Best replacement battery

[zacko11288]

+1 for Optima yellow top H7, I've had zero issues with mine and keep it on a trickle charger when the trucks not in use

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[FaaWrenchBndr]

I can't imagine that Ford or anyone else (well, maybe fiat or yugo) would be dumb enough to do it (although I've seen dumber), if both batteries are fully in the same circuit without limiters (which cost voltage, etc.), one *will* charge the other. Maybe not a lot, depending on circumstances, but the weaker *will* drain from the stronger.

The isolator SHOULD prevent parasitic draw of the aux batter from the main……shouldn’t it?

 

[Polo08816]

https://www.walmart.com/ip/EverStar...ize-H8-LN5-49-12-Volt-900-CCA-150-RC/40647529

Done.

 

[Jmitchelltfo]

https://www.walmart.com/ip/EverStar...ize-H8-LN5-49-12-Volt-900-CCA-150-RC/40647529

Done.

any changes made to help it fit?

 

[dochawk]

The isolator SHOULD prevent parasitic draw of the aux batter from the main……shouldn’t it?

"should" is the operative word!

But I rather expect that it was done properly.

 

[HammaMan]

No, the truck won't last 24hrs w/out the reserve capacity of the big batt. The isolator is always closed. It briefly opens for rolling starts.

 

[higgledy]

I just changed my battery in my 2021, 5.0 engine. I installed the H8 battery (the one for the diesel). In the owners manual it says I need to calibrate the steering angle sensor. Did any of you do this step? Seethe attached screenshot from the manual.

 

[Big Dog Daddy]

I just changed my battery in my 2021, 5.0 engine. I installed the H8 battery (the one for the diesel). In the owners manual it says I need to calibrate the steering angle sensor. Did any of you do this step? Seethe attached screenshot from the manual.

No, you don't need to do this. Just reset the BMS and you're ready to go. I Changed my 21 5.0 to an H8 a couple of years ago, haven't had a problem since then.

 

[higgledy]

No, you don't need to do this. Just reset the BMS and you're ready to go. Change my 21 5.0 to an H8 a couple of years ago, haven't had a problem since then.

Thank you

 

[higgledy]

I just did the battery management system reset. With accessory power on, I flashed the high beams 5 times, then pressed the brake pedal 3 times. The battery light flashed a few times and went out. is this all I need to do?

 

[higgledy]

I just did the battery management system reset. With accessory power on, I flashed the high beams 5 times, then pressed the brake pedal 3 times. The battery light flashed a few times and went out. is this all I need to do?

BTW it’s starting with some power now. Before it was geezing to turnover

 

[DarkBlade1000RR]

I just replaced mine a few days ago w/ the Interstate H7 AGM battery from Costco:
Superior AGM Technology

36 month Limited Warranty*
Group Size H7 (94R) AGM
$169.99**
**Refundable core charge of $15.00 not included

Availability by location will vary
How To Buy
In Select Warehouses
Online and Ship to You

FIND A COSTCO WAREHOUSE
Your Battery Information

Item Number	1624800
Group Size	H7 (94R) AGM
CCA	850
CA	1000
Voltage	12
Ah	80
Length	12 7/16
Width	6 15/16
Height	7 1/2
Weight	52
Termination Code	TOP
Wet/Dry	D

Odd thing was that the day prior to changing it, Ford dealership did the oil change and checked the battery as "good" but yet I was still having issues w/ the welcome lighting coming on and the battery saver message popping up.
Not having any further issues after the battery change

 

[Kanuck]

All the tech probably did was put a load tester on the battery and it passed. Did not do the test that takes a hr or 2 that Ford needs to fail the battery.

Side note: with my 2011 F 150, my battery would FAIL every time the dealership had batteries on sale or battery service promo..... I had that battery for 6 years...never failed me... lol Bought the truck used as well

 

[FaaWrenchBndr]

Napa

 

[dochawk]

is this all I need to do?

Almost.

Now click your heels together three times, and recite . . .

?

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