Router Battery Backup

So, all you clever people.....

What would be the best to run the following during Loadshedding. Lets say 2.5hours tops. Links would be appreciated

1 PC and 32 in Samsung TC (monitor)
1 Telkom LTE Router
1 laptop...

Thanks
 
tcofran said:
So, all you clever people.....

What would be the best to run the following during Loadshedding. Lets say 2.5hours tops. Links would be appreciated

1 PC and 32 in Samsung TC (monitor)
1 Telkom LTE Router
1 laptop...

Thanks
Click to expand...

Mecer 2400VA Inverter (Community Support)

This Thread is for the Mecer Inverter only. My personal opinion on the unit: Seeing that there are lots of question and in lots if threads, here is my review/input on the Mecer Inverter. Instead of reposting I'll just reference here. I'll add more info soon. This should give you an idea what...
mybroadband.co.za mybroadband.co.za
 
Bump, for anyone seeking good advice on how to keep the interwebz up during our current round of economic growth :)

As an aside, it seems like most entry-level (600-1000VA) UPS units have an artificial limit of around 2 hours runtime. I saw one review on either an RCT or Mecer unit that one person was getting 2 hours runtime on the dot with one router attached, and the same result with two routers, a TV box and a cell charger attached. I think this may be because they state in the product description that it is only meant to provide power until the attached devices can be safely powered down, not as a backup solution.

Do the bigger units also exhibit this behaviour?
 
PUP Backup said:
Get my unit for router power backup. Way more efficient than inverter UPS will ever be and costs less.
It will keep your internet access going for 12 hrs.
Click to expand...
You're going to want to register with the site as a dealer, ASAP.
 
PUP Backup said:
Get my unit for router power backup. Way more efficient than inverter UPS will ever be and costs less.
It will keep your internet access going for 12 hrs.
Click to expand...
I get that, but I have a unique situation where I need 12V, 19V and 24V to power everything - getting all of that out of one sealed system is a huge problem for me
 
PhireSide said:
Do the bigger units also exhibit this behaviour?
Click to expand...

I have never seen this behavior on any sized units. Entirely anecdotal of course.

PUP Backup said:
Way more efficient than inverter UPS will ever be and costs less. It will keep your internet access going for 12 hrs.
Click to expand...

Lets say I already have a UPS. Or that incredible corruption got rid of their stock, and now I have plenty... What would happen if I tap directly into the 12V battery of a UPS? Worst that I can see what would happen is that the UPS charging circuit would kick in and start to feed ~14VDC to the router? DC-DC converter should sort that out.

Other than that, some runtime might be lost to keep the UPS inverter going?
 
Daruk said:
Here you go
www.communica.co.za

PSU CCTV 12VDC 3A

Power Supply Unit with Battery Backup • 12VDC 3A UPS • with Battery Compartment for 7Ah Battery (Battery NOT Included) Overview Features Input voltage can vary from 90VAC to 265VAC without affecting the output voltage. (output voltage remains constant) Input and output fused Short circuit...
www.communica.co.za www.communica.co.za
Add a small gate motor sized battery and you're good to go for hours on your router. Can order the battery from Communica.
Click to expand...
I see that unit only pushes 3A or about 36W by my calculations so I think that should be fine for my B315 and Edgerouter and Unifi AP, but I would need a boost converter to ramp up to 24V for the AP as it uses PoE. And then there is the case of my Intel NUC running my Pi-Hole and Unifi Controller which needs 19V and certainly draws more than 3A under load. Seems my idea isn't going to work so well :confused:

By my estimations I need:

5W for the B315
5W for the EdgeRouter
10W for the Access Point
20W for the NUC
20W for the screen

That is 60W draw, excluding losses which is cutting it fine with the stuff I listed below.

