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

Over 8hr battery life and pays for itself after 4.5 years
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.

Avoid
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

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

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.

Los cables son cortos, pero fuera de eso, funciona bien