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Battery reserve capacity and OTA's

Ezdaddy

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Ezra
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2022 F150 Lariat 502A
Just went ahead and replaced my battery last night with a Duralast H8 from Autozone. I couldn't find the insulation (KL3Z-10A687-C) online, but my local dealer was able to order it and have it in a couple of days for me.

Fully charged with my Noco charger and then reset the BMS before letting it sit overnight.

Ford F-150 Battery reserve capacity and OTA's 20231207_171244

Ford F-150 Battery reserve capacity and OTA's 20231207_172118
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FordTruckMan

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Rob
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2021 F-150 Lariat SuperCab 502A, 3.5L EcoBoost.
The 760 battery on my 21 Lariat 500a was replaced after 1 year in service. The dealer replaced it with the same. Living in the northeast with cold winters I've been considering upgrading my battery for the additional CCA's as well as higher reserve capacity when larger OTA's are being installed. It's my understanding that Reserve Capacity is rated in minutes.

After researching this with my dealer's parts department here's what I found out.

The battery tray for all 2021 F-150's is the same part number. ML3Z-10732-D (including the diesel) and it is 14" x 7" where the battery rests. The hold down is the same for all as well. The battery's that were installed are listed below.

Part numberTypeGroupCCACAReserve CapacityLengthWidthHeightUsage
BAGM-48H6-760AGM48/H676095012010.946.897.48up to Lariat low
BAGM-94RH7-800AGM94R/H7800100014012.46.897.48Lariat high and above
BAGM-49H8-850AGM49/H8850106216013.946.897.48Diesel

I'm not sure if the cables on my 5.0 will reach the additional 2" if I were to upgrade to the 850 I'm still trying to figure this out. The 800 will defiantly work as I've seen on other trucks here on the forum.

Has anyone tried to install the BAGM-49H8-850 in there non diesel truck?
Are there any changes to would need to be made in BCM for BMS when changing battery size?

Additionally, Here the part numbers for battery heat shields / insulators for battery size listed above.

Cover Assembly - Battery - Ford (KL3Z-10A687-A)760 amp. 2021
Cover Assembly - Battery - Ford (KL3Z-10A687-B)800 amp. 2021
Cover Assembly - Battery - Ford (KL3Z-10A687-C)850 amp. 2021
Do I need to get one of these?
 
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Big Dog Daddy

Big Dog Daddy

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Mark
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Do I need to get one of these?
I don't know that the blanket actually does a real lot, but if you want to maintain a stock "factory" look under the hood, I would get it. I did when I changed mine to the H8

You'll need this one for the H8, Cover Assembly - Battery - Ford (KL3Z-10A687-C)

Looks like Tasca has them in stock for 20 bucks. There right up in your neck of the woods, you'll probably get it in a day or to.

2018-2023 Ford Heat Shield KL3Z-10A687-C | TascaParts.com
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