Help Please!!! Optimax 150 Voltage Drop

MrMongrue

Recruit
Joined
Sep 11, 2015
Messages
1
I purchased a used boat about two months ago. I have had nothing but trouble with it. It is a 2005 16ft triton bass boat with a 150 Mercury optimax on it. The problem I am haveing is that when the boat is setting idling its the smartcraft says that it has 11.8 volts, then when I go to plain off it drop to about 11.4 volts, but the battery never gets recharged and by the end of the day I'm down to 11.1 to 10.8 volts. With this awful beeping from the smart craft. I took it to my local service guy and he hooked it up and it came back that the alternator was bad, so I replaced that and got a new AMG blue top battery. I took it out again and it still not keeping a charge and the beeping is making me crazy. Help please!!!

Thank you
 

Teamster

Lieutenant Commander
Joined
Nov 8, 2010
Messages
1,923
What size is you starting battery??

A friend of mine had troubles like that, Went to a group 29 from a group 24 and the problems stopped,...

Opti's don't charge well at idle,....
 

ondarvr

Supreme Mariner
Joined
Apr 6, 2005
Messages
11,527
Did the mechanic check to see if it was charging correctly?
 
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