Please help to select a power source for 100W LED? Answered

I want to make a spotlight using 100W LED powered by a 2200mAh LiPo. I understand I need a power booster for this. Please suggest one of the correct specification.

The LED: http://www.ebay.in/itm/100W-LED-COB-Chip-CW-WW-Blue-Red-Green-Super-Bright-single-color-/331632451175?var=&hash=item4d36d59e67:m:mxsTE0PLt5bDCjp8vJJs5CQ

The battery: Standard LiPo of 11.2V. max current of 55A

Thanks a lot

Tags:leds 100w power supply L E D led booster

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.

steveastrouk

5 years ago

http://www.ebay.com/itm/100W-DC-DC-Boost-Power-Converter-LED-Driver-Constant-Current-Voltage-12V-24V-CAR-/281764885584?hash=item419a7ef450:g:L7gAAOSwHnFVv8Ls

Wired_Mist

Answer 5 years ago

+0.99

That Definitely what your looking for,

But the Spec's for that say that the output current is 0.5 - 5Amp.

If the Led is using 32-36V (on the upper end of what the device can supply) then it will most likely provide less then the 5Amp max.

You think it could do the 3Amp the Led needs?

Btw I saw this of the right side of the screen,

https://www.instructables.com/id/homemade-100W-LED-flashlight/

steveastrouk

Answer 5 years ago

His MMV...

The 100W flashlight lacks any current control.

Wired_Mist

Answer 5 years ago

Yeah I noticed that too! See a bit odd eh?

Mainly posted that link for the other components like the heat-sink and lens

Looks like he compensated by keeping the voltage lower, 30V instead of 35. Should be right in the range were the lowed Voltage mean the device isn't pulling more current. Kinda like those cheep key-chain flashlights.

steveastrouk

Answer 5 years ago

Perhaps as well, if that LED turns on fully, it will make quite a bang without a limit....

steveastrouk

5 years ago

What's the maximum discharge current from your battery ?

AlekhK

Answer 5 years ago

55A