Router Battery Backup

ghostRgg said:
Still waiting for the parts to arrive so we can see what the total cost is. Plus it really depends on how many cameras you want to run etc...
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Ito cameras, not really bothered as I have a large inverter and adequate batteries.

Only want to keep gate camera online at all times.


My issue is more my AP/mesh satellites as sometimes electricity has to be switched off.

Want my internet on even then.

Currently only my routers have small back up ups.
 
ghostRgg said:
Been spending the past two weeks sorting out a possible (affordable) power backup solution for PoE devices that use af since that requires 48-52v since every damn PoE power backup doesn't do more than 24v.

Long story short there are only two ways for those interested.

Simple - Grab yourself a cheaper 220-240v inverter power backup solution, will run you around R4-6k but will then just be plug and play into the PoE switch or injector without a hiccup.

Complex - Using something like a 24v normal power backup solution which is more affordable, importing a bunch of parts such as a PoE step-up module from Alibaba and building a unit yourself, then assemble it with the 48-52v PoE af into a cheap TP Link PoE switch and use that to distribute the power off to the devices. Trying to see if we can't actually build a bunch for sale, since we have way too many security groups, and neighbourhood watch communities requesting this, since they have some ncam or other cloud camera systems.
Click to expand...

This is similar to how I've gone.

I've chucked in a few UPS boards that had dud batteries, and wired them directly to a 802.3AT injector, and a 24V PSU for the passively powered components of my network.

So far my first prototype is working very well through the load shedding hell we had the past few weeks, this is the second unit I've built

20211114_180501.jpg

20211114_180342.jpg
 
Segg said:
This is similar to how I've gone.

I've chucked in a few UPS boards that had dud batteries, and wired them directly to a 802.3AT injector, and a 24V PSU for the passively powered components of my network.

So far my first prototype is working very well through the load shedding hell we had the past few weeks, this is the second unit I've built

View attachment 1192458

View attachment 1192456
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I have 2 smallish old UPSs that I wanted to use for something similar. Unfortunately they both switch off after 10 minutes on battery. I can't figure out how to override this automatic switch-off.
 
Lupus said:

Mini UPS

Buy Mini UPS online at the Best Prices! Door to Door and Overnight Delivery. Voted the best online store in SA. View Here
www.geewiz.co.za www.geewiz.co.za

This one which I paid R395 for at the start of the week, also hopefully they have stock to replace mine
Click to expand...

They some no name 18650 cells inside and they do not even meet the capacity stated on them. I repaired a dead one that had 2 dead cells just under a year old also opened up a brand new one just to rip out the cells and upgrade them with Samsung cells.

20211114_2145123.jpg
 
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x7razor said:
They some no name 18650 cells inside and they do not even meet the capacity stated on them. I repaired a dead one that had 2 dead cells just under a year old also opened up a brand new one just to rip out the cells and upgrade them with Samsung cells.

View attachment 1192604
Click to expand...
Those Samsung 3000mha batteries make an amazing difference to the up-time!!!
 
ghostRgg said:
Been spending the past two weeks sorting out a possible (affordable) power backup solution for PoE devices that use af since that requires 48-52v since every damn PoE power backup doesn't do more than 24v.

Long story short there are only two ways for those interested.

Simple - Grab yourself a cheaper 220-240v inverter power backup solution, will run you around R4-6k but will then just be plug and play into the PoE switch or injector without a hiccup.

Complex - Using something like a 24v normal power backup solution which is more affordable, importing a bunch of parts such as a PoE step-up module from Alibaba and building a unit yourself, then assemble it with the 48-52v PoE af into a cheap TP Link PoE switch and use that to distribute the power off to the devices. Trying to see if we can't actually build a bunch for sale, since we have way too many security groups, and neighbourhood watch communities requesting this, since they have some ncam or other cloud camera systems.
Click to expand...
Just want to second this. While I haven't done as much hands-on testing, my conclusion is basically the same.

