2015 Accord Battery Replacement 24F Conversion - Drive Accord Honda Forums | radio-pro.ru
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post #1 of 15 Old 01-25-2018, 04:59 PM Thread Starter
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2015 Accord Battery Replacement 24F Conversion

I actually went through a few older threads that helped me out when the 51R started acting up. So here's my input for the next guy/girl who needs to get their battery replaced. Since there's plenty of detailed threads around, i'll just get to the point.

I went with the BOSCH Platinum 24F AGM battery since i had a coupon, and also Pepboy's is having a sale going on. (Til the 31st I believe.)

I bought some garbage tie down stuff from Autozone but the battery was still moving around so I just followed the conversion list and ordered it through my local Honda parts department.

Hold down plate 31512-T2G-A00
Bolt (203mm) 31513-SDB-000
Bolt (235mm) 31513-T2A-A00
Battery Box 31521-T2G-A00
Battery Cover 31531-T2G-A00

Name: 24F Parts.jpg
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It's cheaper on Hondapartsnow with shipping then what i paid at the dealer by like $23 dollars.

Everything fits perfectly and I no longer have to worry about the car not cranking over anymore so overall it was worth it.



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post #2 of 15 Old 01-26-2018, 07:08 AM
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Wow, nice first post/write-up! Thank you!

Well written, problem solved, all info given right off the bat.

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post #3 of 15 Old 01-26-2018, 08:04 AM
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Can't you reuse the battery setting bolts? It would save an additional $7-10.

51R is 8.80" high
24F is 9" high

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post #4 of 15 Old 01-26-2018, 08:42 AM Thread Starter
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Originally Posted by GolftangoV2 View Post
Can't you reuse the battery setting bolts? It would save an additional $7-10.

51R is 8.80" high
24F is 9" high
You might be right. I just followed some of the threads that were posted here a few years ago. And I didn't want to risk having to wait another few days to order the J-bolt's if they didn't fit. I did have to reuse the nuts that were previously on the car though.
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post #5 of 15 Old 01-26-2018, 02:11 PM
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Thank you for sharing; very nice post.

I re-used both bolts. If one of the bolts is short, just flip up the tab under the front side of the tray. it is the same tab you hook the bolt to on the rear, but you don't see it on the front.
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post #6 of 15 Old 02-10-2018, 02:22 PM
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I ended up placing new 24F battery (instead of old 51R) in HM300BKS Snap-Top Battery Box picked up at local Walmart store. I agree it's not that tight as I would secure with bolts, but it's not that loose. Works for me.
Fix cost - 8$.
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post #7 of 15 Old 02-10-2018, 02:55 PM
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^^Where's the hold down?

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post #8 of 15 Old 02-11-2018, 03:42 PM
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^^Where's the hold down?
I take it from his post he didn't bother. Not smart

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post #9 of 15 Old 02-12-2018, 02:17 PM
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Murdered6 How close does that hose come to the left side of the battery cover? On mine it's touching. I will need to insulate it with something.

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post #10 of 15 Old 02-12-2018, 06:37 PM
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I really like that battery. built in handle, maintenance free, AGM, and gobs of power. I hope they're still around at that price when my time comes.

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post #11 of 15 Old 02-14-2018, 08:50 AM Thread Starter
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Murdered6 How close does that hose come to the left side of the battery cover? On mine it's touching. I will need to insulate it with something.
It is touching but that wall makes no contact with the battery.
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post #12 of 15 Old 02-14-2018, 08:52 AM Thread Starter
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I really like that battery. built in handle, maintenance free, AGM, and gobs of power. I hope they're still around at that price when my time comes.
I hope so too. I got like $60 off + another $15 for the 51R return. I think the BOSCH AGM is 4 years warranty with only the last year being prorated. Other than that, its been great since I haven't been stranded since changing out the battery.
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post #13 of 15 Old 02-14-2018, 09:05 AM
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Also, for the positive terminal. I installed mine with that plastic piece of the terminal pressing on the outside against the battery box, not in between the battery box and bottom tray extension. I suppose it doesn't matter but it seemed like that puts less strain on it and also doesn't have the box push as much on the hose.

I had some left over handle bar grip from a motorcycle. Cut a small section (~1.5") and placed it over the section of the hose that rubs against the battery box. Figured wear on the battery box is better than wearing a hole in the hose.

I'll post a pic later.

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post #14 of 15 Old 02-14-2018, 12:44 PM
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Here's the pics.

positive terminal


hose - it's an awkward area to work in/with. I'm sure there's some vibration/movement of that hose against the battery box which was bothersome. This should protect it. Do we even know what this hose is for??


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post #15 of 15 Old Yesterday, 12:12 PM
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Quote:
Originally Posted by Murdered6 View Post
I hope so too. I got like $60 off + another $15 for the 51R return. I think the BOSCH AGM is 4 years warranty with only the last year being prorated. Other than that, its been great since I haven't been stranded since changing out the battery.
There are, I think, still unanswered questions around actual benefits of putting an AGM battery into the vehicle that was not made to have an AGM battery.

AGM charges differently than flooded cell batteries. That is why on many cars that come with AGM battery, a "registration" of a new battery is needed when battery is replaced. Maybe the right word should be "reset". And this is because AGM batteries need higher voltage to charge as they age. Based on some reading that I did on the subject, even temperature comes into play with AGM charge voltage and car will do the right thing to supply higher charging voltage (14.2V to 14.8V) based on age and ambient temperature.

The net result, I think is not something that is "unsafe" but rather something that falls under "not optimal for battery life". In other words - it can be, that an AGM battery in the car that is not made for it will be in constant undercharged condition.

Which, is not good for the battery long term. Possibly negating the long-term benefit of AGM in the first place, when used in a non-AGM designed charging circuit.

In other words - if you replaced your flooded cell battery every 4-5 years in a car that was designed for it, you might be replacing your AGM battery every 4-5 years, in the same car.


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