12V-2A Uninterruptible Power Supply for MINI UPS Battery Backup Interface with 6000mAh Capacity for Outdoor Cameras and Security

I just wanted an inexpensive 12v battery-backup power supply, so I got this - tbh I wasn't expecting much for the price I paid. It arrived and worked right of the box. I just plugged it in and plugged my router and fiber-optic modem into the power cord with a Y-splitter than I made myself (but they can be purchased cheaply). It works perfectly and is much more efficient than the inverter-type battery-backups that require transformers to produce 12v DC from 120v AC. The unit doesn't even get warm and can supply 2A @ 12v (24w) for several hours if the power goes out.

I star using it and one trouble I found is the connector but luckily I had an adapter and made it work. Make sure the interface is compatible with your device. update the next day: the device stop working. :-(. Take your risk. I bought it and I lost money.

Product came with ZERO printed information—not even a link to an online manual. For example, a red LED is visible when it is plugged into AC. But what exactly does it mean? Does it perhaps turn off or turn green when the battery is fully charged? And what does the "6000 mAh" rating mean? Was it obtained simply by multiplying the rating of each of the cells by 3 (the number of cells)? Since it outputs 12V, a more honest rating might have been 2000 mAh. Points for the low price. But I looked inside, and frankly it's a bit difficult to believe that such a simple circuit has all the claimed features (I'm an electrical engineer). I guess we'll see. I'll revise this review if the manufacturer explains these things satisfactorily. (Hey, send me a schematic!)

Good price, does the job.

Got around to using this outside the return window with a device well within spec plugged in. It worked for two hours then powered off. It now makes a very faint chirping noise if plugged in, like it's trying to start and immediately shutting down over and over. The load was barely anything and the device was very warm after the failure, so I have to assume that it was a component failure. Nothing on the PCB looks damaged so it could be the battery cells. Can't trust it either way, waste of money.

after the 5 months it does not last no event 30 minutes on

I wanted a small UPS dedicated to my ethernet switch (already had one for router in other part of the house) and this fit the bill. The output plug is standard size (check what you have before ordering) and the measured voltage was also good. I don't know how long this will keep the switch running, but it kept the switch running for a couple of minutes when I unplugged the wall outlet. We tend to have short outages, so that should. be just fine. You can see that the output cord is fairly short and that is the only downside. If you want to mount the UPS to the wall, it has to be right next to the device.

If you have power outages this would be a life saver. I have 1 of these for my deco unit. I had a 2hour power outage and it kept my internet on for entire time.

Excellent product

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