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F150 with Fisher, dumb battery question

Discussion in 'Ford Trucks' started by Menghi08F150LT, Dec 11, 2010.

  1. Menghi08F150LT

    Menghi08F150LT Junior Member
    Messages: 21

    Hi guys, I read here now and then but never post but once in a blue moon.

    Over the summer, the truck I use to plow my driveway and my family's driveway, a 2008 F150 with a 5.4, died on the road and it was diagnosed as an alternator and replaced. At this time, the dealer told me that if I have a plow (obviously I do with the controls in the bay), that I should consider upgrading my battery. I never thought about it until now.

    Well, in recent cold days I decided to start it up only to find that it died over the course of me letting it sit for a little while, about a month maybe. I charged it, it started and overnight it lost it's charge, so I'm going to assume that in that time the battery decided to short a cell or whatever. My initial "test" of sticking a volt meter on the system when it was running showed it's charging okay, so that's the good news. It's also the original Motorcraft battery (between 550 and 600 CCA, I forget), in my other truck the same exact battery lasted less than two years. I pulled it out last night in the 14 degree weather and it's sitting in my garage awaiting my verdict on it.

    Question is, what size should I consider for amperage? Should I go just for a regular special or find a deep cycle or a dual purpose (like from a boat)? I'm hoping to keep it at a slightly low price (I'm on a tight budget with the holidays) and I don't want to upgrade the alternator or upgrade to a two-battery setup since I only plow a few driveways, and we haven't even gotten any snow yet.
  2. geer hed

    geer hed Senior Member
    Messages: 275

    Go with the highest CCA battery that will fit in the truck. I have allways had good luck with the motorcraft batteries, I even know guys who have purchased motorcrafts for in other vehicles, "ie, GM,DODGE"
    I have also seen "more times than I can count" where a bad battery ruins the altenator. Now your dealer screwed up, since they put in a new altenater, they should have asked you if you wanted to upgrade the alt. to a higher output, not the battery.