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!

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 times 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

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.

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

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

Hasta el momento me ha funcionado bien. Lo he probado por 2 horas y sin problema.

NO LO RECOMIENDO. ESTAFA. Dejó de cargar después de un año. Mala calidad. Pretenden que es un UPS pero en realidad es un banco de 12 celdas de litio 18650, un BMS 4P 3S y unos puertos de salida 5V, 9V y 12V, no hay circuitos separados para la carga, la descarga y la salida.

Es un excelente ups para routers, telefonos y otros dispositivos que requieran alimentación de 12V. Me gustó lo pequeño ya que ocupa muy poco espacio. Hasta ahora ha funcionado perfectamente y espero que siga así en toda su vida util a la que fue diseñada.