72W Power Supply Adjustable DC 3V ~ 24V Variable Universal Switching AC/DC Adapter 100V-240V AC to DC Converter with LED Voltage Display and 14 Tips, for 3V to 24V Household Electronics - 3000mA Max

I use this for an LED aquarium light that is on about 12 hours a day. After several months of use, there is no problem with the power supply. It is nice that, if I want to use this power supply for something else, I can change the voltage output quite easily. I checked the output voltage with a volt meter, and it matches what it says on the dial.

This has been great to test and replace some electrical items around the home. Monitor flashing turns out it was a power supply, so didn't have to buy a whole new monitorQuite a few connections that seem pretty decent comparability for most things. Potentiometer seems to be affected by temp a bit, but nothing more than about 0.3v.

This thing should be in very household. If you have many electronic devices like I do, occasionally one stops working or charging. Having a versatile and adjustable power supply is a must for troubleshooting and getting a device going while you order a replacement power supply. It has many connects sizes that should fit almost every need.I will give you one WARNING. The device comes with a six-inch extension output cord that seems to have no use and does not state what it is for. Well, what it does is reverses polarity, so you should never use this unless you are sure your device has the positive power on the outside of the connector, which is very rare. Reversing polarity may fry your device! It's nice they included it, but there should be a big red label affixed to it that states what it does.I dinged it a star because the voltage potentiometer (adjustment knob), is way to sensitive and its hard to set the voltage exactly, There are no detents or click in spots for the voltages so you have to fiddle with it and hope the knob doesn't get bumped to a different voltage during regular use.Other than that, it's a keeper.

Great power supply! I bought 3 extra, powers my laptop, vintage audio decks, 2 way radios, scanners phones.. everything!

This power supply has been reliable for many pieces of electronics for me to test with. The Voltage tends to drift up slightly when it's used for a while, but only on the order of .1 to .2V. My unit does not get very hot, is not noisy (no audible sounds). The size is nice: some may not like that this is of the style with a box in the middle of the cable, but this does mean it doesn't take up a large space on a power strip or outlet to block other available ports.

Perfect for my needs

Thought power converter for a Christmas decoration had quit working, so ordered this one. Very hard to adjust power output, got it close. Apparently decoration has died as it still won't work. About done with you people. Out of the last 6 orders only 1 was as expected, the others were the wrong size, defective, or had no instructions included. The only thing that has worked as expected was the JVC vcr remote control. At least the basic functions work on this, which is better than not at all, which at least makes it useable. I have only ordered from you the last few orders due to where I live, in the middle of nowhere. Used to be convenient, no longer now when the received items are useless. This seems pointless to continue as this is not even close to convenient, and the items were relatively inexpensive making returning them not really worthwhile. The so called fitted spark plug wires I ordered for my 350 Chevrolet engine work as far as making the vehicle run, but now there are spark plug wires strung all over the engine compartment as most of them were way too long. Way too much not as described or no instructions. If you notice future orders are much fewer of not any at least you know why.

I am using this handy power supply for laptops, charging lithium batteries, restoring dead batteries, and generally solving my power supply problems. I cannot review reliability because I only used it one time. I find the voltage control to be precise and steady, unlike other reviewers. I recommend this unit for anyone wanting an inexpensive and adjustable power supply.