APC Back-UPS Connect – CP12036LI – 12V DC 36W Lithium-Ion
APC Back-UPS Connect – CP12036LI – 12V DC 36W Lithium-Ion Mini UPS, designed for Routers, Smart Home Controllers, VoIP devices, Networking gear and more
Power buttonPowers up the device
” data-position=”triggerHorizontal” />Output wireConnect this attached wire to your 12V networking device
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How long do the Back-UPS Connect Lithium-ion batteries last?
The Lithium-Ion batteries used in Back-UPS Connect can last 8 to 10 years or 3000
charge/discharge cycles. Valve Regulated Lead
Acid (VRLA) batteries typically last 3 to 5 years or 200 discharge cycles.
Is the Lithium-ion battery in my Back-UPS Connect replaceable?
No, the battery in the Back-UPS Connect is not replaceable .
How do I know if the Back-UPS Connect will work with my networking device?
The Back-UPS Connect is designed for devices with voltage rating of 12V and current rating of 3A or less. The Back-UPS Connect comes with a default DC tip of size 2.5mm but can be converted to 2.1mm or 1.7mm using the additional DC tips from the box.
What is the typical runtime provided by the Back-UPS Connect?
The Back-UPS Connect can provide up to 4 hours of runtime for a typical router.
Uitstekende UPS ok bijvoorbeeld de glasvezelverbinding online te houden bij stroomuitval.
Fa il suo dovere.
Rispetta tutte le specifiche indicate nell’inserzione. Comodi gli adattatori per le varie tipologie di modem/router.
La ricarica richiede molto tempo, in quanto l’alimentazione elettrica proviene dallo stesso alimentatore che alimenta il modem/router, e durante il funzionamento del modem/router evidentemente l’energia che rimane disponibile per la ricarica molto limitata (viene “consumata” quasi tutta dal dispositivo)
In pratica, se manca la corrente e la batteria interna arriva quasi all’esaurimento, non sar possibile permettersi un’altra mancanza di corrente, se non dopo molte e molte ore di regolare alimentazione.
Produit ideal pour protéger sa boix internet des micros coupures
Simple d’utilisation et avec les deux “normes” des prises d’alimentation ronde des BOX alimentes en 12V .
Elle est trs simple mettre en uvre et fonctionne trs bien. Selon sa BOX ou son routeur (moi je l’utilise pour un extender Wifi) elle tiens autour d’une heure sans alimentation.
De belle qualit, elle n’a rien a voir avec les produits quivalents arrivs directement de chine…
J’ai supprim une toile car elle n’est pas rglable (12 V uniquement) elle ne peut donc pas fonctionner avec les BOX ou router en 5V (prise USB-C).
Works very well, but only at 12V outpu
I use this device as backup power for my glassfiber converter.
And it works perfectly
I could connect it easily with one of the extra adapters.
The size is very small, weight is low. Which makes it easy to install.
I put it on a small shelf.
It takes long before the device is fully charged.
What is missing:
1) Screw holes or a mount that allows you to mount it on the wall
The only way I could put it on the wall, is by using a shelf
2) What is missing that you can have several output voltages.
I initially wanted to use this for my media converters, and they are 9V and can not handle 12V they stop working.
Other brands like Eaton do have different output voltages
3) It has a fixed 230V power cable. In case you need a longer (or shorter) you can not replace it
For me not a problem. Compared to other brands they all have a cable you can replace
Erfüllt meine Erwartungen.
Ich habe die APC-Mini-USV zur Absicherung meiner Firtz!Box gekauft. Die USV soll lediglich kurze Stromausflle berbrcken und das klappt ohne Probleme.
Die USV passt auf Grund ihrer kompakten Baugre ohne Probleme in meine Multimedia-Unterputzverteilung.
Von mir gibt es eine klare Kaufempfhelung.
Excellente protection pour les petits appareils électroniques !
Sa conception compacte le rend facile placer n’importe o dans la maison, et sa batterie au lithium-ion garantit une alimentation de secours fiable en cas de coupure de courant.
Avec une puissance de 36 W, il est idal pour protger des appareils tels que les routeurs, les modems, les camras de scurit et d’autres petits dispositifs lectroniques.
L’installation tait simple et rapide, et l’appareil est dot de ports de sortie pratiques pour brancher facilement les quipements.
C’est un investissement qui en vaut vraiment la peine pour assurer la scurit et la continuit de fonctionnement de vos quipements.
