Router Battery Backup

Speedster said:
Couple of questions for the power-guru's on this thread. I currently have a Tescom 700VA UPS powering a B618 and B315 router, and a separate 50VA 12V transformer for my alarm.
  • I'm thinking of changing out the alarm PSU with a Ratel 860P (the 60W one) and connecting up my router (B618) to this too (the B315 will be decommissioned)
  • Alternatively, I've seen there are LiPo battery replacements for the standard 7Ah SLA battery. Are these any good? Are they a straight swop for the SLA, and would they give any performance boost over the SLA?
  • The third option is to put a larger battery on the UPS. What is the largest capacity battery one can safely connect up to a UPS this way?
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Since @biometrics so kindly screwed up my initial plan, I'll have to modify it. New thinking is then to get the smaller Ratel to power the B618 and pop a LiFePo4 battery in the alarm. I'm told the LiFePo4 has significantly better performance than SLA.
 
Speedster said:
Since @biometrics so kindly screwed up my initial plan, I'll have to modify it. New thinking is then to get the smaller Ratel to power the B618 and pop a LiFePo4 battery in the alarm. I'm told the LiFePo4 has significantly better performance than SLA.
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A 430 Ratel and a LTE router seems like a good match. Haven't used it much but so far I'm happy.
 
Daruk said:
Just get a high efficiency switching regulator for the 9v side and get a device that outputs 12v:

TSR 2-2490 | TRACOPOWER Through Hole Switching Regulator, 9V dc Output Voltage, 12 → 36V dc Input Voltage, 2A Output Current | RS Components

za.rs-online.com za.rs-online.com
Use a chocolate block to connect it up. One leg is common ground, one is 12v in, the other is 9v out.

View attachment 765750
Click to expand...

Confused here. Please explain in layman terms. I get two terminals from the output of the 12vdc source. I connect the negative from the input and the output to the ground terminal, the positive from the source(output from the 12vdc source) will go to the 12v in and the other is positive out.
Is that right ?
 
Does anyone know at what point the standard PC UPS's (eg Tescom 700VA) cut-out? How, if at all, do they measure DoD of the battery?
 
Speedster said:
Does anyone know at what point the standard PC UPS's (eg Tescom 700VA) cut-out? How, if at all, do they measure DoD of the battery?
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Under correction but I think it's based on voltage. It drops as the available Ah drops. So it's dependent on the battery type.
 
Would the 860p handle a Asus ac68u, 19v 1.75a, = 33,25w out of a single 12v output, obviously with a step up transformer?
 
HaNsA said:
Would the 860p handle a Asus ac68u, 19v 1.75a, = 33,25w out of a single 12v output, obviously with a step up transformer?
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Thinking of just getting this

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88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps on sale at reasonable prices, buy 88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps from mobile site on Aliexpress Now!
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12v 5a
88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps

From there will split and supply remaining devices
 
HaNsA said:
Thinking of just getting this

Online Shop 88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps | Aliexpress Mobile_en title

88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps on sale at reasonable prices, buy 88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps from mobile site on Aliexpress Now!
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12v 5a
88.8wh 24000mAh 12V 5A high capacity online ups 12pcs powerful cells inbuilt DC ups for gear motor and pumps

From there will split and supply remaining devices
Click to expand...
Almost R900 for shipping!
My question is what batteries are in this thing? 24 thousand mAh with just 12 cells? It ain't 18650s. Unless they're doing those "Chinese" calculations.
 
Daruk said:
2000-2500 mah 18650s seem common if you Google.
Click to expand...
So they put 12 of those in parallel and you get 24000 mAh at a whopping 3.6'ish volts. Then they boost that up to 12V and your 24000 mAh isn't gonna last very long at all. Very suspicious of those specs.
 
I'd guess it's 5.0A on all four ports or 1.2A each? IMHO 12V60W seems a little much to run through one DC cable
 
Speedster said:
I was looking at the 860p specsheet again and it seems that the 12V port can do 5A (i.e., 60W). Am I missing something here?

View attachment 766086
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Ya, it's 60W total but they give the breakdown of how much each port can handle, but it is a bit confusing. Are they saying 4x 12V ports split 5A between them to total 60W, or are they saying you could run 12V at 5A through just one port for 60W? Or both?
 
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