TalentCell Mini UPS Uninterrupted Power Supply 27000mAh 97.2Wh Lithium ion Backup Battery Pack with DC 12V/9V and 18W USB-A/USB-C PD Output for Router/Modem/LED Light, CCTV Camera, Smartphone and more

I have wanted a way to keep my internet on during power outages for the security system to transmit alarms for about a decade. I was looking at possibly buying a small standby UPS which would have provided about 1 hour of backup time for around the same price as this product. I knew I had about 33watts at 120v when searching. I measured each of my 5 devices(Modem, Router/Gateway, Switch, AP, Smart Home Gateway) at DC and found they only consumed 14watts. That means the rest of the 19watts of power was wasted due to heat in the inefficient 5-1A power adapters. I also knew that it was all going to be less than 2A at 12V so this product would work. It actually comes out to be about 1.2A. Installation is easy and makes sense because now I only have 1 power supply VS 5 supplies. I have 3-12V devices, 1-9V device and a 48v POE injector. I am still waiting on a 12V to 48V DC-DC boost converter to be delivered so it has not been connected, but should work fine once it arrives. I decided to do a discharge test to verify the watt-hour rating and see if the supply could recover from a discharge. I disconnected the 12.6V in and connected a volt meter to the input jack. The input jack is directly connected to the cells so you can measure cell voltage regardless of the on/off switch position. As noted above I only had 4 of 5 devices connected for a total load of 10.5watts. The cell voltage started at 12.6v. I noticed that early in the test, about 1.25 hours, it went from 4 lights to 3 lights indicating only 75% charge remaining. The cell voltage was at 11.9v. It had only discharged just over 10.5watt-hours. The test continued for 3 hours without change and the voltage was still at 11.5v. At the 4.5hr mark the cell voltage finally reached 11.1v where I believe the 50% charge point should have been, but the 75% charge light remained on. With 10.5watts at 4.5hours it had discharged 47.25watt-hours which is also about half of the 98watt-hour capacity. At the 5 hour mark the cell voltage was 11.0v. Finally at the 5hour and 25min mark the cell voltage dropped to 10.9v and the 75% light started to flicker marking only 50% charge remaining. I then stopped the test since I did not want to too deeply discharge the battery or stress my electronics with under voltage. So one of my observations was the LEDs are really just a quick reference for if it is fully charged or partially discharged. I think whoever designed it might have not understood the nonlinear state of charge for a li-ion battery. It may be that they only had the option to design the LEDs to operate at 11.9v,10.9v, 9.9v, 8.9v with Zener diodes because that was all that was available. I don't know but it is something good to know during use. So 4 lights is around 100% to 85% and 3 lights is 85% to 40%. I did not test any further. I think 5 and half hours of backup is excellent and if I continued it looks like it would have continues past 8 hours before dropping to 9v. I don't think I will need it that long. If I have a long power outage I will run a generator. At least if I am away from the house the internet will continue to run during a power outage. Any security related messages can be passed. The other aspect I love about this is I now have less power adapters and the overall power consumption has dropped by consolidating power adapters. The power savings will pay for this device after about 4.5 years.

I love these little UPS units so much that I've already bought two of them, and I'll definitely get more when I expand my setup further. In the past, I've only dealt with bulky lead-acid based traditional UPS systems, which are big and heavy. This little battery pack (lithium ion) is a game-changer—it's incredibly small and compact yet packs a serious punch with multiple DC outputs (12V, 9V) plus USB-A and USB-C PD (up to 18W). No AC outlet, sure, but for DC-powered gear like routers, modems, switches, and mini-PCs, it's perfect. One unit is currently keeping my mini-PC running OPNsense, a TP-Link BE11000 access point, and the ISP's fiber ONT powered through outages—no hiccups, and it holds up for hours. The second one is handling multiple multi-gig managed switches, a Raspberry Pi, and an old Google Wifi unit in another part of the house. Both have breezed through real power outages without dropping connections, giving me plenty of time to ride out short blackouts or safely shut things down if needed. The build is solid—black rectangular metal-ish case that's easy to tuck away, with clear LED indicators for battery level and a simple on/off switch. Charging is straightforward, and it recharges reasonably quickly when power returns. If you're tired of giant UPS boxes and just need reliable backup for low-power network gear, cameras, LED lights, or similar, this is an awesome, portable solution. Highly recommend—worth every penny, and I'll keep buying them as my home lab grows. 5 stars!

Jan 26th, 2026: I have been using this for about a month now. I have lost power more than 10 times, and it has worked as expected. I have not been able to test it for long periods of time, but so far it has met my expectations. I will keep you updated in a few months. I love how the internet keeps working when I lose power :-D Updated April 14th, 2026: I was curious to see how long it would last, so I decided to go for the test. I only use it to back up my internet router, which powers an old phone connected to it. It lasted 24 hours and 18 minutes before it shut down. Really happy with the purchase.

The good: You get 12 x 18650 cells hardwired in a box. It provides power for a very long time. The bad: You don't see the battery level (or any indication of dead cells) unless you unplug the power supply. Also there is no indicator when the power supply is not connected or not providing power. My initial test when I first got the UPS showed very good results. It powered my cable modem, router and voip box for almost a full day. Incident 1: Accidental removal of the power supply was only discovered by a hard shutdown of everything after the batteries had run flat. Incident 2: During a power outage everything shut down. Since it was past the warranty period, I decided to take it apart for analysis. 12 18650 lithium cells wired with 4 cells parallel and the resulting three packs managed by a standard 3S 6A battery management board and connect back to the main board at 12V. The battery management board (see pic) had a visible fault with resistor R9 showing a bad solder connection. Not sure if that was the root cause of the problems or fallout. I took the cells out of the packs and 11 cells were completely dead not taking a charge. 1 cell showed ~3V and was rechargeable. Bottom line: I like the efficiency of this system doing away with a bunch of separate power supplies. I don't like that the cells are not removable. Putting in battery holders would have made the box a little bigger, but would have given the option of replacing cells when needed. Separate power and battery LEDs on the front of the box would make this system a lot more useful.

