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Old 23 March 2015, 20:22   #1
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What Ah battery for 120hp?

Hi lads as above I have a 6m rib 120hp engine,

What Ah battery are ye using?
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Old 24 March 2015, 01:20   #2
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Hi lads as above I have a 6m rib 120hp engine,

What Ah battery are ye using?
Depends on the engine, different manufacturers have different requirements, generally the modern, injected ecu controlled engines have higher requirements. It's not all about AH rating, for a starting battery, MCA/CCA is more important.
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Old 24 March 2015, 03:26   #3
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i use a standard 75ah leisure battery on my 2 stroke 120
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Old 24 March 2015, 05:00   #4
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75ah is what I was going with, thanks!
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Old 24 March 2015, 09:18   #5
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As PD has stated, CCA is important.
Ah is purely the max amount of charge the battery can hold. CCA is the measure of the batteries ability to provide the high currents required to start your engine, and is a fundamental of the battery design.
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Old 24 March 2015, 09:47   #6
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What CCA would be needed for most standard 2 stroke 120hp engines so? Any ideas?
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Old 24 March 2015, 10:03   #7
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What make/model of engine do you have. The engine manufacturer should specify the MCA/CCA rating required. CCA rating is the most rigorous of the two parameters.
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Old 24 March 2015, 10:03   #8
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What CCA would be needed for most standard 2 stroke 120hp engines so? Any ideas?

675 should be plenty


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