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Pre-heating batteries when its cold..

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  • Pre-heating batteries when its cold..

    Have any of you tried to pre-heat thd vatteries in the wintettime? When its realy cold at my cabin, and the batteries are located in a cold shed, i notised that i can't get the same amont of power out from the bank, as in the summer.. thats normal.. but what if i start the generator, use some heatfoil or cables under and around the batteries for heating? Run for a while.. batteries gets warmer, and works better.. ? What do you think? Waste of money and time?


  • #2
    Anticipating winter thermal loss is part of properly sizing the the bank. A warmer bank is more lively, but has a shorter lifetime. Run the generator, and simply charging FLA batteries will warm them up a bit, heater not needed, and while the generator is running, you have microwave and blow dryer too !
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

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    • #3
      Thanks

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      • #4
        BTW, this works with lead acid chemistries, I am not sure its applicable to Lithium Chemistries that I think have a hard low temp limit.

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        • #5
          Li batteries get really lazy below 40F. and are unsafe to recharge below 33F (actually 32F, but do you know how accurate your $10 thermometer is vs your $2K battery )
          Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
          || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
          || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

          solar: http://tinyurl.com/LMR-Solar
          gen: http://tinyurl.com/LMR-Lister

          Comment

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