Router Battery Backup

[Thor]

The mikrotiks and rpi's won't care about modified sine. I'm not sure about the sonoff, but it should be fine.

I thought silicon-controlled rectifiers will have an issue.

@biometrics what do you use?

 

[P924]

I thought silicon-controlled rectifiers will have an issue.

@biometrics what do you use?

The triacs themselves won't care, there is a very slight chance that they way they control them might not work, but that is unlikely.

 

[joker08]

SIK liqadation, just picked up battery and inverter/charger combo.

Need to test this bad boy out as replacement for mecer, as mecer stock only coming in April.

R1500 for 120ah battery

which inverter did u buy and for how much ?

 

[joker08]

I just need to power my PC, how much does a PC with 550w power supply and a 26 inch monitor normally need ?

 

[Gtx Gaming]

which inverter did u buy and for how much ?

Its the ECCO 1500watt UPS/inverter with 10ah charger built in with automatic fail-over like the mecer.

Unlike the mecer 1440watt this is 12volt so only need 1 battery to run.

They charging R2000 atm for it. They also 2000watt model, which I think was R3000.

Will see how it runs tonight, at-least this comes with battery clips also, mecer you need buy clips for the battery also.

The last stock 720watt mecer stock cost me R1900 inc shipping, so not much more than this one.

 

[Gtx Gaming]

I just need to power my PC, how much does a PC with 550w power supply and a 26 inch monitor normally need ?

You can go manual route with smaller inverter and charger. Then you need charge batteries manually when load shedding is done and switch on inverter each time also.

 

[joker08]

fed up of switching power manually for the modem/cpe I want something automatic now.
a UPS such as urs will be a good choice. Let me know how it goes

 

[KOPITE]

I have an Asus router which also needs 19v 1.75a

Managed to get one of these on gumtree : (rsaweb were giving them away for free to customers), 12v 3a = 36w, perfect for the Asus routers

Product Not Available

Product Not Available

m.alibaba.com

And got a 12v to 19v step up transformer to work with it. Then needed a 4.0mm x 1.35mm cable tip (or you can cut the Asus power supply and use that).

Order two of those and you'll be sorted. Shipping with DHL costs quite a bit but may end up about 2k total.
Alternatively wait for the Ratel 860p (60w) stock to arrive, which may be mid March according to sinetech.

I ordered the 430M today and will be testing it tomorrow. no stock in Cape Town at Communica. i just need at least my vdsl router with wifi to work so we can at least browse or stream stuff.

If the loadshedding is long term then i might look into the 460p or something a little bigger.

 

[Gtx Gaming]

Quickly plugged it in, all working fine. No beeping which was annoying on ups. But there no indicator for battery percentage on this model though.

 

[Düber]

I was initially looking at the
ME-3000-WPRU

I got a ME2000-WPTU (I wanted the rack mount but they were out of stock) and I am very pleased with it, there is no delay whatsoever when the power goes down.
Only negative I have is that it runs off 48v (ie. 4 batteries) so replacing or upgrading batteries could be expensive.

With a 16ch DVR, 10 cameras, 2 Pi's and their hard drives, 2 LED lights, a router and a switch it is telling me there is 2,5 hours of reserve, adding my computer (a bit old and not very efficient) and screen it drops down to just over an hour, but even after it get's to zero time left it still carries on, I have not run it to "switch off" point yet though. Obviously YMMV.
It also runs happily on the generator, upping the voltage and cleaning up the power.

 

[ebendl]

My 2x7 Ah 12v lead-acid batteries + Sherlotronics PSU died earlier today during loadshedding powering a Raspberry Pi plus my Mikrotik + fibre ONT. Now with the second loadshedding, powering just the Mikrotik & ONT, it looks like the batteries are both down to 10v already, so I'm pretty sure they're shot.

Plugged out everything, will try to charge it with a dedicated car battery charger tonight when the power is back on. But I'm probably gonna have to replace them .

Anybody know of a good deal of 7 - 20 Ah batteries?

 

[Thor]

My 2x7 Ah 12v lead-acid batteries + Sherlotronics PSU died earlier today during loadshedding powering a Raspberry Pi plus my Mikrotik + fibre ONT. Now with the second loadshedding, powering just the Mikrotik & ONT, it looks like the batteries are both down to 10v already, so I'm pretty sure they're shot.

Plugged out everything, will try to charge it with a dedicated car battery charger tonight when the power is back on. But I'm probably gonna have to replace them .

Anybody know of a good deal of 7 - 20 Ah batteries?

Dammit so 2 x 7ah is out. Which is most of the mecer UPses

 

[Wisemansa]

Hi guys,

I have an ONT that's rated to 12V DC/0.5A, just wanted to know if it'll work fine with the Ratel 412 Micro DC-to-DC UPS. I'm in Cape Town so realistically it must only last the 2h30m load-shedding period here. Also how reliable is Sinetech with regards to deliveries to this side?

12v 0.5A is only 6w, so the 15w capacity will work just fine. Data sheet shows at 15w will last 4hrs so should pull through without a problem with just the ont. Sinetech use Collivery couriers so sure there won't be any problems delivering.

 

[GlassMirror]

12v 0.5A is only 6w, so the 15w capacity will work just fine. Data sheet shows at 15w will last 4hrs so should pull through without a problem with just the ont. Sinetech use Collivery couriers so sure there won't be any problems delivering.

