Battery a/h

Red Fox · 17 July 2015, 19:26

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?

Poly · 17 July 2015, 19:32

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 ?

ShinyShoe · 17 July 2015, 19:42

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...

Red Fox · 17 July 2015, 20:27

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.

jyasaki · 17 July 2015, 20:45

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.

jky

Red Fox · 17 July 2015, 20:56

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.