logo elektroda
logo elektroda
X
logo elektroda

Uninterruptible power supply for modem/router - which one to buy?

m5000 10143 15
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 19515508
    m5000
    Level 8  
    Posts: 38
    I'm going to buy an uninterruptible power supply, but I only need it to keep my modem/router powered. I have a laptop that has its own battery, so no problem here. I live in the countryside and there are frequent power outages, often very short, e.g. they turn off for a few seconds, turn on, turn off, etc. This is often the case during thunderstorms. Either way, I need a power adapter to keep my modem/router running so my internet connection doesn't drop. Besides, I'm afraid that this type of switching off and on can break the equipment.
    However, I don't know what uninterruptible power supply would be best for a modem/router - online, offline, line-interactive? And why?
    Can anyone suggest a specific model?

    I repeat once again, it's not about maintaining the power supply of the entire computer and monitor, but only the modem / router.

    greetings
  • ADVERTISEMENT
  • #2 19515511
    Krzysztof Kamienski
    Level 43  
    Posts: 21875
    Help: 2030
    Rate: 5130
    m5000 wrote:
    only the modem/router.
    Which is powered by what voltage? 9VDC? All you need is a suitable battery as a buffer. For example, 12 V / 10 Ah, a step down converter for 9 VDC and some charger for it. :D
  • #3 19515544
    m.jastrzebski
    Network and Internet specialist
    Posts: 5238
    Help: 679
    Rate: 862
    m5000 wrote:
    I'm going to buy an uninterruptible power supply, but I only need it to keep my modem/router powered. I have a laptop that has its own battery, so no problem here. I live in the countryside and there are frequent power outages, often very short, e.g. they turn off for a few seconds, turn on, turn off, etc. This is often the case during thunderstorms. Either way, I need a power adapter to keep my modem/router running so my internet connection doesn't drop. Besides, I'm afraid that this type of switching off and on can break the equipment.
    However, I don't know what uninterruptible power supply would be best for a modem/router - online, offline, line-interactive? And why?
    Can anyone suggest a specific model?

    I repeat once again, it's not about maintaining the power supply of the entire computer and monitor, but only the modem / router.

    greetings
    a buffer power supply would be best. Least losses. Cheaply. What voltage does the router need?
  • ADVERTISEMENT
  • #4 19515547
    DiZMar
    Level 43  
    Posts: 32223
    Help: 2869
    Rate: 6511
    It's best to buy a small uninterruptible power supply, the so-called UPS. You connect it to the network and the router's power supply to it and you have maintenance-free continuous power supply of the router switched automatically. Combining with a battery, converter and switching is nonsense. I do not know why colleagues ask about the power supply voltage of the router. It is known that from the mains through the power supply. In addition, the advantage of the UPS is the ability to simultaneously use the emergency power supply for other devices powered from the mains, e.g. a telephone charger. The disadvantage is the durability of the battery placed in it, which must be replaced every 5 years. However, this is a problem with virtually every emergency power solution

    Added after 10 [minutes]:

    In the search box on the sales portal, enter UPS and select. Simple, efficient and cost about PLN 100.
  • #5 19515556
    m.jastrzebski
    Network and Internet specialist
    Posts: 5238
    Help: 679
    Rate: 862
    DiZMar wrote:
    It's best to buy a small uninterruptible power supply, the so-called UPS. You connect it to the network and the router's power supply to it and you have maintenance-free continuous power supply of the router switched automatically. Combining with a battery, converter and switching is nonsense. I do not know why colleagues ask about the power supply voltage of the router. It is known that from the mains through the power supply. In addition, the advantage of the UPS is the possibility of simultaneous use of emergency power supply for other devices powered from the mains, e.g. a telephone charger. The disadvantage is the durability of the battery placed in it, which must be replaced every 5 years. However, this is a problem with virtually every emergency power solution

    Have you ever sat in a room like this? Which in the described situation will se notoriously "pop" when switching? You throw it away after a week. In a buffered power supply you have silent switching and zero transfer time. You can buy a power supply in a housing for PLN 100, plus a battery. On Allegro, there are even inventions for PLN 50 for finger batteries for the router, too much. The condition is the power supply voltage of the router, around 12V. The author clearly wrote that he is only interested in supporting the router. It seems that he wrote it fully consciously.
  • #6 19515563
    DiZMar
    Level 43  
    Posts: 32223
    Help: 2869
    Rate: 6511
    I work next to such a power supply all the time and it doesn't pop. It only pops when the power goes out, which doesn't happen all the time. I don't know why you say he's going to be a pain in the ass. Secondly, the author probably does not live next to the router.