Let me start with the problem that when I received the unit it had smudges, also the paint looked old. I know that you have to resell returned units but at least use a wiping cloth. I decided to give it a try even knowing it was not a new unit and following the experience with anything with batteries I leave it charging for the whole night without load. After a day or receiving it I connected 4 appliances (network appliances technically). 1. A Verizon FIOS ont/router, 2. An Asus router, 3. A WD NAS, 4. A raspberry pi. The first 3 were connected via the dc cables and the pi via the usb. Everything worked fine for the first so I leave it connected overnight. My wife complained in the morning that the internet was down. That’s when I remembered that the no break was recently plugged. To my surprise the batterie was depleted, it was not delivering enough power to the router to be able to turn on so apparently it entered in a reboot loop and it damaged the contents of the nvram, in other words, it messed up all the configuration. Fortunately for me the NAS didn’t even turn on so it didn’t get damaged. I had to do a factory reset on the router to fix it. The price was low compared what could have lost (my NAS). The problem was easy to diagnose, my 4 appliances consumes more power than is able to recharge. With time the power was too low that everything shut down. The idea is very good but definitely the execution is not good. ( I added some photos, the one with my hand is when I received it and you can see the smudges, the other 3 where at time of the incident, the router in a reboot loop and the no break turned on and without any charge left) TL;DR I connected 4 common devices and the battery depleted unable to turn on again. It soft-damaged my asus router. Don’t buy it, the idea is good but it’s not ready for prime time

So happy I ran across this product. I was thinking I'd have to buy 2 battery backups for 2 devices right next to each other which would have been messy and more expensive. Instead, I get one box with room to grow. I needed "pass through" battery back-up for a fiber optic ONT (modem) and a Ubiquiti Edge Router Lite. Didn't want to buy some huge, heavy, expensive lead acid battery UPS designed to keep a computer or server running. I'm just trying to keep the network gear up. The box works as I'd hoped. When I shut off power to it, the modem and the router keep on chugging and the network stays up. I haven't had a chance to test how long they keep running, but our outages don't usually last too long and I'll be happy with whatever I get. Seems very well built. Only complaint is that it didn't come with adapters for different DC power plug sizes. It only came with 2 5.5mm x 2.1mm male to male DC power cables plus a "splitter" cable that was also 5.5mmx2.1. I ended up needing a 1.31mm cable for one of my devices. Happily I also bought a "TalentCell Lithium ion Battery Pack NB7102" (for the USB-C power output) and that did come with adapters and a 1.31mm cable too. I trusted other reviewers positive reviews on Talentcell for quality. Didn't run any test myself but both boxes do seem well made. I'm guessing I'm one of the first buyers and couldn't be happier with it. I'm guessing they'll figure out the power cable and adapter thing eventually.

Most stable UPS i’ve ever owned. BTW: call it 50 parts superstition / 50 parts Electrician, but i NEVER use more than 2 devices per UPS. Ie: (1) 12v & (1) 9v or (1) 12v & (1) USBc, etc. the bad reviews I’ve read seem come from people trying to use every single port& pull more power through the device than its designed to handle. Its a great fit & value if you understand your paying for backup on at most a single router & like a single security camera or something. As of this review date, it’s the only one of its size ive found that sends more than 5v through its built in usbC which is FANTASTIC & modern.

Did not work great for my use case. My AT&T Wi-Fi router is not happy with this device, and if I try to also power the OTP box (needed to maintain internet) it barely works, and once the UPS battery drains even a little, the AT&T Wi-Fi bugs out. The unit also seems to drop the voltage steadily as it dies, which again causes my AT&T Box to bug out and need to be hard reset before it works again. Overall, didn't work well for my use case, overall seems like a compelling package if it works for yours, however. It could be the AT&T box is just overly picky about its power source.

Li he utilizado hasta 20 horas solo alimentando al módem y funciona perfecto

Very satisfied by this UPS, provides ample power for routers and a Cellular Repeater/Booster. Make sure to verify your hardware does not use more than 1 Amp @ 12 Volts (which is relatively low, most routers require more). The 9V output is rated at 2 Amp, which is a little better (18W). The USB ports provide [email protected].

Pros: worked great and provided 20 hours of backup for a router Cons: lasted only 18 months before dying completely after only a few power failures. The mfg ended up replacing the unit for me. Very satisfied of how they resolved the issue.

He usado varias veces, la pila me da 4-6 horas con mi módem

Excellent idea and implementation. Good craftmanship, looks and feels very solid. I have 4 devices attached to it that together draw about 1A of current. When fully charged the output voltage is 12.3V, so I'm not seeing what others have mentioned. I'm using only the 12V outputs, so I thought of permanently disconnecting the 9V and 5V outputs, but when I measured the current they use I changed my mind. It was only 2.2 mA, which is nothing. This means the mini UPS is really well designed. Very happy with my purchase. Update Oct 2024: after 4 years of service my unit died unexpectedly 😫. It does not provide power when the mains AC is unavailable despite the LEDs indicating its charged. Very disappointed...