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The SKE DC20000 Plus Altair is a compact, portable mini UPS featuring a robust 20,000mAh lithium-ion battery designed to keep routers, modems, and smart devices running during power outages. It offers versatile 5V, 9V, and 12V DC outputs alongside USB-A and USB-C ports, ensuring broad device compatibility. With built-in Automatic Voltage Regulation and surge protection, it delivers stable power, while bright LED indicators provide clear battery status. Its slim design and wall-mount capability make it ideal for home, office, or travel use, empowering uninterrupted connectivity wherever you go.





| ASIN | B0CQR5GMN4 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #34 in Computer Uninterruptible Power Supply Units |
| Customer Reviews | 4.2 4.2 out of 5 stars (299) |
| Date First Available | December 21, 2023 |
| Item Weight | 1.43 pounds |
| Item model number | 20000mAh |
| Manufacturer | SKE SMART KEY ENERGY |
| Product Dimensions | 4.2 x 8.1 x 1.3 inches |
D**E
Will work for powering an Echo Pop/Dot 12V system. Also Tempest Weather station.
I'm totally blind. I got this to help power my Tempest weather station when the power goes out. I have an UPS system for the Router and Wi-Fi access point. So this will keep the weather station online when the power goes out for some time. How long; I truely don't know. I would hope for a day or so. Just a little about this being I didn't find this on the Amazon page. The ports when you have them facing you with the Figure 8 power cord on the right. The Far Left plug is an barrel connecter 5V. Going to the Right is the 9V barrel connecter, Then an USB A Female port, USB C Female port and lastly an 12V barrel connecter that is to the Left of the main power connection. Now at least for me! One thing that I didn't find is no one said that this also can be wall mounted to a wall with either the ports up towards the ceiling or down towards the floor. For me, this is a major plus. The other two Mini UPS systems do not have this ability that I've have. This for me is better than some of the other small UPS LI systems. Why I say that is you need to press and hold the power button to turn it off and on. The other one that I use for the Modem, All you need to do is to give it a quick tap! Oops didn't mean to turn the ISP modem off. So for me, this is better. Now for grins! I was wondering if I could use this to power an Alexa Dot/Pop, being it does have a 12V barrel output! I thought it would work; So I gave it a try. I use one of the adaptors in the box that plugged into the echo and plugged the other end into the 12V output on the Mini UPS! Turned on the UPS and look at that! I was able to use the Echo with no issues. Please keep in mind, the Echo must be one of the Dot's, Echo Pop or one of the others that take an 12V input. Tested with an Echo 3rd gen dot, 4th gen dot and an Echo Pop. I didn't run the volume over volume 6 so cannot say if this would have any issues if you have the dot set to volume 10. I also cannot say how long this would power the Echo dot/pop being that will depend on the volume you have the Echo device set to. This will not power the Echo 4th gen with premium sound, 2nd Gen plus, 3rd gen cylinder as well as a lot of the Echo show product line. Totally different power requirements. This would also be true for the Echo Dot Max.
R**R
Solid feeling, heavy, seems well designed
Came with an almost full charge, just a few minutes on the mains to get the 100% light turned on. Feels solidly build. Has USB-C and USB-A power connection as well as barrel outlets for 5v and 12v DC, an incudes the right cables for those kind of connections. Straight power cord without "a wall wart because the AC->DC conversions happening in the device itself. Running a test right now to see how long it can keep our network up in case of an outage. WIll come back in several hours or tomorrow I I find anything interesting/good/bad on that score. EDIT TO ADD - left my router on the UPS for 8 hours without drawing down the battery. That was good enough for me, I didn't test all the way to failure, it was still up when I plugged it back in. The router's wall wart is 12v/2a but I doubt it pulls 24w full time. YMMV, but this exceeded my expectations. As a side note, the multiple LED charge status indicators on the UPS are BRIGHT. Didn't need flip on the closet lights when I went to check on it. Don't use it in a sleeping area or near anyone who hates the color green.
S**G
Small and lightweight.
I love the size and weight of this unit. It is perfect for my needs Make sure that it is powerful enough for you. Ask Rufus.
M**S
Connecting cords don’t fit ATT Gateway Modem
Power cords do not fit my AT&T modem. The barrels are too small. I’m hoping the seller will contact me with a way to get a different power cord before I ship it back.
J**8
You Might Not Get the Cable That You Need
I bought it to back up my Internet service provider gateway (12v 3A) but none of the cables supplied fit my device. I'll have to find a third-party cable or adapter. Otherwise, it's nice. I'm backing up an ethernet switch and TV antenna amplifier as well as my Tablo. When my power goes out, it rarely goes out for more than an hour and often just a minute or two. This will keep my ISP gateway from taking five minutes to reboot.
J**D
Neat product
Great solution for low voltage appliances. I connected my Google router to the 12v output and the fiber media converter to the USB A. The total power consumption was 12W so the ups/battery should last for 10-11 hours in the event of a power failure. This is a more efficient than a conventional UPS and an elegant solution!
M**A
It keeps my modem running for 8 hours and 20 minutes.
I had a power outage today, but I was still able to use my Wi-Fi for more than 8 hours. I originally bought it so I could keep working during outages since I work from home, but today I ended up enjoying my Sunday watching Netflix and some soccer games on TV.
J**N
Wonderful Product
I have this connected to a Fiber Optic modem and a T P Link router. I got almost 6 hours of run time with my test. This is 1000% better than the old Cyber Power UPS with a lead acid battery. I think this is a wonderful product and it is a quarter of the size of a traditional UPS. Also does not put out the heat of a traditional UPS.
M**O
Encaja a la perfección con su descripción. Hace su función cuando se va la luz. (Durante bastante tiempo)
R**S
Excellente alimentation de secours. L'appareil ne coupe pas l'alimentation des appareils connectés en cas de panne et de rétablissement du réseau 220 V. Ainsi, les appareils qui ne redémarrent pas après une coupure de courant 220 V continuent de fonctionner normalement. Excellent.
C**O
Un 25 porciento de la pila, le dió casi 2 hrs de trabajo a mi modem wifi de 20 watts , excelente producto
D**L
Die USV ist eigentlich rundum recht gut gelungen mal abgesehen von den LEDs, die ich viel zu hell finde. Gut finde ich, dass ein Signal gegeben wird beim Stromausfall und wenn USV fast leer ist. Das Signal geht auch nach 2 Minuten automatisch aus und nervt somit nicht durchgehend
P**B
I picked up the SKE Mini UPS (UK version, 20,000mAh) to keep my EE Smart Hub Plus router running during power cuts, and it’s turned out to be one of those gadgets you don’t realise you need until you have it. Setup was effortless: plug in the DC cable, choose the right voltage (5V/9V/12V - mine was 12V for the EE Smart Hub Plus), and it just works. The pass‑through charging means it stays topped up without any faff. What impressed me most is how seamless the switchover is. When the mains drops, the router doesn’t even blink—no reboot, no lost connection. For anyone working from home or relying on smart home devices, that alone makes it worth it. The battery capacity is solid too; it kept my router running for several hours during a recent test. Build quality feels reassuring, the LED indicators are clear, and having USB‑C alongside the DC outputs makes it more flexible than many alternatives. It’s compact enough to tuck behind the router without adding clutter, and it runs silently. If you want a reliable, affordable mini‑UPS to keep your internet alive during power cuts, this one is absolutely up to the job. It’s already earned its place in my setup.
Trustpilot
4 days ago
1 month ago