Neat little enclosure, LCD screen, easy to assemble and use and dirt cheap.
I bought to manually top-off charge my broken Jackery Explorer 1000. (It has a BMS that takes 25.2V) and charge other Lithium things.
Quirks/Gotchas:
1) It's pretty inefficient. I set my output to 25V 1A (25W). For round numbers, I turned the input up until input current was also 1A, so 31V@1A input gave me 25V@1A output. 31W in, 25w out. That's only 80% efficient.
2) At only 80% efficiency, it heats up to an alarming 70C within minutes and was still climbing. While I wouldn't mind just the silicon and heatsink getting that hot, the heat spreads to the capacitors, potentiometer, even the plastic box gets warm dissipating that extra 6W. Surely that kind of heat can't be good for the aluminum capacitors. I do love the cute little DIY case, but I'll probably remove the side panels so it can cool a little better
3) if you limit your input voltage/current (say 15V, 1A) and have 25V 1A as your output, it'll pull the input voltage down so far that'll it'll simply shutdown. That's a little disappointing, since you have to cut input power and/or press the output toggle button to get your output alive again. It'd be nice if there was a best effort attempt (e.g. instead of shutting down, give me that 15w instead of 0). It would be neat to be abl to use this as a solar charge controller. Similarly, some sort of auto restart after input brownout would be nice.
Overall it's a neat product, dirt cheap, and this hobbyist will keep it around for some random projects, but 35W (even 25W) is a bit much for it.
Make it a bundle
We found 1 bundle with this item:
DROK DC Buck Converter, 5.3V-32V to 1.2V-32V 12A Adjustable Power Supply, 5v 9v 12v 24V 30V 32V Step Down Voltage Regulator with LCD Display Volt Transformer Reducer CC CV for RV Solar Panel Golf Cart
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DROK 5.3V-32V to 1.2V-32V 12A Adjustable Buck Converter and 6V-32V to 1.5-32V 5A Regulated USB Buck Converter$29.99This bundle contains 2 items
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From the brand
Enjoy Life, Enjoy DIY.
DROK
- An expert in this field for over 10 years.
- A seller who cares you a lot.
Product Description
DROK has been engaged in technical research, development, manufacture and sale of all kinds of buck converters for many years.
With acquisition of leading technology, we strictly enforce quality management system and improve operational management, dedicate to produce high performance meters for customers.
"Integrity, Quality, Innovation, Customer" ----DROK
DROK Buck Converter
Parameters:
Input voltage range: DC 5.3-32V
Output voltage range: DC 1.2-32V (input should be at least 0.8V higher than output)
Output current: 8A for long-term stable work. If strengthen heat dissipation can reach 12A.
Output power: natural cooling 120W (within 8A). If enhance cooling can reach 160W
- Can be used as an ordinary buck module with over-current protection.
- Can be used as a high-power LED constant current driver module.
- Can be used to diy a solar power controller.
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Display input voltage & current. |
Display output voltage & current. |
Display input voltage & power. |
Display output voltage & power. |
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| DROK 12A Buck Converter | DROK 5A Buck Converter | DROK 4A Boost Buck Converter | DROK 3A Buck Converter | DROK 4.5A Buck Converter | DROK 12A Buck Converter | |
| Input Voltage | DC 5.3-32V | DC 6-32V | DC 5.5-30V | DC 5-23V | DC 6.5-36V | DC 10-65V |
| Output Voltage | DC 1.2-32V | DC 1.5-32V | DC 0.5-30V | DC 0.01-18V | DC 1.2-32V | DC 0-60V |
| Max Current | 12A | 5A | 4A | 3A | 4.5A | 12A |
| CC/CV mode | ✓ | ✓ | ✓ | - | ✓ | ✓ |
| Display | LCD | LCD | LCD | LCD | LCD | LED |
| Case | ✓ | ✓ | ✓ | ✓ | ✓ | - |
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Customer reviews
Had this long review going off on the item but it's not worth it. I'll just say plain and simple tm this item sucks. The first one was defective couldn't adjust the volts or the amps and the secund one couldn't adjust the amps. And I tried everything, with and without a load turning it 300 times then setting it. I'm guessing it's hot and miss. You either get a good unit or a bad one. This item is the epitemy of Chinese crud. They make some good stuff for cheap but bit do they make crud also.
