Time to replace the battery in my 2020 CX9. Looks like a group 35 battery will be needed. What was the CCA rating of the factory battery? I don’t see it labelled anywhere on the old battery.

 

Do you have i-stop? if you do, then you require a Q85 battery.

 

No i stop. Canadian market car if that makes a difference.

 

Welcome to the forum

 

2020 seems recent to need a replacement battery. Have you checked to see if something is causing a good battery to be drawn down? I recently replaced the battery in my 2016 just as a precaution before winter.

I looked on the Interstate Battery Ottawa site, and it shows Group 35 550 CCA as the original spec, and a 640 CCA available. The higher the CCA the longer the battery will live.* Here in the U.S. Costco has very good Interstate batteries at good prices, but when I looked at the Costco.ca site it showed only an AGM battery for C$240. Both the Interstate and the Kirkland labeled batteries look like they are made by Clarios Corp., formerly Johnson Controls. The Energizer labeled AGM battery might be a Clairos product as well.

*Batteries lose capacity at a relatively steady rate month by month. It takes only a small percentage of the battery's capacity to start the engine, and when the battery's actual capacity over a few years has dropped to less than that needed to start the engine the battery has "suddenly" failed. The greater the new CCA, the more months that battery can start the engine.

 

If the battery is maintained properly and routinely checked every new season, then battery issue can be found before battery damage can start. Unfortunately, very few people do this simple service and batteries prematurely fail.
There is other reasons for batteries failing in less time than expected which as well has been extensively talked about on a few threads on this forum.


ASE

 

Agree with a couple of above comments. Needing to replace a battery in a 2020 seems premature. I'd check potential other issues before spending $ on a new battery. What are the symptoms why you think it's the battery?

 

If the battery is tested with a load testing meter properly and it indicates a bad battery, where do you find any of that "PREMATURE"? Failing to replace a known BAD BATTERY at this point can and often will cause other problems. If anyone has their battery tested properly and it indicates bad the need to change it ASAP is in your best interest before other problem ocur by continuing to drive with a KNOWN bad battery.

There seems to be some OLD SCHOOL thinking lately on forums and threads about this. Really if you are driving any vehicle from about 2000 to newer the ECU needs a well maintained and state of GOOD condition battery. Otherwise eventually you will have more problems eventually.

 

Thanks for your expertise on this subject and I'll try to answer your question.
You stated....."If the battery is tested with a load testing meter properly and it indicates a bad battery, where do you find any of that "PREMATURE"?
So, it appears you are saying that if a load testing meter is put on a one year old battery and "indicates a "bad battery" that should not be considered "premature" wear? My point is an OEM Mazda battery should last an average of four years, therefore, needing a new battery in a 2020 might be "PREMATURE" lifespan. I was suggesting OP might want to check that there isn't another issue causing drain on the battery before going out and spending $ on a new one. As you also noted in your post "There is other reasons for batteries failing in less time than expected which as well has been extensively talked about on a few threads on this forum.". Exactly. Thanks again for sharing your expertise.

 

There is no such thing as average. This assumes that all driving conditions, engine operation and charging systems ,overall general condition of the engine and electrical components are AVERAGE. LOL
I have one customer 2019 Honda that puts 80,000 miles a year on his vehicle comes in for oil changes and simply electrical ignition tune ups. How is that average? I have another that put about 7,000 miles on his Ford Fusion garage kept and it seems to be in the shop every other month for a problem.
A warranty does not mean or represent any exact life spam of any battery, or for that matter anything.....basically having to do with a 12 volt battery because there are to many variables that can cause a battery to fail in less that the warranty period expressed from the seller or manufacture or retailer of the battery. Simple concept? Yet for so many seem to find it hard to grasp or understand?
I suggest that for those that don't go back to basic's and learn about the 12 volt vehicle operating systems and also the complete technical information about the 12 volt batteries .construction, materials used and specification for operations. Don't forget to learn about battery production dating.