Excellent, so long as you only have one device needing back-up power supply
Designed for keeping networking devices active in the event of a power failure this little device is well made, and has the assurance of coming from a decent, recognised manufacturer. It is nicely compact in size, and uses the original 12V supply cable to the supported device to power this one. There is another cable built into the UPS which then connects into the supported device, and two other sizes of connector are supplied in case the standard one doesn’t fit.
It works very well, and has the capacity to supply power for longer than it’s likely to be needed. The actual time depends on the amount of power needed by the supported device. That does not actually have to be a router or other network device, and instead it could be any other 12V device so long as it isn’t power-hungry. In my own case I still have to use a separate modem as well as the router, so with two devices I’d need two of these UPS (uninterruptable power supply) to keep the system working properly, and that’s impractical as well as double the cost. Maybe a future design improvement would allow for situations like mine.
It does work 😃
Perfect use when electric fails, it is easy to connect and easy to use, gave it a test and it worked for about 3 hours, more than sufficient for any temporary blackout so it will do the job .
Great backup power optio
If you experience regular power cuts or just want to have a backup power supply for something like your router, this device is a great choice. It has an incredibly simple setup and comes with small selection of DC tips to ensure it can fit a range of devices.
The device itself is quite compact and easy to tuck away if needed, so it won’t take up a huge space. Once set up, simply turn the device on using the power button and the indicator light will turn on, which shows the battery level in 4 stages.
While we don’t experience frequent power supply issues, it’s handy to have a backup for any important devices, particularly if you work from home or rely on steady connections for any reason. We’re in the process of switching over suppliers due to the poor connectivity with our current so it’s likely this will be the backup for the new LEO internet device we’re getting, and with up to 4 hours of power, it’s a great addition to any techie household.
My only gripe is the price, coming in at around 66 (at time of review). For what is effectively a power bank, I don’t think this should cost as much as it does. However, what you’re paying for is reliability and the brand, so it’s a case of needs versus want on this occasion.
Nifty little device
Back up device
A useful back up device for your routers, smart home controllers and more, meaning if you had a power cut, your devices would still stay connected for a period of time for you, so there’s less inconvenience caused and your networking is still powered through outages! I got this for my router, as I work from home and need the back up if it ever came to it.
This is a nice and modernly designed little device. It’s not too large, so it takes up no space at all. You have different connections to use, making it more versatile. It seems well made and durable.
It is rechargeable, altogether this takes around 12 hours. It can give a back up time of 240 minutes at 5W, 200 minutes at 6W and 60 minutes at 20W, which is quite good for a little device.
I think this could be really beneficial at times and it seems well made, so I would recommend it. Not bad for the price.
Ordered this recently, and got to me super quick. Took less than 5 minutes to set up and with my Orange Livebox I didn't need to use either pin adaptor. Appears to be working just fine after a few hours. Will have to test the battery later once its fully charged but I bought this to be a set it and forget it set up. Really Like the APC Schneider brand, they have great products! Overall very pleased with my purchase
Ordered this recently, and got to me super quick. Took less than 5 minutes to set up and with my Orange Livebox I didn’t need to use either pin adaptor. Appears to be working just fine after a few hours. Will have to test the battery later once its fully charged but I bought this to be a set it and forget it set up. Really Like the APC Schneider brand, they have great products! Overall very pleased with my purchase
Simple, straightforward, brilliant!
This APC UPS arrived exactly as described and works brilliantly. It is very easy to set up, and while testing I didn’t notice any disruption between switching the router from mains to UPS power only.
Inside the box, aside from the instructions, there is several optional power connectors included (that you may need to use depending on the router you have).
I managed to get several hours of continuous power from the unit, without any drop-outs, when running my router from directly from the UPS (with mains power removed). APC’s documentation suggests it should last about four hours for most routers, but this will vary based on a variety of factors. After about two and a half hours of testing, the battery indicator on my unit was still above 50%.
Unfortunately, while a number of APC’s UPS units have user removable batteries, this unit is not one of them. To get the battery replaced you will likely need to contact APC directly (this may not be a concern for some people).
I live in an area where we have periodic power cuts, especially during winter, so I’m very glad we now have this for days when the weather is a bit more unpredictable!
