[fitnessinstrob]

This morning, the Honda dealer checked my battery and said it failed a load test. It's a Delco 24RPS and only 9 months old and 4,500 miles. This replaced the original factory battery which didn't quite make it two years.Their reading showed 505 CCA and rated 600 CCA. They recommended i replace the battery.
So i took it back to the mechanic that installed it. They got the same reading, however their printout said the battery is good. Not sure why Honda said to replace the battery. 505 seems like enough cranking power.

 

[RickBlaine]

So, the people who want to sell you a battery said it is bad.

The people who sold you the battery- and would have to give you a free new one under warranty, said it was good.

Quite the conundrum....

By the way, your original battery should have been replaced for free, from the dealer, if it failed in less than 2 years.

 

[emeron]

1. CCA is measured at 0º F
2. There are more than one way to measure, each of which yield different results; DC load test and AC conductance test.
3. Driving to the second location may have added some surface charge.
4. During the time between measurement 1 and measurement 2, ambient temperature may have risen.

I am inclined to give everyone the benefit of doubt and say it is not impossible that they both made honest comments.

500 amps will definitely start a car. (9th gen 4cyl comes with a 425cca battery from factory.) The question is: would you like to have the option to sit in your car and listen to the radio, maybe roll up and down some windows etc with engine off, and then be able to start the car with what is left in your juice-box?

I would not be worried now, but best put a 24F 700cca battery before winter rolls in.

 

[fitnessinstrob]

My dealer did replace my original battery as it was under warranty. Perhaps i left that out in my first post. My leukemia causes fatigue and occasionally i leave out details.
When i moved to Arizona a year later, i decided to replace that one since batteries have a short life in the desert heat.
So today i was at the dealer for a service recall on the fuel pump. When they did theor multi car inspection, they mentiponed the battery failed a load test.
They didn't push or force a sell, they gave the readout that i showed my mechanic. His test showed the same reading, but the prinout said the battery was ok. The honda printout showed the shaded area in the replace section.
This is my regular mechanic., If its under warranty, he gets reimbursed.
Not being educated on batteries is the reason i posted here. My concern was both printouts showed the same cranking powe

 

[RickBlaine]

My concern was both printouts showed the same cranking powe

One has their tester set to FAIL at that CCA rating, the other tester is set to PASS at that CCA reading. But each detected the same CCA reading- so no argument there, unless the printouts show different CCA ratings for the battery when new.

There was a Sears near me that was notorious for entering in some crazy high rating such as "900 CCA" into their tester when they wanted your battery to FAIL by showing that it now has just 550 CCA output- even though your battery is rated at 600 CCA when new .