24v battery setup and charging options for off grid setup

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georget
georget Registered Users Posts: 2 ✭
in Off Grid Solar & Battery Systems #1
Hi guys
I'm looking to build a 24v battery pack to run my inverter.
I have purchased 4PCS 3.2v 200Ah LiFePO4 Rechargeable CALB SE200AH Li-Ion phosphate solar battery 
I was thinking of pairing them with 3 banks of 150 x 18650 , 4.2v per bank which will give me total 12.6v
I'm will be running a MPPT Off-Grid Pure Sine Wave Solar Inverter with 3000VA
Also have 3 strings of 3 x 190w solar panels 
I will use a Victron Energy Battery Protect 12/24V-100A on the system.
 Any thoughts would be appreciated.

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  • mcgivor
    mcgivor Solar Expert Posts: 3,854 ✭✭✭✭✭✭
    #2
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    Welcome to the forum @georget

    Frankenstein, are you  planning to create a monster?  Seriously bad idea if what's being proposed is to series connecting different lithium  sub chemistries of different capacity,, things could go wrong in a heartbeat resulting in fire, injury or even death,forget this idea.

    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery with Battery Bodyguard BMS 
    Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.  
    5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
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  • georget
    georget Registered Users Posts: 2 ✭
    #3
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    Thanks for the advice 
    Much appreciated 
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