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dennych1's avatar
dennych1
Explorer
Dec 16, 2020

Lithium heating pads

Has anyone added heat pads to your lithium batteries so you can charge below freezing. If you did what did you use and how did it work

16 Replies

  • deltabravo wrote:
    BattleBorn heat pads


    Nice, but very expensive $220 for essentially what the waste tank heater does at 1/5 the price (I guess you'd need one of the Battleborn heaters for each battery, for me that would cost over $1200!)
  • I have. I added a waste tank heater stuck to a thin aluminum plate. That goes directly under my 6 LiFePO4 batteries. I also have a battery temperature probe attached to my Victron setup to prevent charging if the temp goes below 5C. Batteries are surrounded by foam board insulation.
    I considered the grip heating pads, but the waste tank heater has the automatic temp kick in, so I went with that instead. Seems to work very well. It draws down roughly 6 amps per hr and comfortably kept the batteries 10 degrees above ambient. I didn't get a chance to measure under colder conditions as our season wrapped up first.
  • Someone I know used motorcycle or snowmobile grip heating pads.
  • Yes. I have Battle Born LiFePO4 batteries and just used their thermostat-controlled heating pads. Not cheap, but very easy.

    Rob

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