This is pretty much plug and play for a typical Australian NBN HFC Modem. You just put this between your existing power adapter and the modem – the standard plug size is 2.5mm barrel type DC connector – but they include two other size options if you need them. Installs in seconds and just works. I tested a full charge and got 90 minutes of use on my modem before it reached 1/2 power remaining – I would guess it could run the modem close to 3 hours. Why not 5 stars? because the price is too high by 2x. This little DC UPS costs more than a 4 plug AC UPS which granted is far less efficient and makes a bunch of heat, but the AC UPS can serve many devices. So you only want one of these if for some reason you don’t want a standard AC UPS – in my application I have a small enclosed network shelf in a closet and it heats up too much with an AC UPS in it – so I bought this. If they cost half as much I’d buy more and use them for routers, security devices, etc. I paid 113 AUD, and got it within 2 days free delivery.
Plug in and forge
Great for any home with a lot of power interruptions, even a momentary power cut will cut off internet and when we all starting to work from home it is not a lot of money to have this device which is just a plug in and forget insurance.
However, for me this is only half the battle as I have a fiber internet where we have a fiber router and another WiFi router and using a split 12v cable this will not run both reliably and also it would be about the same price for a Larger capacity emergency power bank either with AC outlet of 12V outlet or both.
Reliable and Well Made UPS
If you have a low-power device which you don’t want to go down if your power goes out, this UPS is a great little device.
It is very well made and quite compact so you can easily put it next to your device such as a router and is very handy so you can ensure you have an internet connection for a few hours if there is a power outage which can be essential if you need wifi for work.
It seems to work well and be quite reliable. Overall, I would recommend it.
Great for routers, and so many other installations...
A ‘fit-and-forget’ addon for your router, and actually many more possibilities where a power cut could cause REAL problems.
I will indeed be fitting this (or another one) to my router as-and-when the time comes for the switch-off of the aging land-line system, but until then it will be used as power backup for a 12V (low power) water pump, part of a setup which monitors water levels and switches on when needed to prevent overflow. It’s absolutely ideal for this, and will take away a real concern of a power cut during rainfall. Not talking gallons here, but a possible 1 or 2 litres over an hour period. Not a lot, but enough to spoil your day if it happens. There’s enough power in the battery to easily cover a 12-hour period with no mains power.
The box itself is well made, great quality and from an established brand. If it performs well for my ‘temporary’ job, I’ll just get another one for the router when necessary.
On a quality/value-for-money basis… 5-Stars.
Could you keep internet in a power cut with a mobile hotspot?
I’ve had a UPS for my desktop PC for many years. We get at least one power cut a year. They may not last long, but having your PC turn off in the middle of something is a recipe for lost work. (Fortunately improvements in file systems mean that corrupted discs aren’t so much the problem they used to be!)
But if your router is in a different room to the PC, it can’t share the UPS. This enables a router that wants 12V power to keep going for a couple of hours.
It’s mostly useful if you have a UPS for desktop PC or you’re using a laptop, as phones would be able to use mobile data..
.. and you could very probably use a phone to provide a wifi hotspot for that PC or laptop.
If that’s you, you need to consider whether around sixty quid is too much to keep your router online.
Nifty device to have, with a couple of caveats.
I think this is a really clever device to have, and its really close to being perfect within its field.
The package contains the UPS unit, and a set of adaptor plugs to connect it.
In essence, the device is a UPS designed to keep your router running in the event of a power cut. You connect the device between the router and the routers power supply, and the built in battery and circuit keeps power flowing to your router when mains power fails. Its almost an install and forget level of simplicity in using the device, although the documentation is a clear and concise, and explains what the device is doing through the status of its lights.
In use, the UPS does a great job of keeping my wifi on when I lose power. Although power cuts are quite rare, there have been too many times when something else has happened and the router lost power. For example, times when a circuit breaker gets tripped, or the big bane of my life where someone unplugs the router by accident (even though I have labelled the plug, it still happens too often for my liking). In these situations the router stays on and my network stays up. Its also been great for maintaining the network with power gitches so that my laptops dont lose connection when transferring files between them.
The UPS is designed for 12V devices, and although this covers most network routers, I would have given it five stars if it worked with 5V devices too. I have a Wavlink router (one of the two that make up my home network), and that uses a 5V supply so this UPS is not suitable for use with it.
Overall, this is a great way of keeping your 12V routers and other devices working when the power goes.
A Powerhouse in Miniature: A Five-Star Triumph for Tech Enthusiasts
Having recently acquired the APC Back-UPS Connect – CP12036LI, I am thoroughly impressed by its performance and utility. This 12V DC, 36W Lithium-Ion Mini UPS is a compact yet robust solution designed to support a range of devices such as Routers, Smart Home Controllers, VoIP devices, and Networking gear. Including three different DC tips is a thoughtful addition, ensuring compatibility with various gadgets. What stands out most is its ability to provide up to 4 hours of runtime, a particularly beneficial feature. The LED indicators are a handy feature, offering immediate insight into the UPS status and battery capacity, adding a layer of convenience and efficiency to its use.
