Sizing solar watts to battery bank

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Comments

  • bigbillsdbigbillsd Registered Users Posts: 27 ✭✭
    @Mountainman,  its December,  I was wondering what you are experiencing on the charging front?   Are you able to charge those batterys fully in 4 hours of sun?   -Bill
    4 each Renogy 160w Solar Panels mounted flat on RV roof, Serially connected @ ~80v,  Victron 100/50 MPPT controller.  520AH LA batteries @ 12volt, 2800w PSW Magnum Inverter.   Bogart Trimetric. 
  • mountainmanmountainman Registered Users Posts: 145 ✭✭
    edited December 2018 #33
    14 days into this month and only 2 or 3 days of sun. My generator ran so much it needs an oil change. Pv watts says 4 hrs the only way to get 4 average sun hours per day  this month is if the next 2 weeks brings 8 hrs a day.  If I have a couple days of sun maybe  I can do some testing.Rolls formula says not.. absorb time 80 to 100% 416×0.42÷55 amps=3 hrs 17 mins?
    Blue ridge mts. Renogy 400 watts manual tracking . Epever mppt 30. 2 GC 208 ahr. 300 watt psw inverter. 2 kw genny. Iota 45.
  • mike95490mike95490 Solar Expert Posts: 8,067 ✭✭✭✭✭
    When you talk solar, nobody thinks bad weather !
    Powerfab top of pole PV mount | 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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