greypoint

I just recently replaced original battery at dealership. After connecting to CTEK charged to full, using battery tester I found out it only showed 663 CCA fully charged using type AGM flat plate. That doesn't sound right. The full capacity should be 900 CCA? Does the new battery have issues?

kajtek1

What meter did you use?
I bought new H8 battery at Costco and my Solar tester show 1600 CA on 1000 CA rated battery.
CCA applies to temperatures about 0F.

John Ha

I'm sure you're aware that you have to do battery tests connecting directly to the battery rather than to the jumper posts in the engine bay. That aside, I'd take it back to the dealer that installed it and ask them about it.

whitewagon

Also check the date code on the battery

johnw5839

Exactly, thanks!
I just replaced my Varta battery with the H8 Autozone AGM platinum and couldn’t figure out why the CCA readings were about half of what they were supposed to be although the battery is new and manufactured in the past couple of months, and registered with my car using my FOXWELL NT710. That’s because I was testing the battery using the jumper posts under the hood instead of testing the battery directly. The battery works well and it saved me $600-700 based on the quote I got from my local MB dealer. Hope it helps someone else.