery Alarm Setting?

I wouldn't worry too much about not starting the engine. It's a 25 HP and likely can be pull started.

It can by inserting a rope in case ever needed, but it doesn't have a pull thing on it nor is the engine cover set up for that. It's a true eletric start OMC to Johnson system.