AGM batteries ?

jus2shy wrote:

FishOnOne wrote:

jus2shy wrote:

Just make sure when you switch to an AGM battery that isn't the same group number/size as your current ones, that you have enough cold cranking capacity.

J2S,
Can you clarify your last statement.

Some battery manufacturers have their own battery sizes that don't quite pair up with manufacturer battery sizes. For example, my wife's Subaru. I just installed an Optima battery in there. The Optima unit was smaller dimensionally, however it's specifications did have nearly twice the cranking power on there along with more amperage in general. I don't know the numbers off the top of my head, but what I was basically getting at is to make sure that the battery will meet the starting needs for your vehicle and fit within the physical envelope of your battery storage system.

Optima is probably the biggest offender out there in non-standard battery sizes while Trojan and Odyssey makes a myriad of batteries in more of the standard group sizes seen in more vehicles. I saw someone mention Deka as well, they're a pretty large supplier of batteries and manufacture to most vehicle sizes. But sometimes you may own a vehicle that doesn't have a standard battery size and you'll have to find the next "Closest" thing out there.

Thanks for clarifying.... I also heard but don't have any experience that the Opitma's are not as good as they use to be.

Fact or Fiction?

I do know the standard lead acid Trojans are really good batteries.