Thanks man

 

[Speedster]

My 2x7 Ah 12v lead-acid batteries + Sherlotronics PSU died earlier today during loadshedding powering a Raspberry Pi plus my Mikrotik + fibre ONT. Now with the second loadshedding, powering just the Mikrotik & ONT, it looks like the batteries are both down to 10v already, so I'm pretty sure they're shot.

Plugged out everything, will try to charge it with a dedicated car battery charger tonight when the power is back on. But I'm probably gonna have to replace them .

Anybody know of a good deal of 7 - 20 Ah batteries?

You sure the batteries are shot? Perhaps they just didn't have sufficient time to charge after the first outage?

 

[furpile]

My 2x7 Ah 12v lead-acid batteries + Sherlotronics PSU died earlier today during loadshedding powering a Raspberry Pi plus my Mikrotik + fibre ONT. Now with the second loadshedding, powering just the Mikrotik & ONT, it looks like the batteries are both down to 10v already, so I'm pretty sure they're shot.

Plugged out everything, will try to charge it with a dedicated car battery charger tonight when the power is back on. But I'm probably gonna have to replace them .

Anybody know of a good deal of 7 - 20 Ah batteries?

This UPS was probably not designed to handle load shedding situations, more likely general power failures that don't last as long. This is the important bit from Sherlotronics:

Low battery switch off at 10V DC.

http://www.kendrickastro.com/lvc.html

The truth is that any lead acid battery, be it a Gel Cell, AGM or flooded batteries such as DCBs, should be cut-off at 11.6 volts. Not doing so increases the risk of damage to the battery and if taken down deep enough into the batteries charge, will ruin the battery. Having said that, the absolute lowest level a lead acid battery can be discharged to, UNDER LOAD, is 10.8 volts but this is not recommended (more on this below).

So every time this UPS drops your batteries below 11,6V you are damaging them. Your best bet is to replace them with lead crystal batteries, which shouldn't have a problem with being discharged more. Or you need to find another way of switching off the unit at a higher voltage.

PS. I have a similar UPS, that Communica also sells, and it also has the 10V cutoff. However, I have a 45Ah battery from a UPS in it so it shouldn't get down to low voltage easily with the few things it is powering.

 

[ebendl]

This UPS was probably not designed to handle load shedding situations, more likely general power failures that don't last as long. This is the important bit from Sherlotronics:

http://www.kendrickastro.com/lvc.html

So every time this UPS drops your batteries below 11,6V you are damaging them. Your best bet is to replace them with lead crystal batteries, which shouldn't have a problem with being discharged more. Or you need to find another way of switching off the unit at a higher voltage.

PS. I have a similar UPS, that Communica also sells, and it also has the 10V cutoff. However, I have a 45Ah battery from a UPS in it so it shouldn't get down to low voltage easily with the few things it is powering.

Yes, aware of that 10V limit. I've actually read a couple of posts now recommending as much as 12.1V. I've bought a Wemos D1 with an ADC so that I can build my own wifi-enabled battery monitor to at least shut down the Mikrotik and Pi to lessen the load from those (even if it doesn't disconnect completely, it should at least stop consuming many amps).

Just haven't had time to build the bloody thing and now I've probably already destroyed one set of batteries. I plan on monitoring them with a multimeter tonight during loadshedding to see how quickly I get to 12.1V/11.6V .

So do you have any issues charging a 45Ah battery with yours?

 

[furpile]

Yes, aware of that 10V limit. I've actually read a couple of posts now recommending as much as 12.1V. I've bought a Wemos D1 with an ADC so that I can build my own wifi-enabled battery monitor to at least shut down the Mikrotik and Pi to lessen the load from those (even if it doesn't disconnect completely, it should at least stop consuming many amps).

Just haven't had time to build the bloody thing and now I've probably already destroyed one set of batteries. I plan on monitoring them with a multimeter tonight during loadshedding to see how quickly I get to 12.1V/11.6V .

So do you have any issues charging a 45Ah battery with yours?

Nope. Have been using that battery for about 4 years now. Have had LED lights on as well when we had power failures of up to 24 hours. The unit has never shut off yet. Want to put a voltmeter on now to monitor the battery. In our town we only get loadshedding once a day, so the battery has a lot of time to charge.

 

[Thor]

Can you explain to me how the Ratel’s POE works – in otherwords does it have a LAN input and then POE output?

Can the POE carry the data transmission is what I am trying to get at?

Mikrotik è LAN cable to Ratel => Lan cable POE to Unifi AP.

Ratel DC output => Mikrotik

Ratel USB => Raspberry Pi

(Tik, AP + Raspberry) draws 16 watt

 

[PhireSide]

Can you explain to me how the Ratel’s POE works – in otherwords does it have a LAN input and then POE output?
Correct

Can the POE carry the data transmission is what I am trying to get at?
Yes, but IIRC it may be limited to FastEthernet speeds, not full Gigabit

Mikrotik è LAN cable to Ratel => Lan cable POE to Unifi AP.

Ratel DC output => Mikrotik

Ratel USB => Raspberry Pi

(Tik, AP + Raspberry) draws 16 watt

Your setup was very similar to mine - I just had an Edgerouter and B315 instead of the Tik that you have along with the Unifi AP and also a Rpi 3B+