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diy solar

Recent content by barbtalon

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    Diesel Heater - False Low Voltage Error E-2

    My 2 kW diesel heater is giving me an E-2 error. The manual says that this is a battery supply voltage error. My heater will not start, and it will not prime either. When I try to either start or prime it, the screen flashes P04V. I'm assuming that this means that the controller thinks that...
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    Solar Panel Wiring Configurations - 2p2s vs. 2s3p vs. 4s

    Cool thanks, I appreciate the help!
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    Solar Panel Wiring Configurations - 2p2s vs. 2s3p vs. 4s

    Yes that mostly makes sense, thanks! I've never thought about panel independence before. But I'm confused how a 1&2 + 3&4 2s2p configuration would not be nerfed. Putting 1&2 in series gives 75.2 V, 5.32A. Putting 3&4 in series gives 37.2 V, 5.38 A. (since 3&4 are half the wattage of 1&2)...
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    Solar Panel Wiring Configurations - 2p2s vs. 2s3p vs. 4s

    Hmmm by 2s2p, do you mean putting 1&3 in series, 2&4 in series, and then paralleling those two sets? I didn't think of that. Yes @Rednecktek you're right, didn't notice that voltage nerfing about config 2. Definitely kills it. So config 3 is similar to a 2s2p, except there are shading issues...
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    Solar Panel Wiring Configurations - 2p2s vs. 2s3p vs. 4s

    I've been going through some different panel configurations for my vanbuild. See the attached drawings of configs 1, 2, & 3. Config 1 - All four panels in series. Produces 112 V, 5.32 A into the charge controller. 0.12% voltage drop. Config 2 - Panels 3 & 4 in series, then 1 + 2 + 3/4 in...
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    Anybody purchased cells from EEL Battery?

    I purchased directly from their website, not alibaba or aliexpress. I'm avoiding those websites. I only purchased from EEL because the link on Will's website convinced me that they must be reputable. I just talked with someone from Solar Supply House over the phone who shed some light on the...
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    Anybody purchased cells from EEL Battery?

    I bought 8 BYD 100 AH cells from them on 1/31. As of 2/9, they still haven't shipped. I specifically bought them as they were listed in US stock and able to ship out at a "maximum of 7 days" after ordering. I've been in touch with Howard via e-mail. He told me their US warehouse is...
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    24V LiFePO4 Schematic Review + Questions

    Also, I haven't decided on the battery bank yet. I calculated my maximum daily power use to be 1800 W in the winter and 3000 W in the summer. I've been looking at the EnerAmp 170 Ah cells (currently sold out). Most cells out there seem to be 100 Ah or 200 Ah and not much in between, but it seems...
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    24V LiFePO4 Schematic Review + Questions

    Hello all, I've mostly finished designing my camper van solar system and would appreciate some feedback. See the attached schematic and legend. This is my first build. Any general feedback over any topic is welcome. I have a few specific questions as well: 1. Will the Epever 20A max...
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    Concerns about powering DC loads in a 24V system

    Here is the 24/12 V converter I'm looking at: https://www.amazon.com/gp/aw/d/B089XZKYCH/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8 And the variable voltage DROK I'll use as the 24/19: https://www.amazon.com/gp/aw/d/B08LPVWX74/ref=sspa_mw_detail_6?ie=UTF8&psc=1
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    Concerns about powering DC loads in a 24V system

    Hi! This is my first post on the forum, looking forward to interacting with y'all. I'm currently designing a 24V LiFePO4 system for my van. It will be my first system. My question in this post is about the design of the DC loads. So from my positive busbar will come my 24V DC line. From this...
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