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    Panel tilt near the equator

    I'm setting up a small system for my son's house which will have two 300 watt panels. A friend is saying they need to be at an 11º angle equal to our distance north of the equator. Thew house sits facing south southeast and the sun rises from behind the left rear corner of the house in summer...
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    Solar systems for families with no knowledge

    I am in Nicaragua, preparing to build a small house powered by a Delta 2, a battery charging it, and panels. I also built a house for a very poor family and preparing another house for another poor family. The problem is the local utility has a one year wait for new electric service. I want to...
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    New battery from Amy Wan at Shenzhen Luyuan on Alibaba

    My new battery is on the way. In 2020 I asked Amy if she could have a battery built and shipped to me as there are very few resources where I live in Nicaragua to build my own. She had a 48v 10KW battery split into two 80lb cases for ease of movement with all test results of the cells for $1800...
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    Ecoflow Delta 2 + 24v 105AH battery

    Last month I ordered a custom build 24V 105AH battery from Amy Wan for a new cabin, but looking at inverter choices nothing looked quite right. $300 all-in-ones seem like people are buying two, one for a backup doesn't inspire confidence and 50w consumption, WZRELB etc inverters seem better...
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    For $500 and 3KW, better components or all-in-one?

    I have a 24V 105AH battery on the way from Amy Wan and now need to shop for inverters. In a setup 3 years ago I had a Growatt but issues with solar charging during the day shutting down, affecting battery capacity for the night made me wonder if the convenience is worth it. The alternative is a...
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    Building a small off grid home, will be vacant for long periods.

    I had a 48V 10KW system in a big house, now all gone for a simple life. I'm preparing to build a 200 sq ft house with a loft but will travel for sometimes 12 months at a time. For simplicity I thought of a Delta 2 Max to run a 1500w espresso machine for an hour a day, though the 1500w is for...
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    Will a high discharge rate for 10 minutes damage a gel battery?

    I plan to build a small house in a remote area where importing LFP or a generator like a Delta Pro isn't an option. I can get gel for a somewhat reasonable price though. My power needs are small except for an espresso machine that requires 10-15 minutes at 11-1600w. With 4 gel 12v100ah at giving...
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    Long term gel battery storage in the tropics

    I presently live in Nicaragua but now plan to live around India 10 months a year, 5 months per visit to comply with visa requirements and in Nicaragua 1 month or so at a time. I have massively downsizing my life to a carryon suitcase, eliminating everything that isn't necessary and now living...
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    Simple inverter for resistive load

    I'm not exactly a beginner but this area is new to me. I am now traveling 10 months a year and will be home in Nicaragua for 2 one month visits per year. I had a 10KW LFP system in my waytoodamnbig house, now sold, and building a very small dwelling of 12 square meters. The lights and various...
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    Rewiring the house to only use the grid for emergency backup

    I have an old brick house in Central America with typical nasty wiring. I considered simply running a parallel system for the solar but would rather rip out the old and start fresh. I'd like it to go through the same panel but use breakers to isolate one from the other. I'm thinking something...
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    A question about a JBD BMS 16s 150a

    I ordered a 48v 10kwh battery, 16 CATL 202ah from Amy at Shenzhen Luyuan in January which shipped in a timely manner but took another 6 months to arrive in Nicaragua. I am pretty excited at my first excursion into solar. It’s split into two parts so this old man can move 160lb of battery so I...
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    Balancing a new premade battery

    I'm waiting for the imminent arrival of my battery and Growatt all in one inverter after many long months. I travel soon for about two weeks. Amy said they were balanced before they were shipped in February. If everything is connected to the panel array, but not to the house, will the BMS get...
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    Ventilated cabinet for the new house system

    My components are finally arriving after a four month wait and have to ready the house. I’m in Central America and plan to install the system outside in a covered porch. The temperature never gets above 90f or below 72f, humidity about 60%. I want to control the dust- there is very little but...
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    Renology 100ah 12v $325??

    Drinking espresso and browsing online I see this ad- I've seen threads about Renology's problems and continued existence, are they now liquidating? LITHIUM IRON PHOSPHATE BATTERIES AVAILABLE: ALL BRAND NEW IN SEALED PACKAGING. LIMITED QUANTITIES AVAILABLE RBT100LFP12S -12V 100AH - 325.00 PER...
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    Charge Lifepo4 using MPPT SCC and a car battery charger?

    I bought two 12v 50ah Lifepo4 batteries and a 30a MPPT a year ago for a project that never happened. They have sat, forgotten, until now. I checked the voltage and one at 13.2v and the other at 12.9v. Can I use the MPPT to charge the batteries from the cheap dumb charger? There are no smart or...
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    My dream battery for sale, 48v 200ah by Amy at Shenzhen Luyuan

    The house I'm living in has rapidly turned into a money pit and I can no longer justify the expense of constant repairs so I am building new. Loans are almost unheard of here and I'm selling my truck, car, some other toys and saving half my Social Security per month to have a house in a year...
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    Two Growatt 3k inverters, one just for backup

    I will get a pair of Growatt 3k inverters soon. I plan to use one all the time, the second for occasional bigger loads and as a backup. Can the second just be switched on and off as needed or is there a process I should follow that won't put strain on them? They're not the best, I know, but they...
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    Good fan replacements for Growatt 3K

    Everything is coming together for a system I'm purchasing in the US and shipping to Central America. I plan on getting 2 Growatt 3K inverters and note people saying how loud the fans are, which sounds like cheap, inefficient fans but just guessing. Has anyone replaced the originals with quieter...
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    State of Charge Readings

    I'm in the final stages of planning my first system thanks to the good info I've received here. My batteries are being assembled at Shenzhen Luyuan and shipped off within days which gives me time to get everything else sourced and delivered. So now I'm planning my life with solar and one thing...
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    Searching for the unicorn: affordable 48v 3000w 120v inverter

    The last several days looking for an inverter to fit my needs has been an exercise in frustration. I'm looking for an inverter, off grid but any style is OK that is PSW 48v and 3-4000w for under $1200. I know about Outback and Magnum but perfection comes at too dear a price for me right now...
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    Preconfigured battery bank from Amy at Shenzhen Luyuan

    After months of obsessing and bugging members here about the perfect lifepo4 battery I chatted with Amy about two 24v 200ah in series for a 48v system. The website showed only cells but she was quick to reply with photos and more questions than I could answer. She had photos which look similar...
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    External BMS recommended for LFP 12v or 24v batteries in series?

    I am within 2 months of ordering what I need for a whole house system using max 5kwh per day. I have received a lot of good advice so far and because of the lack of hardware and reasonable shipping I'm going for preassembled batteries either through Xuba or through Amy at Shenzhen Luyuan. Before...
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    Considering two inverters for mixed use

    I’m slowly putting together a system to take my house off grid. The grid here is unreliable with many interruptions and low voltage and it’s time to use it only for emergencies. I will have 48v 200ah to keep me independent for several days yet while I can get sun I want to roast coffee and drink...
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    I Want To Be a Beginner Battery Builder

    I will soon order materials for a whole house solar system. I’ll buy and ship to Nicaragua panels, inverter etc in the next few months. I plan on prebuilt batteries for a 5kw system because of the lack of materials- fasteners etc that can involve days of travel and endless scrounging to round up...
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