Panel input adequate for 10%+ rate of charge?

Skipmca
Skipmca Registered Users Posts: 18 ✭✭
edited August 23 in Off Grid Solar & Battery Systems #1
I currently have a too large battery bank and sulfated batteries.  I am purchasing new batteries and would appreciate an evaluation of my proposed configuration.  Except for the batteries, all components are in place.

24 volt system

- Schneider Electric 3500 watt Inverter/Charger

- Proposed battery bank: 2 strings, each with 4 6-volt Rolls flooded 390AH @ 20 hours

- 6 Solar World Sunmodule SW 320 XL mono panels
In parallel
Max power 320w
Vmp 36.7
Imp 8.78
Into Outback FM 60 charge controller

- 6 LongiSolar LR6-72PH 370 Watt
In parallel
Max power 370w
Vmp 39.4
Imp 9.39
Into Outback FM 80 charge controller

Arrays are in South Park Colorado 65 miles East of Colorado Springs 
Off-grid / No shadowing

Load:
600 Watts * 12 hours per day
120 Watts * 12 hours per night
Total = 8,640 WH per day 

Generator:
Westinghouse iGen4500DFc Digital Inverter

Please advise if additional information is required.

Thanks,
Skip
SkipMcA
South Park, Colorado
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Comments

  • Dave Angelini
    Dave Angelini Solar Expert Posts: 6,870 ✭✭✭✭✭✭
    #2
    Are you full time now or is this new to you ?
    "we go where power lines don't" Sierra Nevada mountain area
       htps://offgridsolar1.com/
    E-mail offgridsolar@sti.net

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  • Skipmca
    Skipmca Registered Users Posts: 18 ✭✭
    #3
    Been full-time with my current setup for 5 years.
    SkipMcA
    South Park, Colorado
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  • chrisgraham
    chrisgraham Registered Users, Users Awaiting Email Confirmation Posts: 7 ✭✭
    #4
    Did u install all of these yourself？
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  • Skipmca
    Skipmca Registered Users Posts: 18 ✭✭
    #5
    Yes.
    SkipMcA
    South Park, Colorado
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  • JRHill
    JRHill Registered Users Posts: 336 ✭✭✭
    #6
    What consideration did you give to the equivalent amp-hours with good quality 24vdc LifeP04 blocks?
    Off Grid. Two systems: 1) 2925w panels, OB VFXR3648, FM80, FNDC, Victron BMV-712, Mate3s, 240 xformer, four SimpliPHI 3.8; 2) 780w, Morningstar 30a, Grundfos switch, controller and AC/DC pump, 8 T105. Honda EU7000is w/AGS. Champion 3100. HF 4550, Miller Bobcat.
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  • Skipmca
    Skipmca Registered Users Posts: 18 ✭✭
    #7
    I did some research on Lithium batteries, but decided to stick with flooded. It appeared that cost for equivalent is much higher with Lithium.
    SkipMcA
    South Park, Colorado
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  • littleharbor2
    littleharbor2 Solar Expert Posts: 2,094 ✭✭✭✭✭
    #8
    I've been building DIY LFP batteries foe LESS than Flooded Lead Acid. The latest one I'm building will cost less than $1500.00 for 14.4 kw. (16 280 ah. cells and BMS) 11 6 volt golf cart batteries have about the same amount of power but you can only use half of that power on a daily basis. So, about 20 golf cart batteries for comparison.

    2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old  but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric,  460 Ah. 24 volt LiFePo4 battery bank. Plenty of Baja Sea of Cortez sunshine.

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  • Skipmca
    Skipmca Registered Users Posts: 18 ✭✭
    #9
    To clarify my post: I really just need verification that my panel input will provide enough charge to maintain an adequate SOC for the Amp Hours of the the proposed batteries. Thank you for any assistance you can provide. Skip
    SkipMcA
    South Park, Colorado
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  • JRHill
    JRHill Registered Users Posts: 336 ✭✭✭
    #10
    Skipmca said:
    Thank you for any assistance you can provide. Skip
    Here's your answer:
    https://www.solar-electric.com/lib/wind-sun/Rolls_S6_L16.pdf
    Off Grid. Two systems: 1) 2925w panels, OB VFXR3648, FM80, FNDC, Victron BMV-712, Mate3s, 240 xformer, four SimpliPHI 3.8; 2) 780w, Morningstar 30a, Grundfos switch, controller and AC/DC pump, 8 T105. Honda EU7000is w/AGS. Champion 3100. HF 4550, Miller Bobcat.
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