Requesting help with bridgelux as backup lights

[z_ledaddiction]

Since the bulk of bridgelux post are in fixed lighting thread I figured I'd post here but if this thread fits in another section, please move it. =]



Hey guys,

I'm new to the forum and a big fan of leds. I have an evolux S and zetalux pro 2, from earthled(dot)com, that light my room as well as other led toys. I'd post some pics of my small collection but I cant find my camera at the moment.



In any case, I was browsing this forum last night and these two threads about bridgelux really caught my attention: http://www.candlepowerforums.com/vb/...d.php?t=296623 and http://www.candlepowerforums.com/vb/...d.php?t=297115



Ever since Katrina (east coast here) a few years back, I've been into backup lighting. When the power goes out, I usually plug in my 7w zetalux pro 2 to my inverter thats connected to a 12v 7Ah SLA battery.



What I'd like to do with this project is mess around with this bridgelux model and decide afterwards if I want to go with some higher powered ones. I want to light up my room and other areas of the house with moderate lighting to start off with until I get a good experience going. I've seen the lantern section and light distribution with the lanterns aren't what I'm looking for. Ive already ordered 2 bridgelux 241s:

• High Brightness LED Arrays
• LED Color:Warm White
• CCT:3000K
• Viewing Angle:120°
• Opto Case Style:SMD
• No. of Pins:2
• Color Rendering Index Max:82
• Forward Current If:700mA
• Forward Voltage:6.6V
• Luminous Flux:265lm

I'm looking to regulate it with a HKO700 found here:

http://www.constant-current.com/html/hko_.html

Voltage input: 5, 8-35 VDC

Output current: 700mA



And Im looking to power it with some IMR AW 18650 @ 1600mAh (or higher if needed). I'm looking to do a 2x4, series and parallel, battery configuration to get 7.4V @ 6,4000mAh (did I do my math right?). I'd like to get a few hours of lighting out of this setup. I already have some heatsinks and epoxy at home waiting to be used.



Can you guys look over my setup and see if I'm heading in the right direction? Any recommendations or comments will be greatly appreciated. Thanks in advance guys.

 

[cjsnr]

just wondering how you got on with your bridgelux led. I'm looking for a cc psu for the bridgelux es 2600lm, 37.4v/1A, around the 40-50W range. Did you find a suitable 'cost effective' ps/led driver?

 

[blasterman]

Not trying to be buzz-kill given I've built so many cool projects with Bridgelux, but warm-white Bridgelux are likely the worst choice for battery powered applications. The 241s are less than 60lumens per watt of efficiency. Compared to neutral white XM-L or XP-Gs they will eat your batteries up twice as fast per lumen.

If this is indeed for emergency applications you might want to look at a different emitter.

 

[AnAppleSnail]

I actually would suggest using a product like this for this build. It avoids driver electronics but is still LED. I have had good experiences with them. Here is a blog post about home lighting with them:

12V LED strip lights

They plug right into 12V power, and glimmer down to about 7v. The fact that they create spread-out light if you run a strip through your living area makes 'emergency lighting' sense. At 12V they'll want a lot of power, but I suggest that you throttle them to 9v for a cheap test of how you like LED lighting. Amazon will ship you a 15' roll for about $15, and you can cut to length and wire them up.

 

[Dr Evil]

Did any of you notice the date of the original post? Hopefully he'll still get a post notifcation.

 

[AnAppleSnail]

Did any of you notice the date of the original post? Hopefully he'll still get a post notifcation.

I aimed at cjsnr.