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Step 8Specs and Parts List
SPECS:
Three Cree XR-E R2 LEDs, 700-lumens, 3-hr run time on high using 14.8V 2.4Ah battery, dimmable with adjustable pot., light with mounting bracket weighs 0.22-lb (99-grams), 4 batteries weigh 0.40-lb (184 grams), 1.5-A Li-ion charger, LED parts cost $75, battery and charger $100.
PARTS (US Dollars)
Part - Price - Supplier
LED ASSEMBLY
3 Cree XR-E R2 Lamps - $6 each - Deal Xtreme
3 Polymer Optic Lenses - $3 each - LED Lighting Supply part #170, 171
Hammond Enclosure - $8 - Newark Electronics part #1455B1202BK
Half brick heat sink - $4 - Newark mfr. part #241202B92200
Lexan MR10 12x12 inch sheet - $12 - Piedmont Plastics
36-inch Aluminum L-bracket - $4 - Home Depot
Buck Puck 1A driver w/pot. - $20 - LED Supply
Arctic Silver - $12 - LED Supply
On/off switch - $0 - Had one; only a few dollars at Battery Space
BATTERY
18650 Li-ion 14.8V 2.4Ah - $74 - Battery Space
Li-ion Charger - $27 - Battery Space
Molex connectors - $0 - Had some, only a dollar or two
Totals: $75 for light and $100 for power.
Final Note:
A month or two after I built this light which cost $175 in parts and was enjoyable to build, a company in China called 'Magic Shine' came out with a 900-lumen LED bike light for $80 including charger, battery pack, and a very nice enclosure. It has a three hour burn time on high and is slightly brighter than this light. It can be purchased from Deal Extreme in China or GeoManGear in the U.S.
"...a lamp to my feet and a light unto my path."
Three Cree XR-E R2 LEDs, 700-lumens, 3-hr run time on high using 14.8V 2.4Ah battery, dimmable with adjustable pot., light with mounting bracket weighs 0.22-lb (99-grams), 4 batteries weigh 0.40-lb (184 grams), 1.5-A Li-ion charger, LED parts cost $75, battery and charger $100.
PARTS (US Dollars)
Part - Price - Supplier
LED ASSEMBLY
3 Cree XR-E R2 Lamps - $6 each - Deal Xtreme
3 Polymer Optic Lenses - $3 each - LED Lighting Supply part #170, 171
Hammond Enclosure - $8 - Newark Electronics part #1455B1202BK
Half brick heat sink - $4 - Newark mfr. part #241202B92200
Lexan MR10 12x12 inch sheet - $12 - Piedmont Plastics
36-inch Aluminum L-bracket - $4 - Home Depot
Buck Puck 1A driver w/pot. - $20 - LED Supply
Arctic Silver - $12 - LED Supply
On/off switch - $0 - Had one; only a few dollars at Battery Space
BATTERY
18650 Li-ion 14.8V 2.4Ah - $74 - Battery Space
Li-ion Charger - $27 - Battery Space
Molex connectors - $0 - Had some, only a dollar or two
Totals: $75 for light and $100 for power.
Final Note:
A month or two after I built this light which cost $175 in parts and was enjoyable to build, a company in China called 'Magic Shine' came out with a 900-lumen LED bike light for $80 including charger, battery pack, and a very nice enclosure. It has a three hour burn time on high and is slightly brighter than this light. It can be purchased from Deal Extreme in China or GeoManGear in the U.S.
"...a lamp to my feet and a light unto my path."
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Feb 13, 2010. 6:33 AMbronxbomber
says:
The magicshine is sold out everywhere, it may be bright to specs but it is really the same as this one. As the battery it uses is junk and goes out to battery heaven in less then a weeks time. Now maybe if you buy just the head light and add this battery it should work great. But this one looks more fun to build and can change led to high ones. They do have 540 lum leds which should out perform that magic-hine and get a better batter for 80+ at the website above or build your own. cheaper to build a battery then let them, you can save $10-30 on doing it yourself.
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Nov 22, 2009. 5:00 AMgiesken
says:
Great job, thx
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