My personal experience with this mini UPS has been exceptionally positive. I initially ordered it, intending to integrate it into a small water feature project on my balcony as the warmer months approach. To my delight, it exceeded my expectations, keeping my router operational for over three hours during testing. This level of reliability and performance is why I have no hesitation in awarding this product a perfect five-star rating. It’s not just a UPS; it’s a lifeline for your essential tech, ensuring connectivity and control remain uninterrupted. For anyone looking to safeguard their technology with a dependable power backup solution, the APC Back-UPS Connect – CP12036LI comes highly recommended by a satisfied user.
Almost there
I have tried this out with a few pieces of kit but quickly ran into its limitations, these no doubt come from targeting this powerbank at a specific market.
For a start, you don’t get a plug. This of course keeps the price down, what you get instead is instructions to find your own powerbrick and a series of adaptors. If your device uses something other than these connectors, good luck.
You also don’t get a choice of output voltage, many of the devices I would have liked to use this with run from a 5V input or provide PoE to downstream devices and such run from a 48V power supply.
Providing that all you need is 12V and you have the right combination of adaptors this “just works”.
I used it to run the pictured ethernet switch for four hours and then charged it back up again overnight.
This could be a handy little gap filler for something like a WiFi AP or a VOIP phone.
However, for anything other than 12V centre positive; USB charger, power bank, USB C PD cables.
Yes, that solution is more of a “roll your own” UPS solution but given that APC are asking you to provide your own 12V input… so is this.
Great for powercuts I can keep online with this powering my modem for my laptop
I don’t often get power cuts so to test this I flipped off the main switch and sure enough my modem stayed on which combined with my laptop left me able to work, this is such a good precautionary piece of tech if your work is important and it passed my basic test with flying colours.
A must have for the upcoming digital voice changeover in the UK.
This is a must have for the coming changes in the UK where all phones will come over your broadband line. In the box is everything you need for nearly all routers that use a 12V power adaptor. The Battery box (UPS) is small and compact with minimal user interaction needed . The only thing is a button to push to power on/off and 4 lights to show the battery charge level. If your in an area that experiences power cuts frequently this is great to keep online while everyone else around you is offline and would be great for keeping the kids connected too. The build quality is as you would expect from APC (schneider electric) premium soft touch plastic (not rubber importantly) and the weight is just right where it isn’t going to flap around on the side by the router. The only thing that would improve this and is something to take note is that the input and outputs are on the sides so hiding the cables will be a challenge if its on show.
Da sempre il marchio APC sinonimo di qualit e garanzia nel mondo dell’e-commerce, ma conosciuto maggiormente per la produzione di UPS casalinghi e industriali che hanno fatto la differenza negli ultimi decenni. Non da meno il CP12036LI, un piccolo gruppo di continuit concepito per alimentare apparecchiature con un assorbimento massimo di 36 Watt. Beninteso, non un inverter ad onda sinusoidale o a doppia conversione, ma semplicemente un’unit di backup a 12 Volt che pu mantenere l’alimentazione in assenza di corrente elettrica per almeno 4 ore.
Il cuore del CP12036LI una batteria agli Ioni di Litio da 3 Ampere in grado di erogare quasi 28 Watt di potenza e di garantire alcune ore di funzionamento a piccoli dispositivi come Modem, Router, Switch di rete, Telecamere e sistemi elettronici alimentati a 12 Volt. L’autonomia dell’UPS dipende ovviamente dall’assorbimento elettrico a cui il dispositivo collegato. Sulla base delle indicazioni della casa madre possiamo considerare che a 5 Watt si hanno circa 240 minuti di backup, mentre a 36 Watt l’autonomia si riduce pi o meno a 30 minuti.
Prima di collegare il CP12036LI importante verificare la potenza elettrica dell’apparecchiatura che si intende alimentare. Non possibile infatti collegare un portatile o una console di gioco che hanno tensioni e amperaggi completamente diversi. Inoltre fate attenzione a collegare alcuni Switch di rete che hanno gli stessi connettori d’ingresso della 12 Volt, ma in realt funzionano a 5 Volt. Il rischio quello di bruciare entrambi i circuiti.
