What Ah battery for 120hp?

Johnny1 · 24 March 2015, 00:22

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

What Ah battery are ye using?

Pikey Dave · 24 March 2015, 05:20

Quote:

Originally Posted by Johnny1

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.

Festinghouse · 24 March 2015, 07:26

i use a standard 75ah leisure battery on my 2 stroke 120

Johnny1 · 24 March 2015, 09:00

75ah is what I was going with, thanks!

Ian M · 24 March 2015, 13:18

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.

Johnny1 · 24 March 2015, 13:47

What CCA would be needed for most standard 2 stroke 120hp engines so? Any ideas?

Ian M · 24 March 2015, 14:03

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.

Pikey Dave · 24 March 2015, 14:03

Quote:

Originally Posted by Johnny1

What CCA would be needed for most standard 2 stroke 120hp engines so? Any ideas?

675 should be plenty

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