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    • This poll is designed to generate useful and engaged information from both consumer and installer. With the developing hype of super capacitors, we want to investigate and determine the right conclusion as to where its role is in South Africa presently and potentially in the next 4 years.

      Please take the poll and share so we can all benefit from the results.
      • 0 replies
    • Hello guys, I am a Swiss highschool student and I would like to buy a solar panel 100W, 12v.

      I am very curious about this field and I really would like to use in the future 100% renewable energy.😊<br style="background-color:#fefefe;color:#000000;font-size:15px;"><br style="background-color:#fefefe;color:#000000;font-size:15px;">So I need to go step by step and my first step is to buy a 100W/ 12v solar panel to can charge my laptop and my phone.So this solar panel is enough to charge a laptop right?

      Here are my other questions:
      For a 100W, 12V solar panel, do we need a charge regulator, a 12V battery, as well as a 300W voltage converter, from 12V to 230V (for example), to be able to charge a laptop ?

      If the solar panel produces less than 12V due to little sunlight, does the battery not store anything anymore because it is a 12V battery or can it still store? If it does not store, that would mean in this case, that I should take a battery with a lower voltage such as 6V for example? Can it then store enough energy or is it “full” very quickly?
      In this case, would that mean that the charge regulator and the voltage converter must also be able to accept 6V? How can I mesure the voltage of a battery?

      How long does it take ~ for a 12v battery to be fully full without using it at all?

      <br style="background-color:#fefefe;color:#000000;font-size:15px;">Also, I am not sure I understood everything about the inverter, which kind of inverter should I use for a 100W/ 12v solar panel? (I prefer the inverter than the DC power supply because it seems easier). Can it be like that if I want to charge my laptop? (Sorry it is written in french...)<br style="background-color:#fefefe;color:#000000;font-size:15px;"><br style="background-color:#fefefe;color:#000000;font-size:15px;"><br style="background-color:#fefefe;color:#000000;font-size:15px;">Also, so for the battery I have better to choose a 6v battery for my solar panel like this one?<br style="background-color:#fefefe;color:#000000;font-size:15px;"><br style="background-color:#fefefe;color:#000000;font-size:15px;">Or it isn't a good idea?<br style="background-color:#fefefe;color:#000000;font-size:15px;">( I would like an inverter and a battery cheap but which work quite well even if they are not expensive, if it is possible)
      Last question: How do you link several batteries together?
      These are my main questions and I apologize for bothering you with them.


      Have a nice day!🙂
      • 26 replies
    • I'm new to lithiums after recently replacing my lead acids. I have 2 x 3.5kW Pylontechs.

      I'm looking for the sweet spot where I will get good battery life as well as maximum utilisation of the bank at night. I do understand the technology is new so there's no real data out there.

      Currently I'm drawing down to 25% before switching to grid, but the Axpert powers itself from the batteries so this causes a further slow drop of a few %. Never goes below 20% which is my personal comfort zone limit. I'll likely modify this strategy for load shedding to leave a little more in should I need to go back to battery at 4am.

      What's the feeling on this? Am I cycling too deep, or not maximising ROI?
      • 19 replies
    • I am new here, been building up my system for some time now.

      Started with the following a bit more than a year ago purely for loadshedding backup. System started as follows:

      1. Axpert 5KVA (Mecer)
      2. 4 x Vision 200ah AGM's

      After a year I started having problems with the batteries and decided to upgrade to Pylontech and also at the same time bit the bullet and ordered the panels to start producing own power. Connecting the Pylontech's to the Axpert I realized that communication between batteries and inverter was not going to work, so also ordered the Raspberry PI with ICC software

      System currently as follows:

      1. Axpert 5KVA (Mecer)
      2. 2 x Pylontech US3000
      3. 6 x Canadian Solar 365W Poly KuMax
      4. Raspberry PI with ICC software

      Will be adding two more Pylontech US3000's (for total battery backup of 14 Kwh) as well as 6 more 365W panels in the next month or two

      I will probably be asking a lot of questions as I have been lurking these forums as a guest for a long time looking for answers to all of life's power questions

      Attached a few photos of my setup
      • 12 replies
    • Hi Guys. My new installation. 24 x 390w JA Mono solar panels with an 8kw Sunsynk inverter and 2 x 5kwh Bull Lithium batteries.  More pics to follow soon...
      • 55 replies
  1. Renewable Energy

    1. Pay It Forward

      The Pay It Forward section is built on the goodwill of the Powerforum members. Come in and see where you can help out with components and assistance.

    2. Beat Load Shedding

      Battery backup systems . Basic  Systems to keep essential services running during power outages

    3. Starting In Solar? Feel free to introduce yourself

      Starting in Solar? New Comers Feel Free to Ask- There is no such thing as a silly question.

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      General discussion & Latest renewable energy news

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    16. Sustainable Landscaping

      A sustainable landscape is a stable and productive ecosystem that conserves the physical and biological processes occurring on that landscape. Designed and managed sustainable landscapes maintain hydrological function, plant and animal diversity and biomass, soil integrity, and contribute to human wellness. Utilizing nature and landscape to promote energy efficiency and energy saving.

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      Saving energy, energy saving appliances & tips

    18. Electric Vehicles

      An electric car is an automobile that is propelled by one or more electric motors, using electrical energy stored in rechargeable batteries or another energy storage device

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      Some well-known alternative fuels include biodiesel, bioalcohol (methanol, ethanol, butanol), chemically stored electricity (fuel cells), hydrogen, non-fossil methane, non-fossil natural gas, vegetable oil, propane, and other biomass sources.

    20. The Internet of Things

      The Internet of Things (IoT) is the network of physical objects—devices,other items embedded with electronics, software, sensors, and network connectivity, that enables these objects to collect and exchange data. Such as : Raspberry Pi, Arduino

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      Principles of Electricity, Theory , Calculations

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      Hypes, Scams, Rants, Unproven Tech, Does it really work?

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      Commercial Suppliers Please make use of the Commercial Supplier Section

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      Post job opportunities here, or upload a copy of your CV if you are seeking employment in the renewable energy sector.

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      Suppliers to sell goods on the forum as part of a business. Companies, Sole proprietors and anyone who wishes to advertise products for commercial purposes are most welcome. Apply Here

    32. Social Responsibility

      The obligation of an organization's management towards the welfare and interests of the society in which it operates.

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      Off topic discussion, World News, politics & Current Affairs - It is optional to Join this club if it is of interest.

    34. Forum Suggestions & Support

      Suggestions & ideas are always welcome to improve Power Forum

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