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Top reviews from the United States
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Reviewed in the United States on July 2, 2022
I bought to manually top-off charge my broken Jackery Explorer 1000. (It has a BMS that takes 25.2V) and charge other Lithium things.
Quirks/Gotchas:
1) It's pretty inefficient. I set my output to 25V 1A (25W). For round numbers, I turned the input up until input current was also 1A, so 31V@1A input gave me 25V@1A output. 31W in, 25w out. That's only 80% efficient.
2) At only 80% efficiency, it heats up to an alarming 70C within minutes and was still climbing. While I wouldn't mind just the silicon and heatsink getting that hot, the heat spreads to the capacitors, potentiometer, even the plastic box gets warm dissipating that extra 6W. Surely that kind of heat can't be good for the aluminum capacitors. I do love the cute little DIY case, but I'll probably remove the side panels so it can cool a little better
3) if you limit your input voltage/current (say 15V, 1A) and have 25V 1A as your output, it'll pull the input voltage down so far that'll it'll simply shutdown. That's a little disappointing, since you have to cut input power and/or press the output toggle button to get your output alive again. It'd be nice if there was a best effort attempt (e.g. instead of shutting down, give me that 15w instead of 0). It would be neat to be abl to use this as a solar charge controller. Similarly, some sort of auto restart after input brownout would be nice.
Overall it's a neat product, dirt cheap, and this hobbyist will keep it around for some random projects, but 35W (even 25W) is a bit much for it.
Size: Buck Boost 5.5-30V to 0.5-30V 4AVerified Purchase
Neat, but Not terribly efficient, gets real hot, real quick at 25W
By Nelson on July 1, 2022
Neat little enclosure, LCD screen, easy to assemble and use and dirt cheap.By Nelson on July 1, 2022
I bought to manually top-off charge my broken Jackery Explorer 1000. (It has a BMS that takes 25.2V) and charge other Lithium things.
Quirks/Gotchas:
1) It's pretty inefficient. I set my output to 25V 1A (25W). For round numbers, I turned the input up until input current was also 1A, so 31V@1A input gave me 25V@1A output. 31W in, 25w out. That's only 80% efficient.
2) At only 80% efficiency, it heats up to an alarming 70C within minutes and was still climbing. While I wouldn't mind just the silicon and heatsink getting that hot, the heat spreads to the capacitors, potentiometer, even the plastic box gets warm dissipating that extra 6W. Surely that kind of heat can't be good for the aluminum capacitors. I do love the cute little DIY case, but I'll probably remove the side panels so it can cool a little better
3) if you limit your input voltage/current (say 15V, 1A) and have 25V 1A as your output, it'll pull the input voltage down so far that'll it'll simply shutdown. That's a little disappointing, since you have to cut input power and/or press the output toggle button to get your output alive again. It'd be nice if there was a best effort attempt (e.g. instead of shutting down, give me that 15w instead of 0). It would be neat to be abl to use this as a solar charge controller. Similarly, some sort of auto restart after input brownout would be nice.
Overall it's a neat product, dirt cheap, and this hobbyist will keep it around for some random projects, but 35W (even 25W) is a bit much for it.
