RC-Monster Forums - View Single Post - DIY High Power LED Rechargeable Flashlight

sikeston34m · **DIY High Power LED Rechargeable Flashlight -** 02.20.2010, 07:06 PM

OK, I just ordered a SSC P7 High Power LED and want to come up with a good Lithium Ion Power Source for it.

This 10 Watt LED is supposed to put out 900 lumens of bright white light.

According to the specs, this LED operates on 3.0 volts to 4.2 volts.

It draws 2.8 amps of current.

So with that in mind, I needed a good Rechargeable Power Source.

A Large 1S30P Battery Pack was constructed using 30 new cell phone batteries wired parallel.

Each Battery is 800mah, so in theory, we have a 24,000mah Pack.

Final size of the pack is very close to a 6 volt dry cell battery.

Each 800mah cell has it's own pcb to protect against overcharge/overdishcharge.

Drawing 2.8 amps, this Pack should power the LED for 8.5 hours.

Hmmm.............a few questions remain.

Will this need a LED Driver and additional heat sinking to protect from thermal runaway?

Thoughts?

	(#1)
sikeston34m RC-Monster Brushless Offline Posts: 2,085 Join Date: Sep 2007	DIY High Power LED Rechargeable Flashlight - 02.20.2010, 07:06 PM OK, I just ordered a SSC P7 High Power LED and want to come up with a good Lithium Ion Power Source for it. This 10 Watt LED is supposed to put out 900 lumens of bright white light. According to the specs, this LED operates on 3.0 volts to 4.2 volts. It draws 2.8 amps of current. So with that in mind, I needed a good Rechargeable Power Source. A Large 1S30P Battery Pack was constructed using 30 new cell phone batteries wired parallel. Each Battery is 800mah, so in theory, we have a 24,000mah Pack. Final size of the pack is very close to a 6 volt dry cell battery. Each 800mah cell has it's own pcb to protect against overcharge/overdishcharge. Drawing 2.8 amps, this Pack should power the LED for 8.5 hours. Hmmm.............a few questions remain. Will this need a LED Driver and additional heat sinking to protect from thermal runaway? Thoughts?