diy solar

diy solar

Recent content by Stingy49

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    25ah LiFePO4 Cells For Sale

    Hi All, These are no longer for sale.
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    Magnum Dimensions / Magnum Energy Inverters

    Everything has sold. Feel free to remove or leave up as a price reference.
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    @erik.calco Thanks for the advice! Yeah I don't have the footage for soldering so that opportunity has passed :P. Maybe I'll make a short video explaining some of the techniques. I'm planning on using an epever mppt or something similar. As for remote monitoring, I bet you could use the APC...
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    Hrmm. All the ones of those I'm finding are 40-60 amp max. I need 80 and 100. I think I'm just gonna go with the ones Will lists on his site. They're UL listed. Thanks for the suggestion though. I'll definitely remember those for my solar install.
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    Does anyone have recommendations on good DC breakers? I see the $13 amazon cheapies but I'm concerned about flammability.
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    Aaaaaand Part 4 ft. Physical Upgrades EDIT: Definitely gonna try and stick with shortish videos. So much easier to edit!
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    Posted part 2 (max charge voltage, inverter cutout voltage, etf) and part 3 (quickie about adjusting the cutoff voltage). Thinking of turning this into a mini power-wall to run my office. Thoughts? I got the cells already, just need bms, solar charge cont, solar panels. Also gonna move to a...
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    25ah LiFePO4 Cells For Sale

    Haha I'm definitely open :). If Will ever wants me to run some discharge curves I can do that too. I've gotten the serial port and software working.
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    @Rider I'm really surprised by that. Almost every inverter uses a decent amount of power (20-50Watts) to maintain the 120v output due to core losses (I think). I've seen them where they have a power save mode that applies some smaller voltage to the line to look for draw and that will use about...
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    New Project: Sub $150 1.5kW Pure Sine Inverter

    Hey Everyone, I recently learned about converting pure sine (and modified sine) APC ups's into budget pure sine wave inverters. I decided to make a video series on it to share my findings and progress. The end goal is to mount my 2U UPS into a rolling music case with a much larger battery bank...
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    Bus Bars

    That is a neat product. Don't worry you haven't discouraged me. I'll see what I have easily available locally and go off of that.
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    Bus Bars

    Good points. I'll have to check my baterry's terminal material. I know one set of them are brass inserts and the other are studs of some type. I'll check that they aren't copper coated in something.
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    Bus Bars

    So I've been trying to figure out how to make my own custom size bus bars and while Will's idea about hammering copper tubing is effective I wanted something that looks a little nicer. I came across 1/16" and 1/8" by 1/2" copper strips at onlinemetals.com for reasonable prices. $7.01 and $12.55...
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    Jehu posted these from EVWest. seems too good to be true.

    Looks to be relatively linear. This is from the pdf datasheet on EV West's site. Edit: I just noticed that's at 100% DOD also.
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    DiyBMSv4

    I totally hear you. Actually the major change from v3 to v4 was a comms issue. The i2c communication was struggling so he switched to opto-isolated serial. For me the internet-less web interface and programmable relay controls are a big selling point versus the off the shelf stuff. Same with...
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