A little led advice for a slow guy

I’m new and been reading some threads and it seems like y’all have some extensive led knowledge among other I’m trying to build some lights i know this may not be the place but I could use some advice if anyone is up to it thanks

this is the place but you need to actually ask the question

sorry yeah that may help what I wanna do is build led flood light 2700 kelvin that will run on 12/24 volts that I can put on a boat if it’s possible

Do you have a budget and space in mind? Easiest place to start with. Flower light or full cycle?
Is this for growing or just standard illumination?
Will there be a height restriction?
Will you be running this on batteries? If so are you quite sure that your batteries outputs 24V? Or are you planning to use a led driver between battery and leds?

LED light bars on eBay are dirt cheap and will make a super nice boat light.

It would be sweet if i could find some that burn around 2700 kelvin any higher than that light wont penetrate water i was thinking i xould by some of them and maybe chang the chips or something to that tune hoping maybe someone had tried it on other endeavors thanks

Jbird5986 said:

It would be sweet if i could find some that burn around 2700 kelvin any higher than that light wont penetrate water i was thinking i xould by some of them and maybe chang the chips or something to that tune hoping maybe someone had tried it on other endeavors thanks

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What is this higher than 2700k it wont penetrate water deal? It most certainly do; source everything is not black under water (unless you go deeep down).
What are you hoping to light?

I know it sounds crazy but particles in water like mud make bright light reflect think of it like driving in the fog i would like for the lights to have everything other than battery attached voltage can be 12 or 24 would like to run straight off batteries but not a must

MIHEAL 110V(2 Pack) 50W LED Flood Light, Warm White(2700K), IP67Waterproof Super Bright Security Lights, Outdoor Floodlight for Yard, Garden, Playground, Basketball Court [Energy Class A++] - Amazon.com


Amazon.com: 200W Car Power Inverter 12V DC to 110V AC Converter with 3.1 A Dual USB Quick Car Charger Adapter : Automotive

Jbird5986 said:

I know it sounds crazy but particles in water like mud make bright light reflect think of it like driving in the fog i would like for the lights to have everything other than battery attached voltage can be 12 or 24 would like to run straight off batteries but not a must

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How much power?

One of these...


And one of these to power it.

That light engine deal looks kinda what I had in mind but the lights 7cardbud found are the closest I’ve seen I really appreciate y’all’s help I know this isn’t really the place but it’s defiantly only place people been willing to help why does the light engine have the large heat sink but Amazon light has nothing.And while I’m asking stupid questions is there any way to upgrade the Amazon lights mentioned above?Im thinking if I go Amazon route I will need the constant current box as I will be attempting to run 10 lights if I understand it correctly to high or low volt = bad thanks again

That light engine looks like it could be seen from the moon I think I’ll buy one just for the sure he’ll of it gotta be honest though it does not look boat friendly I’ll put a life jacket on it

My amateur thoughts, I didn't like the sound of high voltage so I put 24v strips in parallel instead of serial and not constant current driver but the other ones which bonus are cheaper too. I put fuses on each strip in case a strip dies so I don't fry the others. Not sure if the drivers take dc input like you need but there must be some, like @1212ham recommended.

Hope you know electronics. It must be that you can't go strait from the battery to the lights without some regulation in between. That sounds like it would be a recipe for disaster.

Jbird5986 said:

I’m new and been reading some threads and it seems like y’all have some extensive led knowledge among other I’m trying to build some lights i know this may not be the place but I could use some advice if anyone is up to it thanks

Click to expand...

No boat lights here !!

Jbird5986 said:

I know it sounds crazy but particles in water like mud make bright light reflect think of it like driving in the fog i would like for the lights to have everything other than battery attached voltage can be 12 or 24 would like to run straight off batteries but not a must

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Yes, it does sound crazy. That's because blue and green light penetrate water much further than red, yellow and amber light. So you have everything back-to-front.



Your 2700K light will be absorbed way before 5000K.

Just look at the difference in spectral output as you increase CCT (Kelvin temperature). This is a composite spectrum, meaning it has more than one type of LED, but it is useful to show the difference between 2700K and 5000K.



Ask me how I know: we have been developing marine lights for growing algae and they respond much more to the green and blue spectra than the red spectra, as you would expect.

The deeper the water, the bluer the colour, right? Which is just what the chart above shows.

Hopefully that answers your question. If it doesn't, then that's because you haven't actually told us what you want to do with the light other than flash it in the water. I assume you want to use it to be able to see the lower, submerged parts of the boat and not just light up the deck.

The more information you provide, the better quality response you will get.