Fatta questa doverosa premessa, possiamo passare al collegamento vero e proprio utilizzando il cavo di uscita dall’UPS che termina con il connettore maschio da 2,5 mm, cio il cavo che fornisce i 12 Volt durante il blackout. Dalla parte opposta si trova l’ingresso femmina a cui deve essere collegato l’alimentatore originale dell’apparecchiatura che, per forza di cose, deve avere la stessa tensione in uscita di 12 Volt. L’UPS si accende automaticamente non appena si collega l’apparecchiatura, altrimenti possibile usare l’apposito pulsante di accensione. Utile la presenza di quattro LED che indicano lo stato di funzionamento della batteria e lampeggiano quando questa sotto carica. Nelle mie prove ho utilizzato un Box multimediale con tensione adeguata e con lo stesso tipo di cablaggio. Considerando l’assorbimento della circuitazione e la presenza di un hard disk meccanico al suo interno, il risultato stato pi che lodevole con un’autonomia misurata di circa 20 minuti in assenza di corrente.
Nel complesso, il CP12036LI fa quello che promette garantendo il funzionamento costante di apparecchiature in caso di blackout. l’ideale per alimentare il Modem durante l’interruzione di corrente causata da temporali o guasti, ma compatibile anche con altri dispositivi grazie alla presenza di adattatori forniti nella confezione. Il prezzo non particolarmente contenuto, ma dobbiamo considerare che si tratta di un prodotto di grande affidabilit e dal brand consolidato.
PRO
– Compatto e affidabile
– Potenza erogata 36 Watt
– Batteria ricaricabile da 3 Ampere
– Autonomia massima 4 ore
CONTRO
– Solo per apparecchiature a 12 Volt
– Prezzo sopra la media
Helpful device
+ slim and light
+ small, so you can take it anywhere
+ easy to use
+ different shapes for different connectors
+ will power majority of your devices
+ nice, bright color
– would be great if it had USB C too
Grea
What is it? Essentially it is a small unit that sits inline on your router power supply and kicks in during power cuts to protect your wifi. I suffer periodic cuts when home working which can be really frustrating. This device has removed the frustration. It has only been required for a 20 minute stint so far, but it worked admirably. It reckons up to 4 hours, hopefully I will not need to put that to the test. Easy to set up, unobtrusive, absolutely essential. 5 stars.
Needs more adapter plugs
Price at review: 64.96
This is the ideal product if you need your router to stay on during a power cut. As landlines are all going to require to go via the router in the future this is essential if you need your landline to keep working, for example if it is used with an alarm system or if you don’t have a mobile.
For broadband you can keep your router on and accessing the internet through wifi via laptops and mobile phones during a power outage. That is what this product is intended for.
I was excited to try this out as APC is a well known high quality brand where they have done all the proper safety checks and have been in this business for years. They know how to make an uninterruptable power supply.
Unfortunately with a virgin hub 5 the power supply connector didn’t fit the power-in on the UPS and didn’t fit any of the four provided size adapters which they give you incase your plug doesn’t fit.
This is really weird because the UPS output plug fits the virgin hub fine without any adapter and the output plug also fits the input. I even tried a few other adapters I had and none of them fitted the virgin hub 5 plug. It would not go in to any of them.
For many people this would make the product unworkable for this type of router even though it is the required 12 volt power supply type. I happen to have other very similar 12 volt power supplies spare and so I was able to put one of these in to service to power the UPS but I’m sure this isn’t exactly recommended way to do things.
Everything seems to be working okay now and I can tell you that the router worked perfectly fine when it was just running off the battery and no power supply was connected so that is all good.
Worth mentioning also is that it appears to be completely silent when in use which many other UPS are not.
Awesome dedicated 12v UPS.
This dedicated 12volt UPS from APC is an amazing piece of kit if you need piece of mind that your smaller device will remain powered in the event of an outage. The device can power devices running at 12v up to 3amps, therefore a max of 36watts in total.
The UPS sits in series between the original power supply and the device it is now supporting. The included selection of Barrel Jack adapters should allow for the correct fitting of most devices & their power supplies so hopefully you’ll be up and running in a matter of minutes.
I’m currently using my UPS for my internet router, but am actually thinking a better use would be for my small NAS device as sudden power failure on that device could damage the hard drives. That’s the beauty of this APC unit – it’s super portable and can be redeployed to another device with ease.
