SHNITPWR AC Adapter 120W Universal Power Adapter 4V 5V 6V 9V 12V 15V 18V 19V 20V 24V Adjustable Switching Power Supply 100V~240V AC to DC 4V ~ 24V 5A Converter with 14 Tips & Polarity Converter

Need this for testing numerous tablets & notebooks I don't have working power supplies for. It works very well for the 3 I've tried this far. All different connectors and voltage requirements. The connectors seem well made & fit well. Especially love the polarity reversing cable as several I have use the negative center rather than the more standard positive center.

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I'm going to say this first so people see it immediately the small extension they give you with it that looks like it's just to make the cord longer is a reverse polarity adapter don't find out the hard way like some people have. That being said this otherwise is an amazing unit I wish they would put a sticker or something on that adapter to warn people as it is not marked at all. The fact that you can adjust it to any voltage within its range is fantastic for working on small electronics like I do. The plugs that come with it cover a substantial amount of different Electronics. It would also be nice if they added a small expansion set for the few odd ball barrels they don't cover I would even buy it separately. I highly recommend this unit it has saved me a lot of hassle. Another cool thing is that it has a connector with just two wire lead spots to do positive and negative bare wire coming out of it I've used that quite often it's very handy.

As a retired Engineer I have countless small electronic devices and gizmo's that most of which have a (sick) custom power brick and plug.Powering and charging them all while finding outlets for the equally countless chargers takes up lots of time and space. If only there was a better way.Enter this device (and ones like it).Supplied with a generous amount of different tips (and a polarity changer, +universal bare wire block!), simply select the correct tip, dial in the needed voltage and PRESTO - you can ether use (for low power devices) and/or charge your device!I keep one at home and one in the RV (it replaces countless "wall warts").While NO it won't power and charge your high power consuming device at the same time (after all it is only "up to 120W") it is decently compact device with variable voltage output in a decent package at a decent price point.Highly Recommended.

It worked great until it didn't. After a week or so of continuous use at 15v, the plastic on the adapter started melting. We only noticed it after the smell of burning plastic led to some slight smoldering on the carpet.It works as advertised, and the voltage displayed is accurate. Unfortunately, this is not worth your money with the risk of burning your house down. This is not a power supply you can just plug in and forget.

I rarely write reviews. I am making an exception for this product. I bought a used Brother QL-820NWB Label printer that I knew ahead of time was missing the power adapter. I went on Amazon and ordered T POWER Ac Dc Adapter Charger for Brother QL-810W QL820 QL820NWB. When the printer and adapter were delivered the barrel connector on the adapter did not fit the printer. I was definitely upset because the Amazon ad specifically stated that the adapter would work. I didn't want to take a chance for another mistake from a vendor and decided to go with this universal adapter that has a variable voltage. The Shnitpwr AC/DC Adapter is a godsend. My printer required 24 volts and 3.6 amps. The rating for this adapter is 3v to 24volts and max amps of 5. I am happy to know that I now own a power adapter that can easily be used for many devices that I own no matter their power requirements.

I have used this power adapter for a few uses including: running an aquarium pump, charging 12V lead-acid batteries, running a few small circuits, and a few others. The dial is fairly accurate, only .2 volts off from the display at worst (under some types of loads) but it is usually on point. I have only used it for a total of 100 hours, so I cannot guarantee how long it will last, however it has held up very well until now.As far as all the extra connectors are concerned, I honestly never needed them, nor do I use many of them. The only one I used on a regular basis was the one that had a positive and negative lead for wires rather than the circular connectors. This connector after some mistreatment did end up having internal conduction issues resulting in one of the electrodes not working. The power adapter works, but this extra connector stopped working. Given that they look like cheap ad-ons for the sake of a bigger number, its not all that surprising.Overall, given the price I would recommend the adapter. It has a very low baseline power draw unlike the more expensive lab power supplies, meaning it can be used for a long time without worry of overheating or other issues.

Not 3 prong. Only a 2 prong