diy solar

diy solar

Recent content by Archetype-IS

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    Class T fuse and breaker?

    Do you need both DC Circuit Breaker and T-Fuse? From the Mangum manual (below), it sounds like you can get away with the DC Breaker with Overcurrent protection device. Could someone confirm? T-Fuse are hard to find these days. " For safety and to comply with electrical code regulations, you...
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    Grid tied micro inverters adding a battery

    Sol-ark could do AC Coupling. Might be able to do batteryless too. Haven't read the new manual. Magnum PAE series - not as fancy as the newer hybrid but it could do the job.
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    Solar panels for milk crate build.

    Any 100 to 200 watts panels are plenty to charge the 50ah battery if you have 4 to 5 hours of daily sun. More watts charge faster.
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    12/3000 multiplus II and 8 x 280EVE. What BMS?

    I would said go with the two of the 150A BMS' from JBD/Overkills style. One BMS for each 4S batteries and parallels them for redundancy.
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    Any one seen Michael Caro?

    You should direct message him. or do the @Michael B Caro to get his attention. I had ordered the first batch from Michael last year. . He seems to be still active in the forums.
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    Battery Backup System

    The all-in-one unit like the GroWatts is simple... (it has UPS mode like how you wanted. It has charger from AC or Solar. Or use Solar energy first or Street power..etc.) 1. Energy audit on how much power the reef tank uses - like a Kill-A-Watt meter 2. Size the battery from the energy audit on...
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    Top Balance voltage drops

    I do have a shunt for monitor. Hope to see 280ah on full discharge/disconnect by BMS or inverter. We will find out in a few days. Thanks.
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    Top Balance voltage drops

    Hooked up the inverter to test. The started voltage at 14.1v and quickly dropped to 13.3v. It that how it behavior? Cell 1. 3.337 2. 3.335 3. 3.334 4. 3.336 Different of 0.003v. I guess they do need to discharge that top voltages fast. Doing a slow 8amp discharge test.
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    Does anyone know the "Cycle capacity" parameter value for the EVE 280AH battery in the XiaoXiang BMS app? Thanks.

    Please disregard my question. Found the info in "Overkill Solar BMS manual" " 3.2.2 Cycle Capacity This parameter is used to calculate state of charge. In the real world, batteries do not meet the designed capacity printed on the cells. It can be higher, if the cell was underrated, or it can...
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    Top Balance voltage drops

    Finally finished hookup the 4S 12V 280AH EVE batteries. I see the voltage dropped: 1. 3.526 2. 3.509 3. 3.518 4. 3.523 Voltage diff: 0.017v according to the XiaoXiang BMS app. Cell #2 seems to be discharge faster from the first Top balanced of 3.61v. Thanks.
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    Top Balance voltage drops

    I top balanced the 4 EVE 280ah cells to 3.61vs and let it parallel for 3 days. Day 1 at 3.61, Day 2 at 3.571, Day 3 at 3.541v. Will it continue to drop to 3.5v or 3.4v? I plan to put the BMS on and let it be. All cells measured exactly the same or maybe off by 0.001v or so. I guess LiFePo4...
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    Two x 24v battery banks and one charge controller....

    Hi, I have a question about one charge controller to charge two 24v battery banks with BMS. Do I hook both battery banks to the command bus bars (positive and negative) and then the one charge controller to it? What if the one bank finished early and the other bank still taking charge? or...
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    Battery monitor lug size?

    Hi, I am trying to locate the spec of this popular battery monitor shunt terminal lug size. I haven't purchase it yet because I am in the planning stage. I searched the web, web videos, manuals, read comments, none state which size lug to use. If someone has it and could share the terminal...
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    Parallel 1/0 awg or 0 awg to max the amperage

    Plan to max 167amp for a 24v @ 4000w system. (maybe max 200amp?) The manual recommend 4/0 awg wires for the DC battery bank and over current device protections. Also plan to use two BMSs for two 24v 8 cells banks (2P8S). I only have one BMS 24v 100amp so far due to the shortage. So, I plan...
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    Parallel 1/0 awg or 0 awg to max the amperage

    I want to see if I could combine (2) 1/0 awg wires in parallel and not using 4/0 wires. The reason is I have plenty of 1/0 awg copper wires and want to avoid buying 4/0 awg wires. I plan to use it in the 24v system with the EVE 280 batteries. I see the 1/0 awg could handle it if you look at...
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