LED battery power?

B

boulder

Well-known member
I have one of those 500 LED lights from Ebay and am looking to power it from battery. Someone mentioned on this board that the Duracell (Xantrex) Powersource Mobile 100 worked great and was about $30 but that has been discontinued and I cannot find that anywhere. This light draws about 30W so does anyone know of an alternative to the Powersource 100 that wouldn't break the bank? The nice thing about the Powersource was that it was small and could be velcro'd on the back of the light unlike larger UPS's

Or if you know of a supplier of the Duracell please let me know...I've scoured for hours and called many places that claim to have them in stock but don't
 
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Try Bescor for portable battery packs. Hopefully the fixture will take 12 volts dc so you don't have to waste power with a battery and inverter setup.
 
Not that anyone is interested, but I purchased the Duracell and I must say it is an awesome solution in combination with the Ebay 500 LED. I'd estimate the 500 LED at about 300 watt equiv and I velcroed the Duracell to the back and have a light, portable 300 W battery driven light for about 1 1/2 hours. Fantastic solution when no AC is available.
 
Can you provide a link to the LED lights please, I can't find anything after searching "500 LED" under ebay and DVXuser.

Thanks,

-J
 
They say they consume 30 watts yet put out 300 watt light equivalent ? OK, I did a little math on this one as I am tired of seeing overrated specs on imported led lights. Led brightness are measured in either LUX, Lumens, or FC ( foot candles ) at a distance of roughly 3 feet ( 1 meter ) from a white flat surface. On the average, for a led light to consume 30watts of power ( wattage is a measure of power P, Where V is the voltage X times the current ( in AMPS, A ) ( 1 Amp+1000ma, milliamperes). So this light that consumes 30 watts really in reality gets about 70 to 85% of that to the leds as the driver ( leds do need a driver or else POOF ! and smoke ) eats up a little of that power to do things ( like keeping the leds fed on a steady diet of designated current). Now we have about 26 watts at best going to the leds.The most efficient leds out there are in the order of 135 lumens per watt ( and those are rated at 350ma input ( roughly 1/3 of an amp.). I say rated at because the leds are usually measured that way. I really don't think they use those, but let's assume they use something more in the 90 ish, which is really good stuff. Now 95 lumens per watt X by 26 watts is 2340 lumens that is comming out of those leds. Let's round things off and give them the benefit of 2500 lumens. Those multi led units will most likely be a bit bluish in color and the beam angle is probably less than 60 degrees ( most likely 40 to 50). Correct the color with gells, filters, amber panel, whatever, and diffuse the light by adding a scrim, frosting panel, diffuser and what have you ? a light that has lost it's lumenosity ny a full stop or more. Enen if the light is used without the diffuser and CC filter, that 2500 lumens is really equivalent to a 150 watt filament incandescent bulb. There you have it, 300 or sometimes rated at 500watt unit is really 150watt. At best.) Checked out wikipedia under incandescent light bulb ( near bottom of page) for lumen to watt equivalent.
 
I'm saying the 500W was overrated and it seems as bright as my 300W. I'm telling you it is brighter than a 150W bulb and that is fine if your math disagrees, I am using it as a replacement for my 300W and it is doing the job.
 
I never was good at math, but I guess that even remotely near a 300 watt is a really good led light at that price. They must be using leds that are 10 times more efficient than bulbs. ???
 
I have the 1200h led from china which is very bright... i power it with one of these.

google.....
Ring Automotive RPP210 12V 40ah Power Pack Complete with 300W Inverter

works great.
 
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