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27f AGM upgrade on a 22’ OR. Do I need a new battery tray?

Discussion in '3rd Gen. Tacomas (2016-2023)' started by 4-Day-Work-Week, Apr 28, 2022.

  1. Apr 28, 2022 at 10:10 PM
    #1
    4-Day-Work-Week

    4-Day-Work-Week [OP] Well-Known Member

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    I won’t be into anything too gnarly, but I put some good miles on the truck for work and fun. I would like to upgrade my battery to a 27f AGM that will support a full time, on board fridge and was wondering:

    1- how necessary is a beefier tray to protect the mounting surface and structure?

    2- where the hell can I find one if I do need one?
     
  2. Apr 28, 2022 at 10:14 PM
    #2
    RyanDCLB

    RyanDCLB Well-Known Member

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  3. Apr 28, 2022 at 10:16 PM
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    Mike402

    Mike402 Well-Known Member

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    I was in the same boat. You can order the 27f Toyota factory tray from OEM Part Source. The tray itself is the same quality as the one you already have, just bigger. The biggest concern is the supporting understructure, which will likely crack if you do any heavy offroading. Unfortunately not many good options to beef that up without extensive work. If you're mostly pavement pounding or towing, you'll be fine.

    Here's a copy and paste from my order

    Part Number Part Name Price Quantity Total
    74431-0C020 Battery Tray $34.17 1 $34.17
     
  4. Apr 28, 2022 at 10:21 PM
    #4
    4-Day-Work-Week

    4-Day-Work-Week [OP] Well-Known Member

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    Thanks, friend.

    The 27f is a bit lighter and only 10 amp hours or so less than the 31 so I think I’m sticking with it. I originally planned on a 31, but I’m only running the fridge (Iceco VL45), no lights or other fancy doodads. I am adding a Lensun hood panel so I’m hopping shedding a few lbs will be helpful since I’ll be topped off regularly.
     
    RyanDCLB[QUOTED] likes this.
  5. Apr 28, 2022 at 10:25 PM
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    4-Day-Work-Week

    4-Day-Work-Week [OP] Well-Known Member

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    Thanks a ton, homie!
     
    Mike402[QUOTED] likes this.
  6. Jan 28, 2024 at 5:16 AM
    #6
    Dfpftw

    Dfpftw 1luv

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    Can I get some photos please I’m in the market for a battery and the std size agm is fine for me too…
     
  7. Jan 28, 2024 at 5:42 AM
    #7
    na8rboy

    na8rboy 18 DCLB Sport Cement

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    The other thing to consider is your current alternator will not support/ charge (fully) an AGM battery. There is is a way to reprogram, I know OTT can reprogram to support a AGM. I was asked when tuned.
     
  8. Jan 29, 2024 at 9:46 AM
    #8
    Mike402

    Mike402 Well-Known Member

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    I've heard this claim many times and I've had an AGM for the last two years without getting a tune and/or changing the voltage. Whenever I connect it to a battery trickler, it fully charges almost right away, so I think this is an overblown concern. Haven't had any problems whatsoever
     
    e6400ultra and Shellshock like this.
  9. Jan 29, 2024 at 9:50 AM
    #9
    Shellshock

    Shellshock King Shit of Turd Island

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    Yup. It’s not something people need to worry about. 99% of people are gonna notice zero difference either way.
     
  10. Jan 29, 2024 at 9:51 AM
    #10
    lavrishevo

    lavrishevo Well-Known Member

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    H7, did not need to change the tray. I did modify the bracket a bit. 4 year free replacement. Use a battery tender to top off your AGM once a month. Make sure to set it to AGM mode. Don’t change the charging output on the trucks alternator, not good to ecu voltage regulators.

    IMG_3192.jpg
     
    Last edited: Jan 29, 2024
    Operxtor.exe likes this.
  11. Jan 29, 2024 at 10:18 AM
    #11
    YF_Ryan

    YF_Ryan Well-Known Member

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    Most trickle chargers use a lower/safer voltage to maintain the battery. They, like our alternators, don't always have the voltage needed to fully charge the AGMs. Quick look at the Battery Ttender brand says they charge at 13.3 to 13.5 volts, with an AGM liking 14 or higher volts.

    I ran two AGM house batteries to run my fridge and stuff for over a year and it worked without issue. When I did the voltage booster in my 2nd gen to pump up the voltage the at-rest voltage of my AGMs went up close to 0.5 volts. I got a sizeable increase in runtime/capacity. So yeah, they'll work fine without the increased voltage, but you'll use more of the AGMs capacity with higher voltage charging.
     
    Operxtor.exe likes this.
  12. Jan 29, 2024 at 4:09 PM
    #12
    Dfpftw

    Dfpftw 1luv

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