When buying an AGM what specs are most important?

[akuma4u]

When buying an agm battery, which battery specs are most important? Cca hca ah?

I was told ah is the main thing the higher the better. But then i was told its all about how many amps it can produce..the higher the better.. so should i be looking at the ah cca or hca??

 

Thanks

[Backwoods]

Will the battery only be a secondary battery or will it be your starting battery under the hood?

 

If it's just a secondary battery, AH is what I'd be looking at. As it will be used for reserve capacity.

 

Starting batteries need cranking amps, cold cranking/hot cranking. So CCA and HCA will play a bigger role.

[akuma4u]

6 hours ago, Backwoods said:

Will the battery only be a secondary battery or will it be your starting battery under the hood?

 

If it's just a secondary battery, AH is what I'd be looking at. As it will be used for reserve capacity.

 

Starting batteries need cranking amps, cold cranking/hot cranking. So CCA and HCA will play a bigger role.

Its rear batt/secondary batt. 

Thank you for your reply. I will just get the biggest ah batt i can get for the rear.