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Best battery for 7.3 with dual batteries

67K views 23 replies 21 participants last post by  Left Coast Geek  
#1 ·
I currently run 2 Duralast gold batteries from Autozone. I am thinking of going back to a Motorcraft batteries but not sure. Does anyone have feedback on what they are running?
 
#4 ·
Can't quite remember what I have in my truck (as I'm out of town for work for quite a while) but my batteries are about 8 years old, hold a perfect charge over the course of a month or longer and truck has absolutely no problems starting. Ill be interested to see if they are still charged or not when I get back home in a month or 2.
 
#6 ·
X2. Got 5.5 years out of my last pair and they got the snot beat out of them by south Texas summers!
 
#8 ·
Mine are just now going weak, they're Motorcraft and were installed in early '08. I'll be getting a pair of Interstate MTP-65's to replace them with @ around $130 each. This may be a dumb question but this will be the first time I replace the batteries for this truck on my own, the shop I'm getting the batteries through suggested replacing one at a time in order not to lose any of the memories I have set, can this be done safely without causing any electrical damage to the truck or the batteries?
 
#11 ·
Im sold on the X2POWER batteries sold by Batteries +. I bought 3 of them for my boat ($299 each) but they have an unconditional 3 year replacement warranty) So far I couldn't be happier and will definitely buy them form my truck when the current ones crap out (which seems to be every 12-18 months
 
#13 ·
Costco (Kirkland's Best). 3 year free replacement no questions asked, 100 month pro rated warranty. Can't beat that.
 
#15 ·
Most people don't realize most batteries are made by Johnson Controls or Exide, the plastic cases cast in different colors or a particular brand label applied. I worked for AutoZone for over 2 years before getting into law enforcement, and there wasn't a lick of difference in their batteries, Advance, O'Reilly, Pep Boys, etc. I had Wal-Mart Maxx Start group 65s in my '96 that lasted 7 years, and that's what I put back in it just before trading it in on my newest truck... the dealer let me swap / keep my warranted batteries. I'm running the same thing in my wife's 2004 Explorer, for good reason: there's a friggin' Wallet-Mart (sometimes two or three) in every town of any size from here to Nowheresville and back, so if I have a problem, I go in with my receipt and can trade it on another, usually 24 hours a day. Look closely, though, at warranty details... that 72 or 75 may not represent a number of months, and compare the periods of "free replacement" and pro-rated value if you have to replace it / them. I have a Motorcraft battery in my '66 Mustang because all the service parts under the hood are Ford / Motorcraft for purity reasons and it is not driven hundreds of miles at a time. My boss has a 2001 F-250 CC 2WD with a 5.4 and very low miles that still has the original battery. Yep. 12 years old and could die any time. We use Interstate MegaTron group 65s in our patrol cars because that's what the shop we use for electrical needs carries, and he doesn't mark them as fleet use so we get a longer "free replacement" period for vehicles that have extremely high electrical demands. So, consider price, warranty and proration, accessibility of replacement, and brand loyalty in making your decision. Then get out a 5/16" or 8mm socket and take the old one in with you for the core charge.
 
#17 ·
walmart batteries... I get 6-7 years out of a set. Can't beat it.

also if you haven't wired your glow plug control onto a switch (breaking the PCM ground).... DO IT. You can kill power to the glow plugs when cranking and/or after the engine starts, instead of needlessly stressing the batteries.
 
#20 ·
I'll add my two cents, I have an '01 excursion put in the AGM H65 Walmart batteries in 2019 they lasted about a year, but that was my alternator that ruined them both, nice thing is I took them both into walmart and walked out with two new batteries no questions asked. now two years later my ex hasn't been starting, checked my batteries and the one tied to the starter seems to be shot. will be swapping that out now, I might go with a larger cca, right now at 750, may go up to a 900 or maybe 850. I read somewhere that you should swap the batteries every year to balance the load and make them last longer, which I'll be doing from now on.
 
#21 ·
I just purchased odyssey’s 950 cca batteries for my truck. I’ve tried so many different brands and by far this battery has impressed the heck out of me! I’ve been replacing batteries every year to year and half. By then all of them wouldn’t start my truck when it got down below 35 degrees. I swapped out to odyssey’s and boom fasted starting since my truck was new. It was 10 degrees the other day and I didn’t plug in or anything to see if the new batteries would work and boom started right up. I would have had to put in on a charger and plug in block heater before and then it might start after a few hours. The odyssey battery uses virgin lead and has a full replacement warranty for four years. But the caveat is they are expensive
 
#23 ·
I looked at the Odyssey batteries, and at $350ish times two, said
'NO', not going to happen.

I bought two EverStart from Walmart with more CCA than the Odyssey brand....
they came with a 3 year Warranty, if they don't make the grade, I get a Free replacement.

So far, they spin the starter nicely.
I’ve bought several of the Walmart brand from the cheap economy one to the so called hood one and none have lasted more than two years and when you go back in after a year they give like 35 or 40 off a new battery. But if you have better luck with them I say keep buying them. However if your like me I was buying two batteries every 12-18 months so about 300 dollars. That’s why I went ahead and took a chance and I will say that they turn my truck over properly and it starts in seconds. Before it would take forever to start.
 
#24 ·
I'm a fan of the batteries made by East Penn, including their own Deka and Intimidator brands, as well as some of the house brand batts they make like Duracell. Always get the premium version with the highest CCA in the size you need (group 65 for our Ford diesels).