Lower wifi performance after mini UPS

AlphaJohn said:
I bought this one last year

Takealot.com: Online Shopping | SA's leading online store

South Africa's leading online store. Fast, reliable delivery to your door. Many ways to pay. Shop anything you can imagine: TVs, laptops, cellphones, kitchen appliances, toys, books, beauty & more. Shop the mobile app anytime, anywhere.
www.takealot.com www.takealot.com

Still very happy with my purchase.
Click to expand...
Very nice, probably also has 18650's inside
Easy to DIY when they're dead one day
 
AlphaJohn said:
It does, 4 of them wrapped in blue tape.

My plan is when their kak batteries die I'll just replace with some proper Samsungs
Click to expand...
Yup, the only brands I stick to are Samsung, Sony, LG, Panasonic and Sanyo
Ive never had a bad cell
 
Pineapple Smurf said:
Sounds like bad maths
My bad
I just checked my history
This is the puppy I bought, based on the amount of reviews. I love it

Takealot.com: Online Shopping | SA's leading online store

South Africa's leading online store. Fast, reliable delivery to your door. Many ways to pay. Shop anything you can imagine: TVs, laptops, cellphones, kitchen appliances, toys, books, beauty & more. Shop the mobile app anytime, anywhere.
www.takealot.com www.takealot.com

View attachment 1479841
Click to expand...
I have the exact same one and do love it, but I agree with OP since using this as mine is plugged in all the time, I also get random Wifi drops. I just never have the chance to actually proof it because of all the power issues.
 
This might sound silly but just check that you have correct voltage selected on the device. My 4g router was working but i was getting bad connections. I spent about an hour moving it all over my flat to get a better signal only to realize the mini ups switch was on 9v and not on 12v as my router is 12v.
 
Already checked and double checked mine. ONT 12V, AX3 ROUTER 12V and 8 port switch 5V.

I seriously have no idea what is up with worse wifi. It just cannot break into last main bedroom anymore whreas for 1.5 years before the backups not a single problem.
 
Random thought: One user review on Takalot mentioned very short DC cords. The UPS/charger and router should be as far apart as feasible, in order to reduce electromagnetic interference of the WiFi signals.
 
Friend has the gizzu dual dc ups and his ONT,AX3,UPS all standing next to each other with the short cable and he does not have wifi issues.

Even my stuff is standing very close to my ratel my cables is like 300mm long.

I use this to check the amps and volts on devices. Fitted it with a male and female dc jack
 
Last edited:
ld13 said:
What router do you have? Are you using the correct voltage? Have you tested the voltage output on the gizzu? Have you moved back to the old UPS to test your hypothesis? Can even test against the original power adaptor and compare the wifi performance. If you can switch back and forth and see a clear drop in performance, then the gizzu "must" be the blame, and you can then try to move the guzzu further away by getting a longer DC cable.
Click to expand...
I'm just busy working my way through all of these suggestions, I'll mess around with different combinations.

What router do you have?

TP-Link Archer C20 AC750 (cheap defualt router provided by cool ideas, it's my parents' router)​

Are you using the correct voltage?

I think I am, there's a little switch to change it to 9v and I'm pretty sure that's where it is... I'll check again at home. If it is on the wrong voltage will it still mostly work?

Have you tested the voltage output on the gizzu?

I have not... how do I do that?

Have you moved back to the old UPS to test your hypothesis?

I have and it does work better
The difference is night and day. When on the Gizzu it feels like the data is coming through in chunks (it's not just slower wifi), you click on a video, nothing happens and then everything comes through at once.

Can even test against the original power adaptor and compare the wifi performance.

I'll do this when I get home this afternoon

Thanks for the assistance
 
Noise on supply can affect devicr

ie i found that certain power supplies on the modified sinewave inverters would cause modem to behave erratic

So i used one of the very old power supplies with a transformer to solve the problem
As it breaks the direct link

If the power bank uses 3.7v parralel cells and steps up that may cause noise and interference via power line

Try using a alarm battery or a power. Bank that uses 3s battery an see if the problem persists

As the device just runs of battery no step up or down


SALT apply as needed
 
Rayne said:
Already checked and double checked mine. ONT 12V, AX3 ROUTER 12V and 8 port switch 5V.

I seriously have no idea what is up with worse wifi. It just cannot break into last main bedroom anymore whreas for 1.5 years before the backups not a single problem.
Click to expand...
Sure it supplies the right voltage

But does the port on the powerbank satisfy the amps too

If the device gets less power the strength of the radio output can be affected

ie if the power supply was 12v2a
And the backup can only supply 12v1.5a or whatever
 
reedOsama said:
I'm just busy working my way through all of these suggestions, I'll mess around with different combinations.

What router do you have?

