Router Battery Backup

[dabbler]

I received my Gizzu mini UPS today, and have a couple of questions:

1. How long does it take to charge from completely dead to 100%?
2. How does one know when it is fully charged?

I would assume it is fully charged when no lights are blinking? I plugged it in to test it quickly, so that I can return it if it's faulty, when I plugged it in the fourth (100%) indicator light started blinking, and when it stopped blinking, I assumed it was fully charged. When I plugged my router in, the 100% indicator light went off, which led me to believe it wasn't fully charged?

3. It is my understanding that you leave it plugged in permanently, after all that is what the "U" in UPS stands for, I guess - but just want to double check if that is the correct way to use it?

The model I have is the 30W 38Wh 10400mAh

I have one of these and have had it operate on load for longer than 5 hours on my router (Mikrotik) without dropping off, so yours should be similar. Been running for more than a year.

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[PPLdude]

I connected my 12v 1a ont to by gizzu and it (ont) started smoking :/

 

[PsyWulf]

I connected my 12v 1a ont to by gizzu and it (ont) started smoking :/

Did you try a nicotene patch?

 

[wingnut771]

I connected my 12v 1a ont to by gizzu and it (ont) started smoking :/

Maybe something to do with this?

 

[PPLdude]

Maybe something to do with this?
View attachment 1703553

Uhh I have no idea what that is

 

[leon.davibe]

I connected my 12v 1a ont to by gizzu and it (ont) started smoking :/

as wingnut said or a voltage difference normally they will accept a bit higher than specified without popping
sure most are designed with a safety margin how big is like the piece of string who knows

 

[PsyWulf]

Uhh I have no idea what that is

Center negative or center positive - it's an important thing to know about the power supply you're replacing (unfortunately)
Like putting in a car battery the wrong way

 

[wingnut771]

Uhh I have no idea what that is

Some devices have a positive pin in the middle, some have a negative pin in the middle. There is a graphic on the device telling you.

 

[wingnut771]

as wingnut said or a voltage difference normally they will accept a bit higher than specified without popping
sure most are designed with a safety margin how big is like the piece of string who knows

Yeah, what voltage is the ont?

 

[wingnut771]

Imagine trying to figure this one out:

 

[leon.davibe]

Imagine trying to figure this one out:
View attachment 1703567

yea thats is where a tester that shows negative comes in handy

 

[wingnut771]

yea thats is where a tester that shows negative comes in handy

What are you testing? Which way causes smoke?

 

[Bundu]

all the devices that I've seen have always had + on centre pin

 

[PsyWulf]

all the devices that I've seen have always had + on centre pin

It only takes one

 

[leon.davibe]

What are you testing? Which way causes smoke?

The psu they are a pair afterall

 

[wingnut771]

The psu they are a pair afterall

You don't have the psu, all you have is this:

 

[leon.davibe]

You don't have the psu, all you have is this:
View attachment 1703709

if that is all you have and you don't want to gamble you either look for forum posts of others or open the device

and post those online, specialists in electronics will likely be able to deduce from components which is which i would think

if you encounter a device with dubious markings like this checking before it fails may be a good idea
but yea who of us thinks of doing that with new devices

 

[Steamy Tom]

You don't have the psu, all you have is this:
View attachment 1703709

As far as I know it is more common for the left symbol to be there outer and the right the inner. So if I had to absolute guess I would say the outer is positive. But I would just open it and see.

 

[Steamy Tom]

As far as I know it is more common for the left symbol to be there outer and the right the inner. So if I had to absolute guess I would say the outer is positive. But I would just open it and see.

You don't have the psu, all you have is this:
View attachment 1703709

So now that I am at a PC I searched for this, and it seems it was a question on some forum, its from an amp and it is indeed the outer positive, inner negative. Apparently also the inner is directly connected to an internal battery negative.

 

[Park@82]

Imagine trying to figure this one out:
View attachment 1703567

Is that on a router? What make/model?