Battery query 067 or 644

[Seamaster817]

I need to replace my engine starting battery it is currently:
Part No. 067, Volt 12v, CCA SAE 620 Amps, AH (20h) 66 Amps.

my marina has
Part No. 644, Volt 12v, CCA SAE 640 Amps, AH (20h) 96 Amps.

What does all the abbreviations and numbers mean, how can I compare like for like

Any advice would be greatly received.

 

[DavidJ]

I don't know what the appreviations mean either but if the dimensions are the same and the poles are in the same position and the price is right then have it. The engine will only draw the current it wants so no harm done by a higher specification

 

[sarabande]

CCA - cold cranking amps. The power that a battery has to deliver x amps in 30 seconds at ) degrees C (differs a bit from continent to continent. SAE is for USA but is accepted here.) Think of it as sprint capability.

So 640 is not much more than 620.

Ah (20hr) - this is the number of Amps the battery can deliver over a 20 hour period and not die permanently. Think of it as capacity or endurance.

So 96 beats 66 by quite a lot.


Go for as many AmpHours as you can afford, provided the footprint and terminal configuration matches the old one. Though sometimes, with a newer "better" battery, you can get more capacity into the old space for the same size.

 

[mil1194]

My theory - although proved often wrong - is to fit the biggest ******* that the hole will allow.....that way you have done you damnedest if it isn't good enough......

 

[moonraker 36]

and i would get a couple of quote's from say motorsave and such as basically 620cca is a large car or van battery size.prob alot cheaper than marine price's......

 

[Bassplayer]

and i would get a couple of quote's from say motorsave and such as basically 620cca is a large car or van battery size.prob alot cheaper than marine price's......

But be carefull on that one as cheapo batteries are more prone to failure and are less vibration proof too. Go for a good make such as Yuasa or Varta. Just bought 4 x 664 batteries (110Ahr and 730CCA) only £70 + vat each for Yuasa. Shop around by all means but go for quality, and as suggested as big as will fit. Having said that, a battery case will hold a variety of capacities, so as with a lot of things - physical size ain't everything!

 

[mil1194]

I stand corrected! Physical size is indeed not everything.

 

[moonraker 36]

But be carefull on that one as cheapo batteries are more prone to failure and are less vibration proof too. Go for a good make such as Yuasa or Varta. Just bought 4 x 664 batteries (110Ahr and 730CCA) only £70 + vat each for Yuasa. Shop around by all means but go for quality, and as suggested as big as will fit. Having said that, a battery case will hold a variety of capacities, so as with a lot of things - physical size ain't everything!

never said get a cheap one..!!!
just that you could get a better price elsewere.....

 

[Seamaster817]

Hi all thanks for the replies, very useful, should be getting one this weekend.

Thanks

Brian

 

[SolentPhill]

Go for as many AmpHours as you can afford, provided the footprint and terminal configuration matches the old one. Though sometimes, with a newer "better" battery, you can get more capacity into the old space for the same size.

be aware that that is not quite true, you need to check the capicity of your charger before buying too big, if you buy a battery that cant be charged you will always have a battery at 75%.