User Panel
[#1]
Nice description.
I wanted to see what you were talking about. PhotobucketFail. 1/10 |
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[#3]
I put 100,000 lumens of 4' LED shop lights in my new shop when I did the electrical. It's VERY bright. And the LED fixtures were easier and cheaper than hanging FL tubes. I haven't actually verified their efficiency but I suspect the numbers on the box are a bit inflated, they were super-cheap discount lights ($15 X 28 lights = $420 for 100k lumens).
I over-did the lighting because I know cheap LEDs are likely to lose brightness over time. In 15 years when these start to get dim enough that I need more I'm sure we'll be using some amazing new technology that is more than 10 times as efficient and I'll be happy to upgrade. |
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[#4]
Quoted:
I put 100,000 lumens of 4' LED shop lights in my new shop when I did the electrical. It's VERY bright. And the LED fixtures were easier and cheaper than hanging FL tubes. I haven't actually verified their efficiency but I suspect the numbers on the box are a bit inflated, they were super-cheap discount lights ($15 X 28 lights = $420 for 100k lumens). I over-did the lighting because I know cheap LEDs are likely to lose brightness over time. In 15 years when these start to get dim enough that I need more I'm sure we'll be using some amazing new technology that is more than 10 times as efficient and I'll be happy to upgrade. View Quote |
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[#5]
Looks like the Trojan forklift battery will get a reprieve.
I'll likely analyze this in more detail in the solar thread, ---the battery after 15 hours with a 15 amp load [15 amp discharge rate] has delivered 225 ampere hours ---and the test is ongoing. It's spec'd at 750 [6 hour rate] amp-hrs at a specific gravity of 1.285 ---to a FULL discharge [per forklift battery mfgrs] So say half that to a normal working discharge on occasion, is 375 a-h when new. This battery is ~26 years old, so having delivered 225 A-H over-night and the test is still ongoing, is impressive. This battery due to horrible corrosion of the positive plates and the connecting straps at the top of the cells, I've taken apart to study, has very little ability to deliver high currents, over ~40 amps. Normally it could put out 100 amps effortlessly. This said, in our application in the winter when it's cloudy and not much solar to charge the various battery banks in the barn, this battery seems to be able to be counted on to augment the others. During these low sun times, I usually [remotely] shut stuff of so the total drain on the batteries is about 12 to 15 amps, and that's to operate a repeater, network stuff, cameras, alarms, a couple very small LED lights, control system. All these things don't take much. It's cold enough in the barn that the two freezers run very little. So this battery stretches worst case bad sun days another day at least. This test will continue until the Xantrex Inverter shuts itself down due to low battery voltage. The inverter will start beeping at 10.5 vdc and shut down at 10 vdc. Solar thread here... https://www.ar15.com/forums/outdoors/FORKLIFT-BATTERY-EXPERIMENT---4-HP-diesel-engine--Leece-Nevi12-volt-alter--charging-battery-bank/17-677485/&page=3&anc=bottom#bottom |
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[#6]
T +20 and the battery is at 11.7 volts and 300 AH have been supplied at a 50 hour rate.
750AH capacity/15A=50Hour Rate of Discharge I'll compare this to the original batteries in the next post. |
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[#7]
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[#9]
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[#13]
Can you post some links to the lights you're using? I know you said ebay for some.
I'm building out a 12v (dual car battery) system for my daughter's tree house, which will have LED lighting and a few cigarette lighter ports for phone charging and such. |
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[#14]
Quoted:
Can you post some links to the lights you're using? I know you said ebay for some. I'm building out a 12v (dual car battery) system for my daughter's tree house, which will have LED lighting and a few cigarette lighter ports for phone charging and such. View Quote This is an amazon picture but Target/WalMart/Box Stores are way cheaper These are 100 watt and very bright, other models are less wattage and might be more suitable for a tree house. There are various color temperatires. This 'lightstick' style, is a fairly new model and may have the best technology inside. I took one apart last week by compressing the plastic cover in a vise until it cracked then pulled it out. The cover has plastic retaining tabs around the bottom and once you figure out where they are, the vice might be necessary, I'll have a look later. The frosted plastic diffuser attenuates a lot of light. There's a disk of LED's inside that's very bright and acts as a 'point source' and might be used like those big styled columns in computer rooms with powerful white halogen lamps above head level that bounce light off white ceiling tiles for nice overall illumination with no shadows. The term slips my mind at the moment I think the word starts with a T Of course any of the recent lamps are good, but require an 120 vac inverter so your battery supply will be inefficient. So- There are LED 12 vdc track lights in all the box stores with the M16 base and skinny pins. [The track light bulbs that the big stepped pins are for lamps for 120vac.] Something like these would be great for a tree house and easy to install, tracks and lamp holders are lowest $ on eBay. There's a selection of flood and spot and various color temperatures. Here's your answer--- Found this --12 volt strip light... Might be perfect, US Seller, there are tons of LED lights on eBay Cool white -this model, ~$7 Free shipping AMAZING! http://www.ebay.com/itm/12V-72-LED-Tube-Rigid-Bar-SMD-5630-Strip-Light-Cool-White-with-Transparent-Cover-/380808236105?hash=item58a9f08c49:g:0xYAAOSwJkJWlb9p Specs- Specifications: 1. Key Features: LED Light 2. Light Source: 72 LED 3.LED Size: SMD 5630 4. Luminous Flux: 1800LM 5. Output Power: 18W 6. Voltage: 12V 7. Light Color: White 8. Color Temperature: 6000K 9. Lifespan: 30000-50000hours 10. Material: PC+Aluminum 11. Dimensions: 100 x 1.8 x 1.5cm/39.37 x 0.71 x 0.59inch(L x W x H).) 12. Weight: 6.7oz / 190g **************** I sometimes expediently solder bulk cheap 16 ga extension cord wire directly to the lamp pins and put a sleeve of tight fitting tubing over each pin to insulate... If lights are 120vac I leave the plug on. |
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[#18]
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[#19]
There's all sort of very inexpensive higher powered LED outdoor lighting with larger integrated solar panels and PIR or microwave motion detectors to switch them on.
