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    Battery-to-Battery 12v-to-12v battery charger - Aliexpress

    Anyone have any experience with one of these? https://www.aliexpress.com/item/1005001419781371.html Sterling is way too expensive. Renogy is better. But I just wrestle with paying $230-250 for a device that really only exists to keep my soon-to-be lithium battery bank from sucking current too...
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    Newpowa vs Nature Power - low cost panels

    Hello panel peeps, Home Depot is running a one day sale on Nature Power 215W mono 12v panels for $154 ($0.72 / watt) Had been looking at Newpowa 210W mono 24v panels for $224 a piece and for Labor day they are dropping another $20 off (actually $60 off $500 order) so that puts them at $0.97 /...
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    6 panels vs 3panels - same wattage

    I may have made my first post too complicated so I'm going to post just one question. I would like to put 600W+ on my RV roof. Ive looked at HQST 100W compacts and Newpowa 210W (12 or 24V) panels. Is there any advantage/disadvantage to 3 vs 6 panels? Right now - they are both basically...
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    RV - rooftop solar - system design - power contraints

    Hello all, The P.O.S. Zamp/Sunpower flex panels on my motorhome (2018 Winnebago View 24V) died. I'm getting a sub-optimum warranty replacement from ZAMP of two 90w rigids. So - I am going to take the opportunity to just upgrade. Current system: 1) ZAMP 30A controller 2) Progressive 30A...
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