Very interesting. Thank you for posting. I have used both Walmart and Costco's battery in my cars and they never failed me so far even in -30c; but this is not because I had any amazing insights or data, but because I am cheap
the different performance of those 3 jci #27 is likely down to freshness.
age and whether they had any charge maintainence has a big impact on performance.
and walmart likely sells more than anyone else so freshest stock.
I love PF's channel & testing.
NOW, do I agree with everything or every way that he performs his tests? NO!
And if I had the facility & tools/equipment that he has I may do things differently but, that remains to be seen.
I am curious however, what type of results PF would have gotten if e.g., he were to purchase 6 EverStart MAXX or 6 AutoCraft GOLD in the same GROUP size(i.e., 35 or 24F etc.)?
6 of the same exact batteries from the same store shelf and test them the same exact way as in this video. I'll bet the results would be somewhat similar. But, this too remains to be seen!
Just for fun,