Leave charging / floating or cut off for no use and high heat

tr0y
tr0y Solar Expert Posts: 99 ✭✭✭
in Caravan, Recreational Vehicle, and Marine Power Systems #1
I have an RV system I have posted here about a bit and had a question on storage / non use and high heat and what that may do to batteries. 
I have 3 12v 200Ah AGMs in the hold in the RV. I have to go away for about 10 days on a business trip and we are going to be in a heatwave daily temps are expected to exceed 110f. 

I have no power requirements in the RV while I am gone and I can completely shut down any drains of power. 

My question is should I just shut the system down ? Batteries are full and floating at the moment, thoughts ? 

Thanks 
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Comments

  • mcgivor
    mcgivor Solar Expert Posts: 3,854 ✭✭✭✭✭✭
    edited July 2018 #2
    Strange things can occur when unattended, 10 days is not long, my vote is shut down for peace of mind.
    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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  • Estragon
    Estragon Registered Users Posts: 4,496 ✭✭✭✭✭
    #3
    AGMs tend to have low self-discharge rates, so I'd agree shutting down is the better choice.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
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  • tr0y
    tr0y Solar Expert Posts: 99 ✭✭✭
    #4
    Thanks guys ! Shutting down now
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