The only additional option I've looked into here is the idea of a DIY inverter-type system. My setup uses a Ubiquiti switch + 2x AC PRO access points, so the power draw isn't that much.

Bill of materials

1. Charger (basically the key component of the system as you'll soon see) - Victron Blue Smart charger
2. Battery - Blue Nova LiFePO4 104 Wh, 140 Wh, 280 Wh, 570 Wh (choose based on your use-case)
3. Inverter - Victron Phoenix 12/250 with appropriate connector for your use-case. For me, the IEC connector is most useful
4. Miscellaneous wire, lugs, breakers, mounting hardware

Some notes

1. The charger will power your inverter directly while charging the battery. So that means that if your inverter is running at full tilt, your charger needs enough leftover capacity to charge the battery otherwise you're borked. So either choose a lower capacity inverter, or make sure you don't run the inverter at full tilt.
2. When considering the batteries, remember to over-provision to account for the fact that you don't want to take the batteries down from 100% to 0%. Lithium, you probably don't want to go below 20%. Additionally, consider your expected C rate. For lithium, you can do much higher C rates than e.g. AGM, but don't over-do it. e.g. for lithium if you have a 20 Ah battery, don't run more than 20 A through there (which would discharge the entire battery in an hour). The battery can probably do it, but it won't like it in the long run.
3. I've also come across an inverter charger which is available from Geewiz and provides seemingly very good value. The main down side seems to be that it takes 24 V input, meaning that you will probably have to series-connect batteries to power this. Which is doable, but you might need to worry about balancing the batteries.
 
ghostRgg said:
Been spending the past two weeks sorting out a possible (affordable) power backup solution for PoE devices that use af since that requires 48-52v since every damn PoE power backup doesn't do more than 24v.

Long story short there are only two ways for those interested.
snip...
Click to expand...
Maybe another option - depends on your devices:
So, PoE standard is 48V or whatever, but most home AP's, routers etc. require MUCH lower voltage. I have an AP that's like 5V or something, but wanted 48V to run PoE.

Here's what I did.
Get a passive PoE injector
This doesn't do any actual PoE'ing - all it does is allow you to run power over 2 of the wires in your CAT 5/6 cable.
IIRC you can choose which pair, not that it matters, see below.

I think I used this one - https://www.loot.co.za/product/tp-link-poe-splitter-adapter/vbvx-3203-g960
You can see it has a voltage selector (Obviously you must supply the correct voltage); but if you need a weird voltage you could simply put a buck converter after the output.

One caveat tho - you can't plug this into the poe port!
I split the power wires out at the device end and wired them into a DC jack. (just crimped on an RJ45 without the 2 power wires, then soldered those onto a DC jack).
Can try to find the pic, if anyone's interested?
 
Saba'a said:
Its a GREAT product. Just pricy unfortunately.
Click to expand...
It's quite cheap actually.. I built something like that (as did others in this thread, which is where I go the idea) - the CCTV power supply alone cost the same as this guy's entry level unit.
And I already had a battery.
Mine does have 5 or 6 outputs tho. His seems to only have 2.
 
CamiKaze said:
Anyone know why this Gizzu UPS can't power my IP Camera?

Hikvision 2042

Click to expand...

How did you connect it 12v or POE?

I can't see why it would not power the camera on 12v unless the voltage is too low or polarity is not correct. Best is to use a multimeter to test both Gizzu and camera PSU
 
x7razor said:
How did you connect it 12v or POE?

I can't see why it would not power the camera on 12v unless the voltage is too low or polarity is not correct. Best is to use a multimeter to test both Gizzu and camera PSU
Click to expand...

DC12V ± 25%, PoE (802.3af Class 3)

You can power it via DC12V which would work 100% unless there is some voltage issue on the actual backup. PoE won't work due to it being 802.3af which is 48-52v.
 
sn3rd said:
Just want to second this. While I haven't done as much hands-on testing, my conclusion is basically the same.

