Factory AGM to sealed flooded in 2021 Paccar?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Deezl Smoke, Apr 16, 2026.

  1. Apr 16, 2026 #1
    Deezl Smoke

    Deezl Smoke Medium Load Member

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    I do not need the additional capacity of the AGM, but the factory put AGM batteries in this thing for start and apu. I have.....heard:confused: that AGM uses a bit different charge voltage and rate. But my long experience with flooded wet cells has been that they are pretty forgiving on charge rates.
    If I put sealed flooded deep cycles in this thing replacing the factory AGMs, am I looking at trouble?
     
    Deezl Smoke, Apr 16, 2026
    Deezl Smoke, Apr 16, 2026
    #1
    JMon Thanks this.
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  3. Apr 16, 2026 #2
    BoxCarKidd

    BoxCarKidd Road Train Member

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    As long as all your batteries are all the same I thank you are fine. Have done that several times.
     
    BoxCarKidd, Apr 16, 2026
    BoxCarKidd, Apr 16, 2026
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    Deezl Smoke Thanks this.
  4. Apr 16, 2026 #3
    Arctic_fox

    Arctic_fox Experienced mx13 execrator

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    I did that in my 2017 pete, my 2012 ram and my 2017 lonestar. Long as you arent mix and matching its fine and honestly AGMs are a better longer lasting battery anyway. They are also vastly better in the cold then nearly anything else you can get. Well dollar.for dollar anyway. There are some bettery batterys but the price is retarded.
     
    Arctic_fox, Apr 16, 2026
    Arctic_fox, Apr 16, 2026
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    Siinman and Deezl Smoke Thank this.
  5. Apr 16, 2026 #4
    Deezl Smoke

    Deezl Smoke Medium Load Member

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    Hillsboro Oregon
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    My use and weather are quite favorable, so I'm thinking SLAs will be the way I'll go. I'm sure soon we'll see LiFePO4 be the shtuff, and AGMs will be the price of SLAs now.
     
    Deezl Smoke, Apr 16, 2026
    Deezl Smoke, Apr 16, 2026
    #4
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