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    Home PowerDrive V2 - Germany ** 33+ kWh ** Big Power ++

    Hi Walde, greetings from NRW. That looks like a very nice built. I also started charging my packs from the grid in December as they got too low for my liking. The inverter still draws its 7W and all the PV production is used by the house. So I decided to give them a quick 30 min 500W grid...
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    Wanted: 2x Batrium Longmons

    I am looking to buy 2 Longmons (including at least two and up to 16 connection cables), preferably unused. I'm located in the Germany / BENELUX area.
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    CAN Termination Question, Batrium-Sunny Island

    How does the CAN termination between a BMS (i.e. the Batrium) and a Sunny Island work? I always thought it is necessary to terminate both ends of the CAN network with a 120 Ohm resistor and I know Batrium suggests simply putting one across CAN_L - CAN_H, but what about the Sunny Island. The...
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    Temporary PowerWall setup

    Yeah, you can ionize air with that:D. I basically use a big resistor and electrically switch it in-between the battery and inverterevery timeI start the system. Once it is connected and remains connected you don't have a problem (hence disconnected the secondary relay and connecting the main...
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    Temporary PowerWall setup

    I absolutely believe you. I can't wait for that feeling. Precharge: Pretty much all modern inverters have a large input capacitance to stabilize the DC bus. When you close the circuit between your battery and your inverter (i.e. close the breaker / relay), you are essentially shorting your...
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    Temporary PowerWall setup

    Hi Chris, Thank you. I used 3x 2.5mm2 stranded wire and 1x 2.25mm2 solid wire (for stability) twisted together. I used this combination mainly because that was what I had at the time. It turned out to make solderingonto the busbar a lot easier when compared to just solid copper. The packs hold...
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    Temporary PowerWall setup

    I am moving closer to the final installation and operation of my 14s 160Ah PowerWall. I have built all my packs and capacity tested them individually, I have (partially) charged and discharged the whole wall and now I am doing some more work before the final install. The wall is currently set...
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    PRECHARGE FOR BATRIUM

    I agree. That's why the breaker is not connected to any control logic. The relay sits behind it and is controlled by the BMS. If the breaker were to open, it would have to be reset by hand. Below is the circuit diagram in a hopefully more legibleform.
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    PRECHARGE FOR BATRIUM

    Hi, I have now finished building my 14 160Ah packs. I have already charged them at 3A using an old laptop charger and a boost converter. I have also discharged them at 100W using power resistors. The Batrium also works perfectly to control my main relay. I went with a relay instead of a shunt...
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    Suche einen Elektriker

    Hallo zusammen, ich suche einen Elektriker im Raum Dsseldorf fr die Hilfe bei einem DIY Projekt. Bei Interesse bitte eine PM senden. I am looking for an electrician near Dsseldorf in Germany. If you're interested please send me a PM. Best, MM
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    Mixing Tesla Modules with Laptop Cells

    Thank you for the research, but I have already bought the Sunny Island and my PV system & accessories are also run by SMA so I would like to stick with their products. I could take them apart, but that would be a hassle and a waste of materials. I am planning on connecting each of the modules...
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    Mixing Tesla Modules with Laptop Cells

    I am currentlyin the process of building my Powerwall. I have built 11 out of my 14 80p 160Ah cells (and tested all of them before) and I have all my fuses, relays, connectors, etc. TheSunny Island ready to go and the Batrium is on its way. I am now facing a slight dilemma: My plan was to start...
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    Busbar size

    I will think about that. However, correct me if I am wrong here, but if run in a loop each side of the busbar would be connected to 40 cells and the three strands of AWG 10 of the loop would meet on one side forming a 6 stranded connection to the next pack. Hence, if both busbar sides are...
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    Busbar size

    Thank you. So running three twisted strands of AWG10 /2.5mm wire in a loop be plenty?! Best, MPM
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    Busbar size

    What busbar size would you recommend for a 14s80p system with a maximum current draw of 110A for 30 min and a max. continuous draw of 85A. Running a busbar loop across the standard 4x5 cell holders, ideally each side obviously sees half the max. current. And would you recommend going with...
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    Capacity cutoff vs. SOH cutoff

    Thanks for the info. I noticed that some cells will charge up to about 4.15Vand others would go up to 4.21V and I thought that was an issue with my connections (my cell holders didn't come in yet, so I built some primitive ones myself. Can you elaborate some more? The fuses will take about...
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    Capacity cutoff vs. SOH cutoff

    Hi all, I am currently planning my DIY Powerwall. I am planning to build a 14s140p system using 1.5A cell fuses (the glass ones recommended by AveRage Joe). I will connect the pack to a Sunny Island 6.0H-11 (my existing PV system is all SMA)and incorporate a main 160A fuse. The bus bars will...
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    Batrium BMS Import and Sunny Island Question

    I was referring to the Sunny Island firmware. The support page does not specify which version and firmware of the Sunny Island you need, so I am hoping it will work with the new firmware on the -11 generation.
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    Batrium BMS Import and Sunny Island Question

    That's good to know. How long did it take to ship? I know it works as an external BMS with the -12 generation. I also checked the Firmware update log on the -11 generation: Firmware Release v3.002 3.000 includes a provision for controlling the Sunny Island with an external BMS, I just don't...
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    Batrium BMS Import and Sunny Island Question

    Hello, does anyone know how high the import duties to the United States for the Batrium Starter Kit are (WatchMon4 , 14x LongMon, Shunt)? Furthermore, does anyone know if the WatchMon is compatible with the -11 generation of Sunny Island inverters (i.e. 6.0H-11 / 8.0H-11)? Best, MM
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