diy solar

diy solar

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  • Post in thread: Sun Worshippers, Meet the Tree Huggers !

    Plants can generate electricity Researchers have discovered that living plants are literally 'green' power source: they can generate, by a single leaf, more than 150 Volts, enough to simultaneously power 100 LED light bulbs. Researchers also showed that an 'hybrid tree' made of natural and...
  • Post in thread: Overkill BMS defaults?

    I figured it out. It was a driver issue.
  • Post in thread: SAMLEX PST-600-24 DC-AC INVERTER PURE SINE WAVE 24VDC IN 120VAC OUT 600 WATT...

    It's just a phase...
  • Post in thread: Do I need an Active balancer for two 12.8v 100ah in series?

    My bad!
  • Post in thread: Cardboard Busbars !!!

    In the process of cutting my own heavy copper busbars customized for a 8S 24v 100ah build I came up with a template for drilling and cutting them from flat bar copper. The real moment of truth is when you are about to install the bus bars in series after the parallel top balancing. This is when...
  • Post in thread: Can a SAMLEX PST-600-24 INVERTER run a minifridge?

    Well, now that I’ve received it, I’ve attached a two amp Anderson connector to both it and the power pack of my wheelchair, just for giggles! I plugged it in to my angle grinder and gave it a whirl. Now I’m wondering when I’m ever going to need an angle grinder during a blackout. But atleast...
  • Post in thread: Do I need an Active balancer for two 12.8v 100ah in series?

    Thank you. But, not possible to find a suitable single battery because of size constraints. They are all too long in length (13" or more).
  • Post in thread: Where to source connectors and parts

    I am building a 8S 12v/100AH pack for a power wheelchair. I will use a DALY LiFePo4 8S 24V 100A BMS (common port - whatever that means) with it, connected with some kind of fuse protection, preferably a breaker switch. I have been following "DIY Solar Power with Will Prowse" YouTube videos...
  • Post in thread: DIY BUSBARS

    I just made a couple of sets of copper busbars from solid flat mill Bus Bar Stock that I found on ebay for about $12 each per 14" long bar. That is long enough to carve out about 8 bus bars. Aluminum bar stock works too, but it only it has 61% conductivity compared to copper. (The bar stock I...
  • Post in thread: Passive Top Balancing ? How/Why does it work ?

    That I understand. But that doesn't address my question. Can battery cells set up in parallel, sitting idle without anything connecting to the main terminals (e.g. "Rail") balance into a common SoC. If so, by what process. I don't think so. I think some others do though. Please explain.
  • Post in thread: SAMLEX PST-600-24 DC-AC INVERTER PURE SINE WAVE 24VDC IN 120VAC OUT 600 WATT...

    No dilemma. Will talks of being homeless living out of van. Me, I was homeless too once, living in the cabin of my 26' fixerup sailboat throughout one Virginia Beach winter. My point being, We have sure come a long way from that. I have discovered the joy of Poverty, having lost everything...
  • Post in thread: Overkill BMS question about over current load

    Good Stuff! ...and I agree with you about the miscalculation of estimated running amps. According to the Owner's manual the original batteries are a pair of Group 27 12v 105A Gel batteries. Being SLA their voltage range is a wide swing from about 11.5 to about 14.v I think. Twice would be in...
  • Post in thread: Overkill BMS question about over current load

    I love the "Insurance holder" name for the fuse holder in this diagram! "Isn't that just Precious!"
  • Post in thread: Passive Top Balancing ? How/Why does it work ?

    I am not talking about a BMS and how it passively balances. I am talking about the case of two cells, one fully charged (Cell A) , the other in a discharged state (Cell B). Assume both battery cells are healthy. Check voltages with an accurate VOM, like a Fluke meter. Then set them up in...
  • Post in thread: DIY BUSBARS

    It's nice to have the right tools! I was able to make do with what I had. If I could have taken it somewhere to have it done inexpensively I would have. These days that probably will never happen though. So, a hand drill, hand jigsaw, a strong table, big clamp, a piece of scrap 2x4 and some...
  • Post in thread: Overkill BMS question about over current load

    But isn't that charge voltage limit already a programmable parameter of the (Overkill) BMS anyway? I hadn't heard of Arduino before. I Googled it: People also ask: What is the Arduino used for? Arduino is an open-source electronics platform based on easy-to-use hardware and software. Arduino...
  • Post in thread: Do I need an Active balancer for two 12.8v 100ah in series?