Images in this review
Reviewed in the United States on August 30, 2022
Size: Buck Boost 5.5-30V to 0.5-30V 4AVerified Purchase
Reviewed in the United States on September 14, 2022
Size: Buck Boost 5.5-30V to 0.5-30V 4AVerified Purchase
Reviewed in the United States on September 6, 2022
Size: Buck 5.3-32V to 1.2-32V 12AVerified Purchase
Reviewed in the United States on September 4, 2022
Size: Buck Boost 5.5-30V to 0.5-30V 4AVerified Purchase
Reviewed in the United States on July 3, 2022
-My item was sent with 3M 9448A adhesive on the aluminum heatsink. This adhesive is not thermally conductive. I looked up the data sheet on 3M's website and the only thing it mentions is a high adhesion rate at higher temperatures with a resistance to higher voltage. That's great and all, but I'm pretty sure acrylic adhesives are thermally insulating, achieving the polar opposite of what a heatsink is designed for.
-Input and output terminals are very loose, twisting when I tried to unscrew the conductor clamps.
Pros:
-Cheap and it works. ┐(ﾟ～ﾟ)┌
-After removing the "thermal adhesive", it really is a decent little heatsink for what I paid for the whole unit.
-Voltage stays steady when tested against a voltmeter @ 12-24V
-Strong acrylic face plates
Overall, the quality of this DC converter is decent. Most of it is well put together with clean soldering. Some leftover rosin on the board cleans up easily. The faux pas of the 3M heatsink literally made me face-palm, but with the very low load of the small fans I am running there isn't really a need for a heatsink. I drilled 4 holes in the acrylic top plate and threaded 3x10mm machine screws through to compress the heatsink against some thermal compound, which seems to be holding up just fine.
I wouldn't hesitate to get another one if I ever need it, but I have to take some stars off for those flaws.
Size: Buck Boost 5.5-30V to 0.5-30V 4AVerified Purchase
Check your heatsink adhesive
By Mia Y. on July 3, 2022
Cons:By Mia Y. on July 3, 2022
-My item was sent with 3M 9448A adhesive on the aluminum heatsink. This adhesive is not thermally conductive. I looked up the data sheet on 3M's website and the only thing it mentions is a high adhesion rate at higher temperatures with a resistance to higher voltage. That's great and all, but I'm pretty sure acrylic adhesives are thermally insulating, achieving the polar opposite of what a heatsink is designed for.
-Input and output terminals are very loose, twisting when I tried to unscrew the conductor clamps.
Pros:
-Cheap and it works. ┐(ﾟ～ﾟ)┌
-After removing the "thermal adhesive", it really is a decent little heatsink for what I paid for the whole unit.
-Voltage stays steady when tested against a voltmeter @ 12-24V
-Strong acrylic face plates
Overall, the quality of this DC converter is decent. Most of it is well put together with clean soldering. Some leftover rosin on the board cleans up easily. The faux pas of the 3M heatsink literally made me face-palm, but with the very low load of the small fans I am running there isn't really a need for a heatsink. I drilled 4 holes in the acrylic top plate and threaded 3x10mm machine screws through to compress the heatsink against some thermal compound, which seems to be holding up just fine.
I wouldn't hesitate to get another one if I ever need it, but I have to take some stars off for those flaws.
Images in this review
Top reviews from other countries
Marc G.
instable input/output short at power-on (warning) and offset meter
Reviewed in Canada on May 5, 2019Size: Buck 5.3-32V to 1.2-32V 12AVerified Purchase
Amazon Customer
excellant product
Reviewed in Canada on June 16, 2022Size: Buck 5.3-32V to 1.2-32V 12AVerified Purchase
Bugstan
Compact Cost Effective Converter
Reviewed in Canada on April 28, 2019Size: Buck 5.3-32V to 1.2-32V 12AVerified Purchase
Tim Scurry
Some quality issues but does the job
Reviewed in Canada on September 4, 2020Size: Buck 5.3-32V to 1.2-32V 12AVerified Purchase
Amazon Customer
It does what it's supposed to do
Reviewed in Canada on February 12, 2019Size: Buck 5.3-32V to 1.2-32V 12AVerified Purchase