The only additional option I've looked into here is the idea of a DIY inverter-type system. My setup uses a Ubiquiti switch + 2x AC PRO access points, so the power draw isn't that much.

Bill of materials

1. Charger (basically the key component of the system as you'll soon see) - Victron Blue Smart charger
2. Battery - Blue Nova LiFePO4 104 Wh, 140 Wh, 280 Wh, 570 Wh (choose based on your use-case)
3. Inverter - Victron Phoenix 12/250 with appropriate connector for your use-case. For me, the IEC connector is most useful
4. Miscellaneous wire, lugs, breakers, mounting hardware

Some notes

1. The charger will power your inverter directly while charging the battery. So that means that if your inverter is running at full tilt, your charger needs enough leftover capacity to charge the battery otherwise you're borked. So either choose a lower capacity inverter, or make sure you don't run the inverter at full tilt.
2. When considering the batteries, remember to over-provision to account for the fact that you don't want to take the batteries down from 100% to 0%. Lithium, you probably don't want to go below 20%. Additionally, consider your expected C rate. For lithium, you can do much higher C rates than e.g. AGM, but don't over-do it. e.g. for lithium if you have a 20 Ah battery, don't run more than 20 A through there (which would discharge the entire battery in an hour). The battery can probably do it, but it won't like it in the long run.
3. I've also come across an inverter charger which is available from Geewiz and provides seemingly very good value. The main down side seems to be that it takes 24 V input, meaning that you will probably have to series-connect batteries to power this. Which is doable, but you might need to worry about balancing the batteries.
Click to expand...
Awesome to see people have been messing around with the same stuff. In all honesty, there can be a cost-effective solution, but for all of these cases, we are mostly just building a R10k Inverter solution that is a 120Ah liFePo4 setup with a 12v inverter. Not on the cheap side, but is designed to run multiple systems, including a PC/Laptop and monitor.

Trying to get a good solution for af standard PoE is just crazy, we have got a solution but it's still going to be at around R2-3k due to the cost of batteries and importing the voltage step-ups and PoE switches, since we wanted to make a small box as a be-all-end-all solution for 4-8 camera PoE systems.
Segg said:
This is similar to how I've gone.

I've chucked in a few UPS boards that had dud batteries, and wired them directly to a 802.3AT injector, and a 24V PSU for the passively powered components of my network.

So far my first prototype is working very well through the load shedding hell we had the past few weeks, this is the second unit I've built
Click to expand...
That's not a bad solution, but just looking at that, you are still only doing 24v passive PoE? Or am I missing something?

Note: 802.xx af is a thorn in my arse.
 
ghostRgg said:
Awesome to see people have been messing around with the same stuff. In all honesty, there can be a cost-effective solution, but for all of these cases, we are mostly just building a R10k Inverter solution that is a 120Ah liFePo4 setup with a 12v inverter. Not on the cheap side, but is designed to run multiple systems, including a PC/Laptop and monitor.

Trying to get a good solution for af standard PoE is just crazy, we have got a solution but it's still going to be at around R2-3k due to the cost of batteries and importing the voltage step-ups and PoE switches, since we wanted to make a small box as a be-all-end-all solution for 4-8 camera PoE systems.

That's not a bad solution, but just looking at that, you are still only doing 24v passive PoE? Or am I missing something?

Note: 802.xx af is a thorn in my arse.
Click to expand...

I've got some Mikrotik media converters that use passive PoE, then a Ubiquity hotspot that requires active, which also passes this through to a Fanvil telephone
 
K3NS31 said:
It's quite cheap actually.. I built something like that (as did others in this thread, which is where I go the idea) - the CCTV power supply alone cost the same as this guy's entry level unit.
And I already had a battery.
Mine does have 5 or 6 outputs tho. His seems to only have 2.
Click to expand...
A R1000? Surely not that cheap?
 
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