What is Reddit's opinion of ACEIRMC 3pcs XL6019 5A High Power Current DC to DC Step-up 5V 6V 12V 24V 3-35V to 5-40V XL6019 Converter Adjustable Voltage Regulator Power Modules Boost Module Booster (3pcs)?

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Power is equal to volts times current. So your 18W LED strip requires 1.5A at 12V. So does that mean you're good since your battery can output 4.8A? Well, no because that 4.8A is only at 5V. Power is conserved when you change voltage with the DC-DC converter and since P=V*I, the only way to increase volts is to decrease amps. Your battery has 5*4.8=24W available, so it could power a single string of lights at 18W, but since there will be conversion losses in the converter, it would be cutting it close.

However, the bigger problem is that the 12V boost converter you linked to is only rated for 0.6A, so that won't do at all. You'd need something more like this to do the job.

If you want two, then that's twice the power, so double all the numbers above. You definitely won't be able to power do that with your current battery.

You could use a DC Voltage Step Up Converter (something like this) to get 12v from a 5v power supply.

You could also use an inductor and transistor to pulse the inductor on/off like an oscillator (joule thief) circuit to get rapid pulses of higher voltage, but I have never tried using it to power a relay before, so I am not sure if that would work.

First, I would look at the cassette player itself, it may have a spec printed on it (either on the main label or right next to the DC jack) that says something like 5-9V 200 mA. That will tell you for sure what it can take. The player almost certainly has voltage regulation inside it (because batteries have variable voltage), in which case it might take a very wide range just fine.

If after checking that, you still need to get 6 or 7v from 5v, what I would do if I were you is get an adjustable boost converter, like this sort of thing. Then you can dial in whatever voltage you want.

I've been trying to figure out a way to replace the cooler in my SFF Dell PC for a few months. It has a proprietary motherboard so I have been struggling to find a cooling option that works.

Everything I've tried so far has failed. I tried looking into a 5v to 12v step-up converter a while ago but could find no information on it and could find nobody who could help me figure out how to get that setup working. If I could get something like this working, it would be great. Would you happen to know if it's possible? It looks as simple as cutting the wires between the fan and the fan header and plugging each end into the converter, but I haven't been able to find any info on it.

The Pi4 + Display is drawing more current than the boost converter is capable of supplying, so the Pi is having a bit of a brownout at boot and crashing. That looks like one of those XL6009 based boost converters that say they can handle 4A, but as I understand it, that's 4A on the input side.

If the Raspi is pulling 3A a 5V, that's at least 15W on the output side. Obviously, 15W has flow into the input side, so at 3.7V, that's 4.05A being drawn from the battery pack. And that's over the limit for the XL6009. Assuming a 4A input limit, the maximum current you'll get at 5.1V on the output is 2.9A, which isn't enough for a Pi4 and that display.

I think you need one of the XL6019 based converters for this application, which supports 5A on the input.

Wasn't able to find what voltage these lights use. If we knew what voltage your lights operated at, I was going to suggest these... https://www.amazon.com/Aceirmc-Current-Converter-Adjustable-Regulator/dp/B082XQC2DS/ref=sr_1_3?crid=1M2SLBH58QHPF&keywords=dc%2Bto%2Bdc%2Bconverter%2Bstep%2Bup&qid=1654104254&sprefix=dc%2Bto%2Bdc%2Bconverter%2Caps%2C93&sr=8-3&th=1

It's an adjustable buck boost voltage regulator. The blue little box with the gold screw in the middle of the board is called a trim-pot. You basically twist that with a little screw driver until you get the correct voltage. You would need a volt meter to measure the output from this board. This particular unit supplies about 30W of power. I think your lights need about 40W. This allows you to bypass your LED defective driver board, but you would lose functionality (like timers, choosing light color settings, etc..) This is just a power board. Also you don't know if anything else was damaged on the LED light strips themselves. If you had an adjustable power supply, you could test the LED strips themselves (https://www.amazon.com/Aceirmc-Current-Converter-Adjustable-Regulator/dp/B082XQC2DS/ref=sr_1_3?crid=1M2SLBH58QHPF&keywords=dc%2Bto%2Bdc%2Bconverter%2Bstep%2Bup&qid=1654104254&sprefix=dc%2Bto%2Bdc%2Bconverter%2Caps%2C93&sr=8-3&th=1) But that would require more money than what the LED lamp is worth. Sorry for the bad news. GL with your plants.

This is the exact part I bought. https://www.amazon.com/dp/B082XQC2DS/ref=cm_sw_r_cp_apa_glt_fabc_J3GDE2213J62QC76B0BR?_encoding=UTF8&psc=1