    Added after 15 [minutes]:

    Do not exaggerate with the described situation and constant puffing. Was ZE throwing them a disco?
  • ADVERTISEMENT
  • #7 19515573
    vieleicht
    Level 37  
    Posts: 2163
    Help: 463
    Rate: 453
    I suggest you try to use something like in the picture, if the power outages are not long-lasting. When buying remotely, you can return it in a few days if it does not meet expectations. Of course, the questions about the supply voltage were justified, because such a device should be selected according to the parameters of the router.
    Advantages: quiet, relatively cheap for a UPS, and replacing the battery, e.g. once a year or two, about PLN 30 (with a good battery brand).
    Uninterruptible power supply for modem/router - which one to buy?
  • #8 19515574
    m.jastrzebski
    Network and Internet specialist
    Posts: 5238
    Help: 679
    Rate: 862
    DiZMar wrote:

    Do not exaggerate with the described situation and constant puffing. Was ZE throwing them a disco?

    Read carefully what the author wrote:

    "I live in the countryside and there are frequent power outages, often very short, e.g. they turn off for a few seconds, turn on, turn off, etc. This is often the case during thunderstorms."

    House in the countryside. Silence peace. I can hear the relays from the technical room downstairs.
  • #9 19515647
    Anonymous
    Level 1  
  • #10 19515666
    DiZMar
    Level 43  
    Posts: 32223
    Help: 2869
    Rate: 6511
    m.jastrzebski wrote:
    DiZMar wrote:

    Do not exaggerate with the described situation and constant puffing. Was ZE throwing them a disco?

    Read carefully what the author wrote:

    "I live in the countryside and there are frequent power outages, often very short, e.g. they turn off for a few seconds, turn on, turn off, etc. This is often the case during thunderstorms."

    House in the countryside. Silence peace. I can hear the relays from the technical room downstairs.

    So they have a free disco served by ZE. That's what you interpreted. During a thunderstorm, it is at the moment of an atmospheric discharge much louder than a "pop" and usually the noise of wind and rain also incomparably louder than switching the UPS. I don't hear it when I switch to the battery. The return switching is a bit audible, but not enough to disturb the neighboring rooms.
    vieleicht wrote:
    I suggest you try to use something like in the picture, if the power outages are not long-lasting. When buying remotely, you can return it in a few days if it does not meet expectations. Of course, the questions about the supply voltage were justified, because such a device should be selected according to the parameters of the router.
    Advantages: quiet, relatively cheap for a UPS, and replacing the battery, e.g. once a year or two, about PLN 30 (with a good battery brand).
    Uninterruptible power supply for modem/router - which one to buy?

    For this price, you can buy a specific 230/230V UPS with a battery inside and use it without any combination with the possibility of using it for other devices. A good brand is to replace the battery after more than 5 years. Weak approx. 3 years. Of course, it is worth noting that it should be with a "cold start".
    The choice, of course, belongs to the author of the topic. We have indicated only our subjective opinions.
  • #11 19515794
    m5000
    Level 8  
    Posts: 38
    Thank you for your opinion.

    Exactly, it's about the tp-link Archer MR400 - AC1200 Wireless Dual Band 4G LTE Router.

    As for the supply voltage, I honestly don't know, but I found something like this on the tp-link website for this model:

    External Power Supply: 12V/1A

    Added after 4 [minutes]:

    I will add and make it clear that I am NOT talking about the power supply on which I would work on this modem for a long period of time. It is simply about protection against sudden power cuts/switches. The point is that the router does not turn off suddenly and that I can figure out what the situation is for the next few minutes - whether to turn off the equipment and wait, or whether I can continue working, because it has calmed down.
  • #12 19515816
    Anonymous
    Level 1  
  • ADVERTISEMENT
  • #13 19515906
    m5000
    Level 8  
    Posts: 38
    And this Buffered PSU above for PLN 103 would be good for my router? There in the picture it says 12V/2.1A, and this router of mine seems to be 12V/1A. Would that work well? Nothing would burn?
  • #14 19515925
    DiZMar
    Level 43  
    Posts: 32223
    Help: 2869
    Rate: 6511
    m5000 wrote:
    And this Buffered PSU above for PLN 103 would be good for my router? There in the picture it says 12V/2.1A, and this router of mine seems to be 12V/1A. Would that work well? Nothing would burn?

    Of course, nothing will happen. The power supply can always be of a higher current efficiency (A). If it had a lower current efficiency, it wouldn't necessarily be suitable. Voltage compatibility (V) is important and must be the same.
  • #15 20394891
    kriss032
    Level 21  
    Posts: 624
    Help: 2
    Rate: 81
    m500 is enough for you. I bought a UPS for PLN 66 for a fiber optic router, it's not a miracle. The router passes the exam, it consumes 4.5 watts, the working time to discharge 4 batteries is 55 minutes. I used 4 nickel batteries 1.2 V, capacity 4 x 2600 mAh. I also ordered another, more capacious UPS. Lithium batteries 10,000 mAh for cameras. The important thing is that when the power is turned on by the ZE light, the cameras do not like it, they can be damaged. It is enough for the UPS to give a few minutes of work. Will test it after receiving the parcel
  • #16 20408675
    kriss032
    Level 21  
    Posts: 624
    Help: 2
    Rate: 81
    Returning to the previous topic, I added 4 more AA batteries in parallel, the working time increased to 2.5 hours