TP-Link Archer C20 AC750 (cheap defualt router provided by cool ideas, it's my parents' router)​

Are you using the correct voltage?

I think I am, there's a little switch to change it to 9v and I'm pretty sure that's where it is... I'll check again at home. If it is on the wrong voltage will it still mostly work?

Have you tested the voltage output on the gizzu?

I have not... how do I do that?

Have you moved back to the old UPS to test your hypothesis?

I have and it does work better
The difference is night and day. When on the Gizzu it feels like the data is coming through in chunks (it's not just slower wifi), you click on a video, nothing happens and then everything comes through at once.

Can even test against the original power adaptor and compare the wifi performance.

I'll do this when I get home this afternoon

Thanks for the assistance
Click to expand...
Inside these devices it steps down the voltage if the internals run on 5v 3v and whatever volts specific chips need then yes it can if the design they used can work from the voltage you supply

But always best to give it what they suggest low voltage can pop devices as it has to use more amps to get the same power on wires and circuits that was designed for less amps

it will also get less power on 9v if the bank supplies the same amps on 9v 12v

Causing the radio not to up it's output to max
 
Last edited:
Jarrod said:
This might sound silly but just check that you have correct voltage selected on the device. My 4g router was working but i was getting bad connections. I spent about an hour moving it all over my flat to get a better signal only to realize the mini ups switch was on 9v and not on 12v as my router is 12v.
Click to expand...
I had the exact same problem. Previous gear was all 9V. Had fibre installed and new router and did not bother to check the voltages. Wifi was iffy, but ethernet worked great. Accidentally discovered the ONT and router wanted 12 V. After changing to 12 V the wifi worked great, even with low signal.
 
Happen to google the device now to suggest to family

The gizzu model uses step up if i have to deduce from how they list the specs

Use salt

ie all the batteries parralel inside , meaning you don't have to worry for cells going out of balance at least but that it would have to step up the voltage to meet 9 12v requirements

Step up and step down ads losses and noise

Noise can be filtered
Maybe the device has been designed to do this already


If you experience problems with devices behaving erratic on it
But not on a normal 12v alarm battery then most likely they don't
 
leon.davibe said:
Noise on supply can affect devicr

ie i found that certain power supplies on the modified sinewave inverters would cause modem to behave erratic

So i used one of the very old power supplies with a transformer to solve the problem
As it breaks the direct link

If the power bank uses 3.7v parralel cells and steps up that may cause noise and interference via power line

Try using a alarm battery or a power. Bank that uses 3s battery an see if the problem persists

As the device just runs of battery no step up or down


SALT apply as needed
Click to expand...

Yip, I tried using a modified side inverter on the complex intercom and it killed the all remote's reception when the inverter was active. I suspect they throw off a lot of RF interference
 
Tim_vb said:
Yip, I tried using a modified side inverter on the complex intercom and it killed the all remote's reception when the inverter was active. I suspect they throw off a lot of RF interference
Click to expand...
Noise on the power cable i Meant, but i suppose RF can be an issue too if the ups is to close to the receiver, that it drowns out the measly output of the remotes or affects it thanks to that giant ass transformer
 
Last edited:
Gordon_R said:
I know that, but the spec sheet conveniently forgets to mention voltage. Anyway the voltage will drop as the batteries are depleted, so 8800mAh can't simply be multiplied by 3.7V.
Click to expand...

Is there a specific reason you want to know the amps

You can calc what the bottom and top will be by the discharge graph

ie cell will go as low as 3v and as high as 4.2v

so you can say if you pull 1c
ie 32w then 32/3=10.66A
And 32/4.2= 7.619A
at battery level naturally
your amps will be constant on the voltage of the device as the converter steps it up or down to meet that
ie if you pull the 32w for an hour on 12v the amps on the wire that supply it will be 2.66a approx throughout that hour

8.8a is the avg over that hour, though not the avg of the extreme top and bottom
ie if you can pull 32.56w for an hour they convert that to give us the AH rating by dividing it by the nominal voltage as that what most people use to calc ****

So if you discharge at 1c ie use the capcity in one hour if it is rated to do so

You would start at 7.619a and end at 10.66a

I try and switch all my calcs to watt since that is the same irrespective of voltage

And what you will need when looking for a battery as most are rated in Wh/KWh
if i get a battery that is ah rated i convertd it to watts
 
Last edited:
reedOsama said:
Have you tested the voltage output on the gizzu?

I have not... how do I do that?
Click to expand...
A multimenter. Set it to 12v DC and then put the probes on the inside and outside of the DC connector cable (small round cable that comes out of the 9v output on the mini UPS) that comes from the mini UPS. That router only needs 9V at 0.6A so just over 5w, which is very low.
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X