Marine Electronics Forum

Battery size

Old 11-28-2017, 04:08 AM
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Default Battery size

Looking for the correct battery sizes.
Twin mercury 150 four strokes
What size starting battery for each?

Also what size house battery?
House battery will run:
HDS 12 and HDS 9
3g radar
Lowrance autopilot
All LED lighting
VHF and radio (no amp)
1250gph livewell pump

Boat is used for offshore fishing so motors run 100% of the time and will have ARC chargers coming from each motor to the house battery.
Lil Cajun 85 is offline  
Old 11-28-2017, 04:55 AM
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here is the relevant page from "a" Merc 150 4-stroke Owners Manual -
I can't say with certainty it applies to your year/model

Name:  Merc_150_4_stroke_OM.jpg
Views: 150
Size:  79.1 KB

As for the house, if you in fact will always have both engines running - and charging it via ACR - then the size/type is not critical.

(I would probably go with a 24 marine "dual-purpose")
Fwpratt is offline  
Old 11-28-2017, 07:31 AM
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Good Info here....
marlinpruett is offline  
Old 11-28-2017, 09:55 AM
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Lil Cajun 85 is offline  

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