Router Battery Backup

[K3NS31]

The Romoss is 5V (20000mAh) I just presumed that with that cable it goes from 5V to 12V

LOL if only it worked that way. That'd be a magic cable.

You're out of luck with that powerbank. It probably has a 5V @ 2.4A output. That's 14Watts. The datasheet above says the router needs around 24Watts. So even with a boost converter you would't be able to power it.

Edit: For clarity, this method works on devices that are "rated" 9 or 12 Volts but only actually need far less, maybe 5 or 6V. So they'll work happily from the lower powered source of a 5V power bank. Your router has LTE, AC wifi etc. Not a chance it's gonna work on 5V.

 

[ld13]

The Romoss is 5V (20000mAh) I just presumed that with that cable it goes from 5V to 12V

You need a specific cable, that does the necessary voltage boosting. E.g. http://www.banggood.com/1m-5V-DC-To...er-Plug-with-LED-2_1mm-x-5_5mm-p-1052777.html

And even then, you might not have enough juice, especially if you max your router (although few of us do).

 

[SlowInternet]

LOL if only it worked that way. That'd be a magic cable.

You're out of luck with that powerbank. It probably has a 5V @ 2.4A output. That's 14Watts. The datasheet above says the router needs around 24Watts. So even with a boost converter you would't be able to power it.

Thanks. Yes it has 5V @2.4A output. When I purchased the cable they told me it can be used to convert the powerbank 5v to 12v for the router.

 

[SlowInternet]

You need a specific cable, that does the necessary voltage boosting. E.g. http://www.banggood.com/1m-5V-DC-To...er-Plug-with-LED-2_1mm-x-5_5mm-p-1052777.html

And even then, you might not have enough juice, especially if you max your router (although few of us do).

That is the cable I have but I presume with the powerbank it doesn't have enough power

 

[K3NS31]

Thanks. Yes it has 5V @2.4A output. When I purchased the cable they told me it can be used to convert the powerbank 5v to 12v for the router.

It might well do that, but not with enough Amps. After all, you can't just create more power. Unfortunately.

 

[SlowInternet]

It might well do that, but not with enough Amps. After all, you can't just create more power. Unfortunately.

I do currently have a Huawei backup battery that I use with the router and it keeps the router going for the duration of the loadshedding. (7.4V @ 2A) Just thought that it would be nice to have some alternatives.

 

[K3NS31]

Now, if you had a Quick charge (QC 2 or 3) or Power Delivery (PD) powerbank, it would be a different story. IMHO it's only worthwhile if you already have one. Even QC2 powerbanks still seem to be a bit pricey in SA for some reason.
Anyway, those can output much more power, but you still need the "trigger or decoy" device to tell them to turn on that power. Then you can happily plug it into your hungry router.

 

[ld13]

That is the cable I have but I presume with the powerbank it doesn't have enough power

My apologies, did not see the small 12 sticker on the port.

I assume you are using the port on the romoss with the two thunderbolts?
Does the romoss remain on, while the router resets?

If yes and yes, then the 5V2.xA the romoss can supply is either not enough or the booster circuit on the cable is e.g. rated at 800mA or something low, and can thus not supply the necessary power output (amps wise) to the router.

You could hack up a dual USB cable to give the cable more power (although afaik that specific romoss does not state the combined max power output at the bottom?), but my money would be on the cable itself, not rated for this amount of output (since it is so small). Still searching for some specs on this cable...

 

[K3NS31]

I do currently have a Huawei backup battery that I use with the router and it keeps the router going for the duration of the loadshedding. (7.4V @ 2A) Just thought that it would be nice to have some alternatives.

Almost! 7.4 x 2 = 14.8W. I.O.W. even though it's rated at 24 it'll work down to ~15W. So your other powerbank is just 2W too little to power that router. Maybe if you disable LTE? (assuming that's not what you actually need it for)

 

[SlowInternet]

My apologies, did not see the small 12 sticker on the port.

I assume you are using the port on the romoss with the two thunderbolts?
Does the romoss remain on, while the router resets?

If yes and yes, then the 5V2.xA the romoss can supply is either not enough or the booster circuit on the cable is e.g. rated at 800mA or something low, and can thus not supply the necessary power output (amps wise) to the router.

You could hack up a dual USB cable to give the cable more power (although afaik that specific romoss does not state the combined max power output at the bottom?), but my money would be on the cable itself, not rated for this amount of output (since it is so small). Still searching for some specs on this cable...

Yes the port with 2 thunderbolts

Yes the Romoss stays on while the router resets

 

[ld13]

Yes the port with 2 thunderbolts
Yes the Romoss stays on while the router resets

Cool, so current is flowing constantly.

Almost! 7.4 x 2 = 14.8W. I.O.W. even though it's rated at 24 it'll work down to ~15W. So your other powerbank is just 2W too little to power that router. Maybe if you disable LTE? (assuming that's not what you actually need it for)

Jikes yes, this is a heavy router. You would need to disable some features to get that power draw down. Even then, it might still do a POST during boot, and then fall over.

As per this site, the max that cable can do is 12W. Simply not enough to power this :-(

 

[powermzii]

Back in stock @mrafiq1

 

[mrafiq1]

@powermzii - Cool. Thanks. Just ordered 1. Only 32 left in stock

 

[bar1]

almost missed it....was going to post 4 left and realized it was posted already!

 

[bar1]

I have mikrotik hap ac² router and would like to power it via the POE port on the ratel.
Do i need to get anything extra?or it should just work

 

[powermzii]

I have mikrotik hap ac² router and would like to power it via the POE port on the ratel.
Do i need to get anything extra?or it should just work

It should just work if you plug in an ethernet cable - i'm not sure though if the POE is 100/1000 Mbps so there might be some limitation on throughput

 

[Speedster]

It should just work if you plug in an ethernet cable - i'm not sure though if the POE is 100/1000 Mbps so there might be some limitation on throughput

Question on this, the ratel isn't a switch, so how does data transfer work? It looks like you're only able to power the device but no option for data over the same cable. Or am I missing something?

 

[powermzii]

Question on this, the ratel isn't a switch, so how does data transfer work? It looks like you're only able to power the device but no option for data over the same cable. Or am I missing something?

Sorry - disregard my earlier message.

The Ratel has both a POE and LAN port

 

[Speedster]

Ah ok, that makes sense.

 

[Compton_effect]

Just don't learn the hard way about voltages. I have a nice shiny Gizzu, but my Asus router runs 19V. and the Gizzu only puts that out on the POE. I thought about picking up a passive POE splitter, but not sure how well Active POE from the Gizzu would handle a Passive output

EDIT - found some documents about this. It seems you can't do that.