We've been experimenting with various units from eBay and these beat the socks of the wimpy path lights. We glue a magnet or two to the rear of the light and stick them on the metal barn, shipping containers, etc. We took some of the repurposed hot water heater tanks and placed them on the path between the container and barn and they make great supports to stick the lights to. More analysis is ongoing. So far I much prefer the microwave detectors for 2 important reasons. |
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[#21]
most everything in my house was/is CFL, Ive been steadily switching them over to LED, I'm switching everything in my boat to LED also, worth every penny.
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[#22]
Quoted:
Have you ever had to use that CO2 fire extinguisher ?? View Quote Years ago I purchased about 12 or 15 NIB of them in a lot on ebay at a super good price. About the same time frame I bought about 10 Halon's at good prices. More than 3/4 are deployed in various places, shipping container, stealth trailer, etc. I had to use one of the Halons [only about 1/2 a pound, it still has abt 10 pounds remaining, need to top its pressure back up w/ N2 to 175psi, but it'll work fine without] in May or June, when I was cutting a Timkin bearing with CBN tooling on a lathe. Caught on fire and grabbed a Halon and a tiny poof and it was out. |
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[#23]
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[#25]
Cool posts and info Expy (as usual).
I'm thinking about trying these 12v LED Van lights inside my building when I get everything together. I'll just staple them up across the ceiling/walls until I get enough light. They're cheap and already 12v, so I can mess around with where I put them. I'm going to try putting the batts and mppt charger near the middle of the building (30' length) to try avoiding voltage drop over the wiring runs. They're cheap and they seem to review well. If they suck I'll just pull them back down.lol 12v LED Van interior lights (10 modules) on Amazon for $13.99 Amazon pic: Attached File Amazon customer review pic: Attached File |
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[#26]
Sidetrack: I've been using a couple of the 4', 4500 lumen "shop light" LEDs as grow lights for the last month, and they're doing great. The baby plants (mostly lettuce, kale and whatnot at this point) really like 'em, and we don't have to constantly change the height of the lamps to keep the seedlings from getting all leggy. They're doing better under the LEDs than they do under the 8' HO fluorescents that we usually use for bedding plants.
I just ordered a 10-pack of these lights to replace all the lights in the bedding plant/winter holdover area we've got set up in the basement... three of the dual 8' fluorescents (6 bulbs total) and two 400w metal halides. I think they're going to perform better, give us more even light distribution, and use a bit over 1/3 the power of the current setup. |
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[#27]
Prices of outdoor LED "barn lights" have also been dropping recently.
The local big box stores are still selling outdated, overpriced crap, but there's plenty of better stuff online. Example #1 Example #2 Example #3 Example #4 |
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[#29]
The GE Stick LED lights are not as easy to find now, Sam's Club still has the two pack of the hundred watt equivalence but they got rid of the lower wattage versions.
My local Kroger had the three packs of various wattages on clearance so I picked up several 3-paks for around $4. I like the tip on removing the case, I might try that with two of the hundred watt equivalent versions I have. |
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[#30]
Does anyone have ideas what Infra Red LEDs could be used with the IR and microwave sensing solar-outdoor floodlights posted above, that could be put around for surveillance applications?
Could make a usable and economical IR light solution for a lot of purposes, incl NV. |
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[#31]
A heads up...
Over the winter something has happened to various LED/Solar/sensor outdoor lights. We stuck them at a lot of locations [testing various models and brands] to light up areas we go at night and back and forth. [We used repurposed hot water tanks as 'standards' along one path and attach the lights w/ glued on magnets from eBay, like the 3 inch round ones in the H_F catalog. Need moar tanks] Out of ~15, many have failed by having little sensitivity to detect and one just glows very dimly all night w/ 30 LEDs. Both the microwave and IR sensor models have failed or are degraded. Don't have time to analyze now, but will, and will report. Some are working PERFECTLY tho! |
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[#32]
That's a good amount of light! Should be plenty for my plebeian shop
Nice setup you've got there... |
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[#33]
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