Belker 12W Universal 3V 4.5V 5V 6V 7.5V 9V 12V AC DC Adapter Power Supply for Household Electronics Router Speaker Smart Phone Tablet CCTV IP Camera - 1A 1000mA Amp Max.

Was recently cleaning up in a storage room and came across some old audio equipment. The main item was an Onkyo minidisc player. The charger for the unit was nowhere to be found. SaW this item and thought, why not... Worked PREFECTLY!! 100% satisified, 5-star rating!! Item arrived on time and in excellent condition!!

I used it to power my 3v lights on my train layout. So far it works great!!

Good design.All voltages are slightly higher than shown, but not bad.Comes with a little screwdriver to change voltages, BUT small dark print is hard to read.

Universal Fit, covers almost all the different applications

Very happy with my purchase great price and product highly recommended.

I bought this to replace a Ryobi 4V screwdriver charger. I liked the assortment of pin adapters and the tiny screwdriver to change the voltage setting. But I was surprised that the D-shape of the adapter sleeves only let you use plug them in in one polarity. I needed reverse polarity and had to push and deform the adapter into the main plug to get it to seat. So the reverse polarity worked fine but I didn't like that this important feature isn't built in.NOTE: the lack of polarity reversal is listed in the description. But its still odd that its not included as a feature.

I repair and restore "old" electronics, and quite often the things that arrive on my workbench these days are cell phones, laptops, and other small portable devices that are salvaged- pulled from attics, garages, and oftentimes quite literally from the garbage, and as such rarely have compatible power supplies when they reach me. While most modern devices all run on similar voltages and plugs, this is not the case for many older devices. This means I used to have to keep many power supplies on hand to handle their specific requirements. For me this meant a good-sized plastic tub full of mismatched adapters and power supplies for all the various devices I might come across. Then, I finally had a device cross the bench that I didn't have a power supply for- and that's when I found this thing from Belker.It's a wall wart power supply with an LED to tell you it's running, an average-length cable, and a construction quality roughly equal to the average cell phone charger- it's nothing special, but it's not going to fall apart either. It comes with a whole bag of male connectors for a variety of common size plugs, which is handy as you can swap between them pretty easily. Then, the thing's big feature- you can change the power output by turning the dial on the bottom of the supply. It comes with a "key" (though any slotted screwdriver will do the job) to physically set the voltage output- it's stiff enough you will need a tool, so it can't "change" unless you physically do it, which is good. This means I can quickly switch between heads and voltages on one power supply, rather than dig for the right one, or have to spend a bunch of time wiring something together on the workbench. This thing saves time, effort, and for me at least, eliminates one major source of me getting shocked which is a big deal for me. This device specifically filled the role of a much more expensive specialty power supply, so for me at least, the value is considerable that way as well.For me and my needs, this thing is a no-brainer tool. Virtually any small electronic device can be powered up with this thing from small electronics, holiday decorations, toys, tools, and so on. Reducing a whole bin of odds and ends to one device, a bag of it's connector ends- all of which tucks into a drawer is a major improvement to my work space, and work flow going forward. The only way I can see this thing falling short is that it's not rated for larger devices, and while the male plug set that is included is great, it's not exhaustive- this set isn't going to completely replace every niche item, nor a good bench power supply for the things this can't do. But, as a compliment to the aforementioned bench supply, there won't be too much you can't handle from a power perspective.I give this one two big thumbs up!

Testing the voltages with my multimeter, I started at the 3V setting and worked my way up. The voltages weren't exact, but they were close enough for what I needed - until I got to the 6V setting. At 6V, the multimeter read nearly 24V!!!!! I unplugged the unit from the wall and it was hot to touch.I then attempted to check the remaining voltages (if just 6V was bad, I could probably just not use that setting). They didn't work at all until the unit cooled down. The higher voltages where all ok except they were all reading a little low. This may have been normal, or it may have been a result of the 6V issue - there is no way of knowing now. Then retesting the lower voltages, I noticed the power LED was pulsating. When checking them with the multimeter again, they were now fluctuating - 3V was fluctuating between 3.4V and 4.15V. 4.5V wasn't as bad, and 5V was reading pretty steady.Finally, retesting the 6V, it was a little over 21V again, and then the power light shut off and no more voltage could be read on any setting. It is now a brick that does nothing.