    Thank you. I hear you and appreciate your point about selective listening. A lot of that goes on in Congress lately. Nobody gets anywhere like that. I keep it topped up and have never run at low SOC. Never below 40% while out and about, keeping an eye on my ammeter constantly.
  • Post in thread: Do I need an Active balancer for two 12.8v 100ah in series?

    👍 👍👍Thank you! 👍👍👍
  • Post in thread: Overkill BMS question about over current load

    It would be best to let the BMS handle all connections in/out of the battery pack, safety wise. I like the concept though as perhaps a solution to a problem I haven't encountered yet. Thanks!
  • Post in thread: Passive Top Balancing ? How/Why does it work ?

    Thank you. I appreciate your effort to explain it to me. However, everyone seems to be missing the point. I am being treated like a small child asking how immaculate conception works. You can carefully and politely explain how human reproduction works until you are blue in the face but I will...
  • Post in thread: Overkill BMS question about over current load

    I am sort of taking it on faith that it is specifically a 8S 29.2v wheelchair charger. It sounds perfect... I hope it is, anyway. If the ammeter is accurate enough I should be able to unplug it at whatever point I like to charge it to 80% or whatnot. We will see. As a layman I don't know if...
  • Post in thread: Hurricane Season Preparation

    Wow! Now we are getting somewhere! Paired with a single good used full size 100ah 12v panel, this might fit the bill. I probably wouldn't mount the charge controller on the wheelchair though. I would be more inclines to store the panel inside, then deploy it, attaching the controller to...
  • Post in thread: Renogy DC-DC charger with MPPT

    That is so cool! Sounds like I did good! It sounds sort of like a high frequency inverter works, no? I have some studying to do on all of this now, to try to better understand all of this and cut through some cobwebs.... Watts/Volts = Amps... Amps x Volts =Watts ... Sticking with a simple...
  • Post in thread: SAMLEX PST-600-24 DC-AC INVERTER PURE SINE WAVE 24VDC IN 120VAC OUT 600 WATT...

    Or don't look down the barrel of your .loaded .45 side arm when it jams... I once caught myself doing just that with my Colt 1911, carried away in my confusion at the pistol range. Thank god for the grip safety. I was staring down the barrel, pulling hard on the trigger, trying to clear the...
  • Post in thread: A faster & better way to top balance?

    Seems a bit extreme - just to make rechargeable batteries for my electric wheelchair... Anyway, this thread seems to have gone all the way to Cuba and back. End of Hijack. :cool: Thanks guys.
  • Post in thread: Can a SAMLEX PST-600-24 INVERTER run a minifridge?

    I found a used Samlex 1500w 24v inverter, mislisted as the 12v model, for $200. I just grabbed that one too.
  • Post in thread: Overkill BMS question about over current load

    I have watched countless videos of balancing the way you do, and also read about doing it cell by cell which is more trouble to do. I figure I will test each cell with my Fluke VOM and individually charge the cells to 80% with the HP power supply, then parallel balance like you, let it sit...
  • Post in thread: A MUST SEE YouTube: "Off The Grid: Installing the Best New Lithium Batteries!"

    I am not affiliated with the author. I am new. Maybe this is old news. I just stumbled across this on YouTube which should probably be of interest to many of us here. This is a wonderfully instructional video about a serious off grid DYI Solar Power installation on a farm. I learned stuff...
  • Post in thread: Renogy DC-DC charger with MPPT

    So what is the minimum Victron SmartSolar model that I can use? 75/15, 100/15, or 100/30? Well, I decided to go with this one. I probably can't go wrong it... Right? Or, for less value @ Amazon, but why would I ?:
  • Post in thread: Hurricane Season Preparation

    Hmmm... So are these "bifacial" panels ? And if so, what if you were to slide a glass wall mirror under them, or at them? Can mirrors be used with solar panels with any effect?
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