Topic summary

✨ The discussion revolves around selecting an uninterruptible power supply (UPS) specifically for a modem/router, particularly in areas with frequent short power outages. Users suggest that a small UPS is the most effective solution, providing maintenance-free continuous power and the ability to connect additional devices. The importance of matching the UPS to the router's voltage and current requirements is emphasized, with recommendations for both buffered power supplies and UPS systems. The TP-Link Archer MR400 router, which requires a 12V/1A power supply, is mentioned, and users confirm that a higher current rating (e.g., 12V/2.1A) is acceptable. The discussion also touches on the durability of UPS batteries and the potential for noise during switching, with some users advocating for buffered power supplies to avoid audible disruptions.
Generated by the language model.

FAQ

TL;DR: For keeping a router online, use a small UPS or 12 V buffered supply; a 4.5 W router ran 55 minutes on 4×AA, and "It is enough for the UPS to give a few minutes of work." [Elektroda, kriss032, post #20394891]

Why it matters: This helps home and rural users avoid dropouts during brief blackouts and protect gear from rapid power cycling.

Quick Facts

What’s the simplest way to keep my router online during short outages?

Use either a small AC UPS or a 12 V buffered DC supply. "Both solutions will meet your expectations." Pick based on convenience and how quiet you want switching to be. Keep wiring simple and match your router’s voltage. [Elektroda, Anonymous, post #19515816]

Is a 12 V / 2.1 A power supply safe for a 12 V / 1 A router?

Yes. The router only draws the current it needs. "The power supply can always be of a higher current efficiency (A)." Just ensure the voltage matches at 12 V. [Elektroda, DiZMar, post #19515925]

Why pick a buffered 12 V supply instead of a UPS for a router?

Buffered supplies switch with zero transfer time and stay silent. That avoids audible relay clicks during frequent short outages. You can buy a small buffered unit and add a battery. Ensure your router uses around 12 V. [Elektroda, m.jastrzebski, post #19515556]

Will a UPS click or pop when the power blips?

Some units click or "pop" on each switch. In quiet homes, frequent blips can be annoying. Users report hearing the relays even from another room. If silence matters, consider a buffered DC supply. [Elektroda, m.jastrzebski, post #19515556]

Can a low‑power router make a UPS turn itself off?

Yes. Certain UPS models have a minimum load threshold. With very low demand, they may power down after a few minutes to save energy. Check model specs for minimum load. [Elektroda, Anonymous, post #19515647]

Which UPS features should I look for to support a router?

Get a unit with "cold start." It can start from the battery with no mains present. That lets you boot the router even during a full outage. It also simplifies testing. [Elektroda, DiZMar, post #19515666]

How long will a small battery pack keep a router running?

Real‑world result: a 4.5 W router ran about 55 minutes on four 1.2 V 2600 mAh AA cells. That setup used an inexpensive UPS (~PLN 66). "It is enough for the UPS to give a few minutes of work." [Elektroda, kriss032, post #20394891]

How do I set up a simple DC‑buffered power source for a router?

  1. Use a 12 V battery (e.g., 10 Ah) and a suitable charger.
  2. If your router needs a different DC voltage, add a step‑down converter.
  3. Wire battery → converter → router, and keep the battery on charge as a buffer. [Elektroda, Krzysztof Kamienski, post #19515511]

What power adapter does the TP‑Link Archer MR400 need?

The Archer MR400 requires an external 12 V DC, 1 A adapter. Match polarity and plug size when choosing alternatives. This keeps the device within its rated spec. [Elektroda, m5000, post #19515794]

How often should I replace a small UPS battery?

Plan to replace the internal battery about every five years. That’s typical for small units and part of normal maintenance. Budget for periodic replacements. [Elektroda, DiZMar, post #19515547]

Can frequent power cycling during storms damage equipment?

Yes. Rapid on/off cycles can stress sensitive electronics. One user noted that "cameras do not like it, they can be damaged" on sudden restores. A UPS buffering a few minutes can help. [Elektroda, kriss032, post #20394891]

Can a UPS power other devices while it keeps my router online?

Yes. A small UPS can also support other mains devices, like a phone charger. That adds flexibility during outages without extra gear. [Elektroda, DiZMar, post #19515547]

Will adding more AA cells increase runtime for a DC UPS?

Yes. Adding four more AA cells in parallel extended runtime to about 2.5 hours in testing. Ensure safe wiring and matching cells when expanding capacity. [Elektroda, kriss032, post #20408675]

Do I need an online (double‑conversion) UPS for my router?

No. For short outages, a basic UPS or a buffered 12 V supply is enough. "Both solutions will meet your expectations." Choose based on features and noise preferences. [Elektroda, Anonymous, post #19515816]
Generated by the language model.
ADVERTISEMENT