What is the button? Not in handbook or guides.

Moni
Moni Member Posts: 3
in Battery/Electrical & Solar
Hello.  I have this button, I believe it heats the lithium batteries in the winter, my concern is how do I know if it's on? Is it safe to assume the red indicator means the heater is on?

Comments

  • RTWCTS
    RTWCTS Member Posts: 200
    That is indeed the switch to turn on the battery heater. The little red LED above the switch should glow when turned on... try it and see!
    2023 TAB 400 (former T@B 320 owners)
    Relentlessly Pursuing a Silverado EV
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  • donmontalvo
    donmontalvo Member Posts: 187
    edited May 2025
    As RTWCTS stated, it actually enables heating if the battery offers the feature. It doesn't start or stop or manage the heating. It enables the feature.

    I added a section to my schematic shows how it is wired when you have two LiFePO4 batteries in parallel. Before I added the second battery, the same setup was used except minus the "H" to "H" connection.

    First time I ever saw a two pole lighted switch. :)




    Don Montalvo | Retired Veteran | Full time boondocker
    Camper: nuCamp T@B 320S BBC | 12V 2x100Ah LiFePO4 | 600W Solar
    Tow Vehicle: Jeep JLU Rubicon | 12V 100Ah LiFePO4 | 200W Solar
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  • MuttonChops
    MuttonChops Member Posts: 1,994
    donmontalvo said:
    . . . actually enables heating if the battery offers the feature.
    . . . It doesn't start or stop or manage the heating. It enables the feature.
    Could you clarify and perhaps provide battery brand literature reference . . .

    As you are saying "turning the Switch On allows the Battery Internal Logic to decide if the heaters are needed for safe below freezing charging", that the battery is monitoring its temperature.  Yes?

    I'm not questioning the accuracy of your statement, 
    just interested in details and if this is battery brand specific    .
    '18 320 S,  pitched axle, 3020HE; PNW based
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  • donmontalvo
    donmontalvo Member Posts: 187
    https://battlebornbatteries.com/wp-content/uploads/2022/10/BBHeat-Instruction-Guide-Edition.HIM_HeatedRev007_06302022.pdf
    Don Montalvo | Retired Veteran | Full time boondocker
    Camper: nuCamp T@B 320S BBC | 12V 2x100Ah LiFePO4 | 600W Solar
    Tow Vehicle: Jeep JLU Rubicon | 12V 100Ah LiFePO4 | 200W Solar
    https://revkit.com/donmontalvo/ | https://donmontalvo.com
  • Moni
    Moni Member Posts: 3
    Thanks for all the info folks!

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