Cllena Waterproof DC/DC 24V to 12V 10A 120W Step Down Converter Voltage Reducer Regulator Buck Transformer Power Supply

The label (see photo) implies that the yellow cable is for 24V input and red is 12V output... however, that is clearly incorrect based on the product photos (which my husband didn't see in time). The documentation that came with it does not specify cable input/output either. During install he connected it based on the label and shorted out the output side. Looks like the label was applied upside down - doublecheck before connecting! We've ordered a replacement and if it works I'll upgrade our rating.

This is one of the most useful upgrades I've made to my boat. I boat-in remote camp for a week at a time. With long days on the water and not recharging every night, I sometimes end up with a dead starting battery due to livewells, stereo/amp, and other things running. This unit allowed me to rewire nearly all 12v accessories to my 36v trolling motor battery bank so that my starting battery always has power. And it pulls power from across all three batteries for even wear vs connecting accessories directly to individual batteries in the bank.One note: I read some reviews that state the unit was shorted upon arrival due to a significant spark created when attempting to connect the unit. I had the same experience. After emailing Cllena directly (thinking the unit was shorted), I was advised this is common and got some great help from them. I ended up putting a 50 amp switchable breaker in line between from the 36v bank and power input on the converter. Since the switch was off, I had no spark when connecting. I switched it on, and voila! It worked perfectly. So, don't assume a big spark is a sign of a short - it's just a result of 36v vs what some might be used to in 12v systems.

I installed this in my 48V golf cart to run the stereo and rock lights. I also installed a 20 amp switch to the ground side so I could turn the regulator on and off. Well the switch took about 5 cycles before it arc welded the contacts. Tried another switch and same thing. So I up graded to a 35 amp switch and it seems fine now. This thing draws a lot of power when first powered up. But battery draw seems low afterwards, I didn't check current draw to verify. I also have an issue with using the bluetooth on the stereo due to interference from the regulator. They are mounted within a foot of each other so that may be causing the issue.

I use rechargeable electric weed eaters to trim and edge my yard, and a vintage 2009 electric Neuton EM5.1 Mower to keep it cleanly mowed.But the OEM two 12V 10Amp sealed lead acid batteries were woefully inadequate for the task, and I didn't really care for my hacked version with two 12V 21Amp sealed lead acid batteries that I intentionally broke open and flooded with standard battery electrolyte solution, to prevent the cells from drying out, which although a great improvement, weighed 25 pounds for the batteries alone.But when I got my hands on a state-of-the-art LiFePO4 12V 32Ah (384Wh) Rechargeable Battery (batteryspace.com item#26650), weighing only 9 pounds, I made it nest securely into the Neuton EM5.1 mower, and then mounted the Cllena 12VDC to 24VDC Boost Converter 20A 480W Step Up Voltage Regulator Module (see photo).This lawn mower finally works like should, thanks to 2020 technology.The 24V / 32A / 768 Watt 4300 RPM electric motor that direct-drives a sharp, 13.5-inch sharp steel cutting blade (6.75-inch radius) typically draws about 4 - 5 Amps when idle, and about 10 Amps (240 Watts) when mowing, and about 15 Amps (360 Watts) when mowing deep grass.I highly recommend this excellent electronic device.

Good if the 12V port has proper volt, amp, and ohm’s resistance wiring for fire resistance energy conversion. A Zero Breeze air conditioner uses less energy than larger units, and in campers, energy is limited, so it’s a good solution to keep cool.

Should you install a 12V solar system or a 24V solar system? If "bigger is better" why not 48V?So we wanted to install several 12V power points since we had a lot of luck with them previously. This device was the easiest way of enabling our 24V solar system to provide 12V. We also have a 12V water pump (although, I've recently discovered the same pump is available in a 24V version <sigh>) Connecting this converter to the "load" on our solar controller made it a simple matter to power the powerpoints and the water pump. The pump maxes out at 10Amps so 120W from this 480W converter should be no problem.OTOH, we have a 240V house (Aussie rules) but the 120V appliances are so much cheaper. We thought about connecting at 3000W inverter to this converter. Oops. I'm sure you see the problem.''The converter works great. The problem is figuring out what you need it for, :-)

This product works as advertised, for a little bit. Attempting to pull full load through this buck converter is not a good idea, as it will easily overheat in the stock configuration if you do so. I imagine if you pull half load it will not overheat, though you may see voltage drop. Indeed with only passive cooling from the aluminum heat sink this thing will get searing hot, though luckily the overheat protection works as advertised and immediately shuts the unit off, so that's good.I have found that salvaging an old 12v computer processor fan, and rigging it to provide air cooling to the case that I can pull a stable 396w. This result is nearly 100w below advertised rating, but let's chalk that up to running the output through a 12v 500w pure sine inverter, and feeding the inverter signal into a 59v 7a power brick to get that reading. If you do the math, I should get around 410w, so I'll accept the results.Even so you cannot deny that this buck converter ends up being a terrible choice for anyone looking for a simple installation with results (entirely) as advertised. With quality like this I must imagine you could even get a unit capable of self-immolation should the sensors fail or, worse yet, not work at all. For somebody capable of tinkering or able to find decent work-arounds, this is nearly a steal for the price, but do not expect it to pull near rated loads without some work on your part.To think all it needs is a good enough fan...

This unit arrived on time and was carefully installed the load current was led lights (3.5amps) it worked for 5 hours and never worked again.....I feel my money was stolen....I am an electrical engineer with 35 years experience ,,,It was installed in a careful and competent manner. Since then I have installed an linear regular (LM388) which has worked fine with no problem It would appear that these units are poorly designed......??? or at best not properly tested! Good luck all

It works very will on the 24 volt espar heater:: that’s in a 12 volt service truck :: witch the heater pull only 4 amps

Worked good, been hooked up to my golf cart for 3 weeks to power my headlights and taillights. No issues. Good price for this.

Commandé pour contrôler 12- 17 volts mais ne fonctionne pas pour ça. Seulement pour 24 v. Item tel que décrit

I bought 2 of them,they stopped working in matter of days after the 14 days return policy.I won’t buy this product,waisted time and money.