Honda battery advice

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The optima red top battery in my 2014 CRV is getting up there in age believe it is from 2019.

Looking for a good agm battery and hearing the Optimas are not what they used to be ?

Thanks for you advice
 
I replace the 51R with a Group 35 if it fits. Also, older Hondas use a smaller negative cable; the V6 version is fatter.
What parts do you actually need? Just a new tray to fit the larger battery? I'm toying with this idea for my wife's car if/when the current battery dies. Wish Odyssey made a 51r but at this point in the cars life, I wouldn't spend the money for one.
 
What parts do you actually need? Just a new tray to fit the larger battery? I'm toying with this idea for my wife's car if/when the current battery dies. Wish Odyssey made a 51r but at this point in the cars life, I wouldn't spend the money for one.
There are Youtube videos. I believe @The Critic did it the right way by sourcing battery tray components from Honda. I did it by slightly modyfing the top bracket. I would look into the bottom tray.
 
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The optima red top battery in my 2014 CRV is getting up there in age believe it is from 2019.

Looking for a good agm battery and hearing the Optimas are not what they used to be ?

Thanks for you advice
X2 battery from Batteries Plus.

Virgin lead, superb quality. They are expensive, but worth every penny.

I pulled my X2 down to 3V when my alternator died and it lived to tell the tale. it took some nursing to get it to charge back up, but it was perfect for 3 years more after than when I sold the car.
 
There are Youtube videos. I believe @The Critic did it the right way by sourcing battery tray components from Honda. I did it by slightly modyfing the top bracket. I would look into the bottom tray.
 
I have been looking into getting a larger battery in the future for our 2014 CRV too. I think I would be looking at the H5 / Group 47 size. It appears that size is what Honda went to in subsequent years, and it's very close in size to the Group 35, except it does have some some small hold-down tabs on the bottom that stick out just a bit. I'm not sure how or if that is going to matter and I'm still watching this subject to learn. In addition the H5 is not so tall.

Also, I have read one report that believes the change in charging pattern (for fuel economy) that Honda started using around this time will not result in full charging on AGM batteries. Supposedly one can, and it would be best, to go in to a dealer and get a software update that "corrects" the alternator charging output from what it was originally programed. That program being optimized for the traditional flooded lead acid that was being used then and not an AGM. As mentioned, this is what I've read and I'm still looking for user reports with AMG to separate the fact vs. speculation.
 
Don't unnecessarily replace your battery. Buy an Ancel BA101 battery tester for $30 and simply test your battery a couple times a year. They are worth their weight in gold in preventing needless replacements. I went 14 years on my Tundra before the battery started testing a little weak.
 
Don't unnecessarily replace your battery. Buy an Ancel BA101 battery tester for $30 and simply test your battery a couple times a year. They are worth their weight in gold in preventing needless replacements. I went 14 years on my Tundra before the battery started testing a little weak.
+1
I have one battery nearing 10 years old that still works fine.
 
I have been looking into getting a larger battery in the future for our 2014 CRV too. I think I would be looking at the H5 / Group 47 size. It appears that size is what Honda went to in subsequent years, and it's very close in size to the Group 35, except it does have some some small hold-down tabs on the bottom that stick out just a bit. I'm not sure how or if that is going to matter and I'm still watching this subject to learn. In addition the H5 is not so tall.
You can install a Group 35 in a 2014/2015 CRV by purchasing the Honda OEM plastic battery tray for a 2012 Odyssey and flattening the bottom hold down tabs. A larger Group 24F battery will fit if you also replace the negative battery cable with a longer one (24", I believe).
Also, I have read one report that believes the change in charging pattern (for fuel economy) that Honda started using around this time will not result in full charging on AGM batteries. Supposedly one can, and it would be best, to go in to a dealer and get a software update that "corrects" the alternator charging output from what it was originally programed. That program being optimized for the traditional flooded lead acid that was being used then and not an AGM. As mentioned, this is what I've read and I'm still looking for user reports with AMG to separate the fact vs. speculation.
The charging profile on your 2014 CRV is not controlled by software. It is regulated by a solid state component in the underhood fuse box called an Electronic Load Detector (ELD) that varies the alternator charge based upon electrical demand. The video below shows the ELD on an older CRV, but the 2014 is similar.

 
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BTW, the top rated batteries in consumer reports is:
Size 35: X2 Power pure lead AGM score 95 out of 100 $350
Size 51R: Superstart Platinum AGM score 88 out of 100 $260

Bargain was the Size 51R Duracell flooded, score 81 out of 100 $105 (made by East Penn)
 
both of my hondas that had 51R’s in them now have everstart platnium 24f’s in them now. chunk the battery box and put a piece of old rubber under the battery. 4 year warranty and AGM for 179.99
 
Have no problems with Walmart 51R Maxx FLA in my 13' CRV. Get about 7-8 yrs out of them. Prices have gone up a bit, but what else is new. Never seen prices go down on batteries. Use a tender with a desulfator on them, which IMO, helps them last longer.
 
I wish I could do that on my HRV but there is not enough room....
 
Lots of good info with the reponses thank you !

I do have a Ancel BA101 battery tester and was planning on using it to see what it has to say about the current battery .

The last optima I had in my suv was in there for 7 years before it needed to be replaced.

Firgured I did not want to be pushing my luck as my wife drives that car mostly .
 
Well tested the battery this morning .

Health was 100 percent , 12volts recharge .

Was siting overnight in my garage after my wife got home last night .

Expected to see that votage higher, was short drive last night when she was out though .
 
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