HiLetgo 250W DC-DC Module 10-40V to 10-50V 6A Adjustable Step-Up Power Supply Module Constant Voltage Constant Current Power Converter

I originally bought one of these to keep a supercap box in my vehicle charged up to 14.5v volts, from the 12v supply of the truck, and it's working well. I configured the voltage to 14.5v and current to 5a, and mounted it inside the lid of the lid using stand-offs since it does get warm in use. The back of the board is a thin aluminum plate, which does a good job of heat dissipation, and the large coil does a good job of handling the rated power. I didn't need to add any additional heat dissipation though, the aluminum backing kept temps safe. (though do use standoffs to keep the board away from things like plastics) I ended up buying a second one as a spare since these are reliable and useful to have around when needing to boost voltage. (though you need at least 10 volts at the source) Adjusting the output voltage is easy, just turn the adjustment screw. Current is a little more tricky, you need to apply a load at the current you want, and then adjust the current limit screw to right before it starts cutting back the voltage.I've bought small boost converters and big ones, but this one fits right in the middle, where you have some voltage and need several (but less than 6) amps

Did not produce anywhere near the energy output they were advertised for. Though using it would be easy normally, the lack of natural functionality and being limited to 240 milliamperes was a real problem. When adjusted below 17.50 volts dc, the unit would entirely cut off-voltage dropping to the input. I would not buy again, as though it was cheap, it did not work well. It also got quite hot and smoked.

Good unit, all 10 worked. Can easily output 50W, 35v/1.4A with 14v input.Size is smaller from previous units i purchased (30 units). See pic of this smaller unit. I wasnt expecting this and must modify a bracketFuse has been removed, wires are lighter gauge and moved in slightly from board edge.I would like to see wires moved in farther from board edge..make me think they can short to aluminum substrate. Maybe use a connecter with no wires

Constant values hold nicely as long as power-in is sufficient. I initially tried to adjust CC with no load on device. Just 10 amp DC range on VOM. For the short duration I put the meter across power-out (less than a second) it appeared that I was drawing max current well above 10 amp. The device survived that mistake so it has good short circuit protetion. Once I loaded the output both CV and CC were easily adjusted and accurate. Very little if any drift as long as power demand stays within reasonabe limits

I connected the boost converter (https://www.amazon.com/dp/B07T137H2Y) to an adjustable power supply module (https://www.amazon.com/dp/B01LWXAC5E) on the output. And I have a Volt/Ammeter (https://www.amazon.com/dp/B072BY4XZ7) on the input. All supplied by a 12V marine deep-cycle battery on the input. It was giving me 24v out from the start. I need 48v so I dialed this boot converter up to 50v, and fine-tune the output using the adjustable module. Been running for 2 weeks 24/7 and it's driving 7watts during the day and 15watts at night. No troubles so far! The output is powering a PoE ethernet hub that as a pair of PoE cameras (https://www.amazon.com/dp/B07V1WKRBB). It's all working really well! Once I'm done will the cameras, this will be my workbench power supply.

This module just failed on me after 3 years in-use. Not bad for the price, but I’ve moved on to a more industrial module that I can rely on (at 10x the cost). Even after failure this held its output voltage, but the current would drop out momentarily causing my POE devices to malfunction.Be aware that at 48v / 60w this unit gets too hot to touch. My IR gun reads about 150°F. I would advise active cooling.I’m using this in a custom DC-DC UPS that powers my network devices from a Li-Ion battery pack during a power outage.

Does output the rated power. BE CARFUL using power supplies and high cell batteries. If you do not resist the input flow of current the current ripple will blow them up violently. If using a power supply turn your amps down and bring them up slowly. If using high output batteries use a resistor or anti spark connectors. lipos will blow them with no current protection. Hear my warning.

Not even close to 250w! Good power supply and the proper settings on the PSU with CV and amps set to maximum for the load draw which was a 165w smart charger. Got maybe 43w and thought the device was faulty. Started poking around and noticed really bad solder pads and flux burns allover the board. The inductor coil silicon on one of the boards was dangling off after shipping and that one has so much noise I threw it away in fear it was a fire hazard.This thing looks and feels nice but as soon as you start to use it you will notice how cheap it actually is. Ugh. This brand used to be one of my goto brands. Missed the window for return now they are both dead and not even a months old. Oooooooh my lanta.