So I saw a Youtube video of a guy that made a flashlight out of one these 100W LED's you can get on Ebay for about 5 bucks...
These things fit perfectly onto a computer CPU heatsink with fan and it's the perfect cooling for it.
Super flood turns night into day. I think these things are made for parking lots, etc...
![]()
The Youtube build I saw was awesome, but there was one thing that I didn't like about his...
He used a round pack of Li-Ion's that definitely blocked the air flow through the tube, which would not be good cooling, and it would also hurt the fan...
So...
Since I already had a CPU heatsink with 12 volt fan, plus various other supplies laying around, I set out to make myself something similar but with a LiPo pack which would lay flat inside and allow plenty of air flow. :)
![]()
My build is designed around this battery which I already have a nice balance charger for my other Lipo cells I have for my RC heli's...
All parts can be picked up for very cheap! (except the battery - that's the only real expense. I paid $60 for the battery)
I molded some easy to make battery mounting plates with some of that 2 part marine putty...
![]()
![]()
Details:
![]()
That large boost driver was only 13 bucks. It has voltage adjustment as well as Amperage. So you can dial your LED in perfectly.
The LED needs 36 Volts and 3 Amps. My Lipo cell draws about 7.8 Amps at full charge in order to boost to 36 Volts at 3 Amps...
The smaller driver is a buck driver for the 12 Volt fan. It only cost about 5 bucks. The fan only draws about 380mA.
I have a voltage monitor on there as well but that only draws about 7mA's.
Battery voltage monitor color code:
Bright blue - Full charge
Cyan - Very good
Green - Good
Yellow/Amber - Low warning
Red - Batteries low
My total current draw for everything is 8.2 Amps at full charge.
![]()
![]()
Balance charge plug out the back, and charge plug out the front...
![]()
![]()
Handle mounted perfectly balanced... :)
![]()
Night turns into day! :cool:
![]()
Click here to see my list of projects and tutorials! :)
![]()
These things fit perfectly onto a computer CPU heatsink with fan and it's the perfect cooling for it.
Super flood turns night into day. I think these things are made for parking lots, etc...
The Youtube build I saw was awesome, but there was one thing that I didn't like about his...
He used a round pack of Li-Ion's that definitely blocked the air flow through the tube, which would not be good cooling, and it would also hurt the fan...
So...
Since I already had a CPU heatsink with 12 volt fan, plus various other supplies laying around, I set out to make myself something similar but with a LiPo pack which would lay flat inside and allow plenty of air flow. :)
My build is designed around this battery which I already have a nice balance charger for my other Lipo cells I have for my RC heli's...
All parts can be picked up for very cheap! (except the battery - that's the only real expense. I paid $60 for the battery)
I molded some easy to make battery mounting plates with some of that 2 part marine putty...
Details:
That large boost driver was only 13 bucks. It has voltage adjustment as well as Amperage. So you can dial your LED in perfectly.
The LED needs 36 Volts and 3 Amps. My Lipo cell draws about 7.8 Amps at full charge in order to boost to 36 Volts at 3 Amps...
The smaller driver is a buck driver for the 12 Volt fan. It only cost about 5 bucks. The fan only draws about 380mA.
I have a voltage monitor on there as well but that only draws about 7mA's.
Battery voltage monitor color code:
Bright blue - Full charge
Cyan - Very good
Green - Good
Yellow/Amber - Low warning
Red - Batteries low
My total current draw for everything is 8.2 Amps at full charge.
Balance charge plug out the back, and charge plug out the front...
Handle mounted perfectly balanced... :)
Night turns into day! :cool:
Click here to see my list of projects and tutorials! :)