My current shopping list looks like this:

  • CCTV POWERBOX 13,6V 5A W/B CHG R 762.84
    • Combination PSU and battery charger with 5A output ~ 68W
  • BATT 12V26 R 861.35
    • 12V 26Ah battery. I am not sure if the above charger will be sufficient to charge this size battery up?
  • MP121M-4,5MM SLEEVE R10.11 x 4
    • Barrel connectors for the various things that need to be powered
  • DGM DC/DC 600W BOOST 12-80V 10A R225.00 x 2
    • Boost converter to get 19V to power the NUC and LED screen and another to get 24V for the PoE injector
  • Single Port Gigabit Passive PoE Injector R60.00
    • I will have to replace the Unifi PoE injector with one of these, as the Unifi one requires 220V input
Total cost: R2174.63 excluding delivery and sundries. I have my doubts whether that 5A PSU will be able to power all my equipment. My only other option is to recommisison my Pi that I can power from the USB port on the B315 and move the Unifi Controller and Pi-Hole running on the NUC onto it, but then I lose access to my stored media as that is all running off the NUC.

Eskom, you are really f**king with my plans here :(
 
PhireSide said:
I see that unit only pushes 3A or about 36W by my calculations so I think that should be fine for my B315 and Edgerouter and Unifi AP, but I would need a boost converter to ramp up to 24V for the AP as it uses PoE. And then there is the case of my Intel NUC running my Pi-Hole and Unifi Controller which needs 19V and certainly draws more than 3A under load. Seems my idea isn't going to work so well :confused:

By my estimations I need:

5W for the B315
5W for the EdgeRouter
10W for the Access Point
20W for the NUC
20W for the screen

That is 60W draw, excluding losses which is cutting it fine with the stuff I listed below.

My current shopping list looks like this:

  • CCTV POWERBOX 13,6V 5A W/B CHG R 762.84
    • Combination PSU and battery charger with 5A output ~ 68W
  • BATT 12V26 R 861.35
    • 12V 26Ah battery. I am not sure if the above charger will be sufficient to charge this size battery up?
  • MP121M-4,5MM SLEEVE R10.11 x 4
    • Barrel connectors for the various things that need to be powered
  • DGM DC/DC 600W BOOST 12-80V 10A R225.00 x 2
    • Boost converter to get 19V to power the NUC and LED screen and another to get 24V for the PoE injector
  • Single Port Gigabit Passive PoE Injector R60.00
    • I will have to replace the Unifi PoE injector with one of these, as the Unifi one requires 220V input
Total cost: R2174.63 excluding delivery and sundries. I have my doubts whether that 5A PSU will be able to power all my equipment. My only other option is to recommisison my Pi that I can power from the USB port on the B315 and move the Unifi Controller and Pi-Hole running on the NUC onto it, but then I lose access to my stored media as that is all running off the NUC.

Eskom, you are really f**king with my plans here :(
Click to expand...
If the poe device is a pasive poe , there a good chance it could run of a lower voltage. Check its users manual.
Could maybe run nuc and poe of 19v
 
thehuman said:
If the poe device is a pasive poe , there a good chance it could run of a lower voltage. Check its users manual.
Could maybe run nuc and poe of 19v
Click to expand...
I'm about to do this exact test. My AP says it only requires 5V at well under 1 Amp, but it's plugged into POE at 48 volts (can't remember what that standard is called). Gonna try to power the PoE injector with 12V 1A and see if it works. If not I may MacGyver my own "special" PoE injector.
 
Actually, that reminds me - how the heck do you figure out what type of DC plug you need? I already have that standard 2.1mm or whatever jack, but some of my devices use weird sizes. They are "colour" coded but I've compared them to other generic plugs of the same colour and they don't match. I need to buy "blank" DC jacks to wire to my battery on one side and into the device on the other.
 
LazyLion said:
This would be better....

View attachment 752966

Would power the router, the home switch, etc. For about 8 hours or more.
Click to expand...
Overkill. But maybe if this load shedding business gets worse. For now, I'm just gonna go with a 12v battery.
(How much tho? Assume that's a battery "cabinet" and an inverter?)
 
About R9K....

But it would be able to power your PC or laptop as well, and a lot longer if your draw is not too high.
 
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