A great little device is you’re looking for a dedicated 12v UPS.
very functional, small and light, long runtime. None of the DC adaptor tips fit my route
PROS
-very functional power backup system
-small and unobtrusive
-li-ion battery (not your typical UPS lead-acid battery)
-huge run-time (in my case, this UPS can power my particular router for up to 2 hours)
CONS
-none of the DC adaptor tips fit the centre pole of my router (which was strange, as the router’s power DC connector connected directly to the input port on this UPS). Luckily, in my “man-drawer”, I have an eclectic collection of various DC tip adaptors, and one of them fit.
-initial charging took way longer than I thought it would
-no audible warning of power loss (just a blinking LED)
-a little bit pricey
NOTES
-I have 3 UPS’s in my office, and my computers, drives and one of my monitors are all protected against power loss to my building, but my router is in a different room, and I was reluctant to purchase a typical lead-acid UPS for just this device (even though it’s a key device in my daily working life). But this little UPS is ideal for its intended use, and I’m very glad to have it.
MY STAR RATINGS:
1* substandard, mostly cons
2** barely acceptable, cons outweigh the pros
3*** meets the basic requirements, cons balance the pros
4**** good product, pros outweigh the cons
5***** exceptional, all (or almost all) pros
A great little UPS
I have used this on my broadband router. It was easy to install. Simply unplugged the power supply from the router and plugged it into the UPS. This powered it up instantly. Then plugged the cable from the UPS into the router. It comes with adapters to make sure all power socket types are covered. But I did not need the adapters. It connected perfectly and powered the router straight away. My daughter accidentally switched off the router power and this UPS kept it going for about 4 hours. Great if there is a power cut so the internet stays running at least.
A great choice for protecting essential low-wattage electronics from power interruptions
This APC mini UPS is a lifesaver for my smart home! It keeps my router, smart speaker, and other devices running during power outages, preventing frustrating disconnections.
The 12v DC output works perfectly with all my devices, and the 4-hour runtime gives me ample time to troubleshoot any power issues. The LED indicators are clear and helpful, showing me the UPS status and battery level. It’s also compact and quiet, fitting neatly beside my router without taking up much space.
A great choice for protecting essential low-wattage electronics from power interruptions.
Compact and nea
Sleek, compact in-line UPS. 12V 4.1A INPUT 3.0A OUTPUT power supply with 4x optional adapters.
Hopefully the connectors are suitable for your device.
Basically a DC Voltage power bank to keep your router or any small devices running in times of outages, particularly on voip calls. Deals with brown outs and spikes also.
Ideal in my case when electrical works were carried out that require a shut down from the panel for a short period . The advertised 4hr operation is based on supplying 5W devices. You’ll get 60 mins if consuming 20W in total. The unit also has an array of lights that are steady or blinking depending of its status.
A decent brand. although you can shop around for good deals.
Other than the Eaton3s mini, this Schneider APC CP12036Li is the only other widely recognised make of mini DC UPS being sold on Amazon and as such its a welcome addition to a market place full of transient clone-like products from short lived suppliers. With the planned withdrawal of the UK PSTN by the end of 2025 and the ongoing switchover to VoiP many more people will come to recognise the value in adding a battery backup to their routers. Given the importance of product safety when relying upon li-ion cells, its good to see a few established UPS manufacturers offering these small domestic products. The UPS doesn’t come with an AC/DC adapter its assumed that it will be connected in-line with the one already powering the router etc. The guidance indicates the UPS can deliver 3A/36W.
With around 22Wh of tested usable capacity this UPS should run a typical domestic router for between 2 and 3 hours, most routers seem to use between 6-10Watts. In the event of an extended power cut the device has a simple soft On/Off button, allowing it to be shutdown and restarted as needed. There is no audible warning to indicate an input power failure, the On/Off button just has an LED which flashes to indicate the UPS is discharging its battery.
The battery max recharging current is <400mA, which means the AC/DC adaptor you use has to have around 5W of headroom to safely supply the UPS and the device it normally plugs into. The documentation doesn't make this point clearly enough in my view. If in doubt about how many Watts you router is really using then it makes sense to measure it and then decide if the existing AC/DC adapter is up to the small additional load.
The unit itself is a solid performer with good voltage regulation across the discharge cycle and across different load. The output voltage held steady at 11.2Volts even @3amps.
One observation is that APC used to sell a much larger capacity version of a similarly styled UPS; I still use a CP12142LI and nearly 5 years on it is still protecting my gateway router from regular power cuts; sadly they stopped making it a few years back. This new mini UPS is a good solution which could have been better if they had kept some of the features in the previous model, specifically capacity, audible warning, wall mounts. The price is also on the slightly high side, but you are paying for the name and all the safety, certification that goes with it.