I have a question a about the starting battery
for a 38' crusiing boat
with a 40Hp Yanmar
The previous owner had a SeamasterGold MFM 70 for the starting battery
-- CCA 750 @ 0F/-18C and amp hrs 85. This is described as a maintenance
free battery -- maybe a gel? Retails for around Aus$200.
I am keeping the boat
on a mooring
. I have a solar
panel but the mooring
is surrounded by talls trees. So solar charging
I have been away from the boat for 2 weeks and found the battery was dead (10.7v). Since I can only get to the boat every second weekend I am thinking of putting in an agm
. Lifeline have one that would fit at CCA 550 @ 0F/-18C and 45 amp hrs. Retails around Aus$480.
Would that be adequate for my engine
? Next size up is CCA 650 and 75 amp hrs but would be a difficult fit (would need to sit it on its side). Also about 60% higher in price
The house bank consists of 4 x 6v 232 amp hr golf cart batteries
new in 2020. They seem to be working well.
Would appreciate your thoughts/ideas. Thanks in advance.