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Old 17 July 2015, 14:26   #1
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Battery a/h

My 75ah battery died. I have put a 56ah replacement in. Its to fire up a Yam 70 and work the Garmin. What ah do folk have and does it matter?
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Old 17 July 2015, 14:32   #2
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Ah aren't as important as CCA I'd expect you have enough of those if it's a car type battery. Ah matter if you want to run kit with the engine off, but presumably you normally have it on when using the garmin ?
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Old 17 July 2015, 14:42   #3
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Even if he doesn't the Garmin will draw <1amp I expect. Run for >12hrs and be OK. Probably still crank engine.

Any other electrics? Nav lights unless LED will flatten that far quicker than much else...
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Old 17 July 2015, 15:27   #4
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CAA ? Whats that?
The garmin is only on for a couple of hours whilst fishing without the engine running.Typical current draw at 12 Vdc: 450 mA
Max current draw at 12 Vdc: 2.7 A
Yep it is a car battery.
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Old 17 July 2015, 15:45   #5
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CCA = cold cranking amps. Amount of current the battery can supply at something like 34 degrees F.

MCA = Marine cranking amps. Same measurement, but at something like 62 degrees F.

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Old 17 July 2015, 15:56   #6
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Yep just found it on google.
Yam needs CCA 350A
Battery supplies CCA 500A
So all should be well.
Cheers to all you sparkie experts.
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