I picked up four of these for my boat.
https://www.amazon.com/gp/aw/d/B09MVXLDMW
The lens is pretty cool, nice wide rectangular beam from the flood side.
Unfortunately, each pulls 1.2 amps from a charged 17ah SLA.
Any ideas which resistor I should piggyback or short out?
Looks like a buck regulator. R1 and R2 (in parallel for higher current capability and more accurate value) appear to be the sense resistors (0.1 Ω total). Removing one should halve the current.
But this is just guessing. I can’t really see the traces.
I would like to double the current. I will be using a dimmer so when I want to run them a long time I can just not crank it all the way.
Your initial post sounds like you want to reduce the current (“Unfortunately, each pulls 1.2 amps from a charged 17ah SLA”). The driver is not made for delivering more current. Also – where do you intend to place the dimmer? Changing the input voltage won’t make much of a difference.
Yeah I suppose I should have been more clear. Those look like XML2, and I see paste under that big board, and the housing has fins, seems like I could at least get 25w.
If instead of removing one I bridge one with solder it should double? Though hopefully it isnt one resistor per led.
This is the dimmer. Already using one with 8 similar lights on my truck, but Brian custom made one for my boat that has SOS instead of strobe. LED Light Bar Dimmer LBC350 by Clevertronix - YouTube
If you bridge one resistor, it will puff some smoke in your face.
Sorry, without more details, schematics or the light in front of me, I can’t help you any further.
Well, I am glad I didn’t try that! Thanks