Enter the battery backup, or "uninterruptible power supply" (UPS). These small, affordable power units act as a power source for your sensitive electronics in case of a power outage. But will they keep your WiFi running long enough, and if so, do they all perform the same? To answer that question, I Contact online >>
Enter the battery backup, or "uninterruptible power supply" (UPS). These small, affordable power units act as a power source for your sensitive electronics in case of a power outage. But will they keep your WiFi running long enough, and if so, do they all perform the same? To answer that question, I put these three units to the test.
With five outlets on battery backup and 10 in total, this UPS can keep a Wi-Fi network running for up to four hours, or it can power your home-office setup long enough for you to save your...
But no one solution''s perfect for everyone. To help you narrow those choices, we''ve compiled a list of the five best battery backups currently available. Best overall: CyberPower...
Our pick for the best UPS overall goes to the APC BR1500G Backup Battery. At 1500VA/865W, it can power most devices, including computers, external hard drives, and wireless routers, from a few minutes to several hours, depending on the total connected load.
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This has become a recurring issue In the telecom world, there are often situations where long runtime (1, 2, 5, or even 10 or more hours) would be required or ideal. In many cases this is a safety issue as phones can be a lifeline in industrial environments.
When you run a typical sizing enquiry, many tools - like APC for example) will recommend a 1000VA UPS, and will claim that it should provide 500+ minutes for a 100Watt load (the load might be less than this - a POE switch for a half dozen phones could be as little as 60 watts).
Unfortunately in practice the UPS often shuts down exhausted after an hour or so.
One of my thoughts was to consider replacing the standard lead acid batteries with something better suited for long / deep discharge as long as the charge current handling characteristics would be similar to a lead acid battery this might work?
Does anyone have any specific experience or recommendations?
Generators are NOT an option - in some cases these systems are in industrial environments - even if they are in office environments, the idea of running a generator for 100W of power is totally impractical. Central generation is not possible as there normally is no practical way to isolate / dedicate the power to the POE switches which are often distributed to locations close to the phones.
Any ideas / suggestions / discussion / experience welcome.
For my home server (mostly file server, some services) I''ve been using a Cyber Power PR1500LCD UPS, I can confirm that at 120watt load it will run for a little more than 3 hours, which surprised me because like you I''ve become accustomed to vastly under performing UPS systems from folks like APC (used to be my go-to brand honestly).
They have larger models as well, up to 3K I know so I believe you''d be able to get 6 hours or more at 100watts load, I''d recommend checking out their higher end UPS systems.
You''re correct that "standard" lead-acid batteries (whether liquid acid or gelled electrolyte) are not meant for long-cycle and deep discharge. Although some marketing guy runs the discharge curve out to 2098, adding batteries is really a solution for capacity, not run-time.
The phone company (traditionally) was the model for battery operation. Using open-frame 48V acid batteries, the phone company provided its own power, independent of the grid. (Well, there really wasn''t a grid then, either.) It''s a solution that''s worked for centuries.
You can purchase items that area called "DC generators." What they really are is the DC-to-AC part of a UPS. You provide the DC batteries and it provides the part that converts it to AC. (It''s typically just a DC-powered multi-vibrator connected to a step-up transformer and filtering mechanism.)
[In the WWII days, these were actually mechanical vibrators (picture a relay clicking on and off repeatedly at 60 or 400 cycles per second.) The "chopped" DC was a sort of AC and could then be sent to transformers to change to the 200+ volts needed for tube equipment like radios.]
We have some remote radio sites that use these DC generators. We provide the banks of deep-discharge (marine) batteries and the chargers.
Put together an AC-to-DC convert, a battery, and a DC-to-AC inverter and you have a full-time real sinewave UPS. You can buy these from UPS companies if you want small ones. For large ones, you design your own and buy the components.
You won''t find a lot of SMB guys familiar with this type of setup. That doesn''t mean they''re not in use nearly everywhere that power is important.
Thanks Dataless sounds like a great direction to investigate.
Naomi? Craig? Any thoughts?
I''m ideally looking for something simple. If we have to do a battery upgrade I''m ok with that - we regularly customize larger APC units with aftermarket batteries to extend their useful life - I don''t see there would be any problem with doing something similar with a cyberpower if the stock battery doesn''t work. But Dataless is suggesting there are models that might.
I''ve had good experience in general with Cyberpower as well (like you Dataless I made the change with frustration in APC performance and having a new option in distribution) - but would appreciate some specifics on estimating runtime on low power situations and also estimating how they will fall off as the batteries age, etc.
This seems to be a situation we see frequently - and considering APC (which has the name recognition) doesn''t really seem to deliver in this sort of situation, it might be a niche worthy of documenting. We''d be happy to do some testing and likely have some industrial clients who would find the results interesting and reference worthy as well.
In larger installs the phones are often fed by fiber or long cat5/6 runs to a distribution POE switch which is too low power and too far removed from other equipment to be easily connected to generator. DC rails are no longer an option in this sort of situation as most POE switches dont'' support them anymore (there were some older Cisco''s with that capability but most have been end-of-lifed and were often over priced for what they delivered).
A nice whitepaper on a solution that works for extended runtime on poe switch power solutions might garner a lot of interest.
Any thoughts? As mentioned, happy to help test / document the solution.
Hey Mitch, I''m not sure if you''ve looked at UPS models where you can add battery packs. Here''s the Eaton 5PX 5PX100RT, for example.
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