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Toyota batteries suck

Discussion in '2.5 Gen Tundras (2014-2021)' started by Stumpjumper, Jun 7, 2019.

  1. Aug 31, 2019 at 9:05 AM
    #91
    FrozenIn Alaska

    FrozenIn Alaska New Member

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    ...2017 Tundra with ~27K miles on it, should I be worried? Winter is coming.

    My 2005 4Runner ran its OEM battery for 11 years and ~250K miles. Anyone knows brand of battery that was? I changed it out because I didn’t want to chance it dying on my wife and kids in the middle of winter here in Alaska.
     
  2. Aug 31, 2019 at 9:18 AM
    #92
    00PS

    00PS New Member

    Joined:
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    ::1
    Vehicle:
    2016 Barcelona Red Limited Crewmax TRD 4x4
    3.5 years on stock battery and still strong. I drive the truck everyday with at least 2x start/stops.
     
  3. Sep 2, 2019 at 11:44 AM
    #93
    What the!?

    What the!? New Member

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    2017 Pro
  4. Sep 2, 2019 at 12:01 PM
    #94
    computeruser6

    computeruser6 Gott Mit Uns

    Joined:
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    Dirk
    Escondido
    Vehicle:
    2008 Regular Cab Tundra
    King 2.5 coilovers Nitto Exo Grapplers
    Are the OEM batteries still a wet cell? When was the last time you checked the specific gravity? What's the open-circuit voltage on the battery? For a lead-acid wet cell the OCV should be 2.1V which would put a fully charged battery at ~12.6V (~12.8 for a glass mat battery). Using a battery charger once a month (or more often if extremely cold) will improve your battery life.
     

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