Test/Review of Ikea Koppla

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HKJ
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Test/Review of Ikea Koppla
Ikea Koppla

DSC_2497

Official specifications:
  • USB ports: 3
  • Total current output: 3400mA
  • Port current output: 2400mA

I got it from Ikea

DSC_2493DSC_2494

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DSC_2500

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Measurements
  • Power consumption when idle is about 0.03 watt
  • Port ports has automatic coding up to Apple 2.5A


Ikea%20Koppla%20top%20load%20sweep
Ikea%20Koppla%20bottom%20load%20sweep

The top and bottom ports looks nearly the same, the bottom port has higher voltage when loaded.
There is no individual port protection and 4A in a usb port is a bit much.

Ikea%20Koppla%20load%20sweep

Running all port in parallel I found out the common protection trips just above 4A.

The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.

Temp2693

M1: 40,1°C, M2: 40,0°C, HS1: 54,1°C
The transformer is the hottest part in the charger.

Temp2694

M1: 42,6°C, HS1: 53,9°C

Temp2695

M1: 33,1°C, HS1: 41,7°C

Temp2696

M1: 39,2°C, M2: 39,6°C, HS1: 52,1°C

10ohm

The noise level is fairly low 12mV rms and 278mVpp.

5ohm

Increasing current, do increase it slightly: 16mV rms and 309mVpp.

2.5ohm

And again: 22mV rms and 313mVpp.

1.5ohm

At full power the noise level is still reasonable: 30mV rms and 348mVpp.




Tear down

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A good squeeze with a vice and a screwdriver could break it open.

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There is a common mode coil on the input and a inductor between the two capacitors. It uses a mains switcher transistor and has a safety capacitor to the low volt side.
The rectifier diode uses the aluminium behind the usb connectors as heatsink.

DSC_2615

On the bottom side is the input fuse (red part marked F1), a bridge rectifier (BD1), the switcher controller (U1). Notice a part marked NTC2, it is probably a over temperature shutdown.
On the low volt side is the 3 auto coding chips (U2, U3 and U4).

DSC_2616

The black part between the two capacitors is a inductor.

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The low voltage winding on the transformer comes out at the top and goes to the other side of the slit in the circuit board. This is a way to keep good isolation distance.

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Both with a without slit there is a good safety distance.

Testing with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.



Conclusion

It looks like a very clean design, no parts on top of each other or squeezed together, there is space for everything, including a good isolation distance. The performance is good.



Notes

Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Ormbett
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Thanks HKJ! I have used mine a couple of months now and are very happy with it. Watt per SEK ratio is very good too :bigsmile:

Kind regards

fyesilova
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Thanks for the review, I have noticed this unit a few months ago at ikea.
there were wiresless chargers also, but I do not have any phone that supports wireless charging.

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Manx
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Thank you very much for the review, now I can be sure that is a good tool Smile

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Manx
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Quote:
Port current output: 2400mA

Well, maybe it is a very stupid question, but before buy it… don’t you think 2400mA for a single port it is too much? Well, I understand it will be very fast :bigsmile: but again for example, can I use it for recharge a battery sit in a power bank, that can handle just 1A?

Excuse me for this stupid question, I know….
But before pay it 10 euro…Just because I can spend 10 euro in another better tool.
Thank you very much.

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HKJ
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Manx wrote:
Quote:
Port current output: 2400mA
Well, maybe it is a very stupid question, but before buy it... don't you think 2400mA for a single port it is too much? Well, I understand it will be very fast :bigsmile: but again for example, can I use it for recharge a battery sit in a power bank, that can handle just 1A? Excuse me for this stupid question, I know.... :8) But before pay it 10 euro...Just because I can spend 10 euro in another better tool. Thank you very much.

It is a bit like asking if your mains outlet that can deliver 2000 Watt (or more) is a bit to powerful to plug your 5 watt phone charger into.

In both cases the connected device will only use the power/current it needs, any extra is not used and the phone will not charge faster (Except if it know how to use some extra current).

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Manx
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Quote:
It is a bit like asking if your mains outlet that can deliver 2000 Watt (or more) is a bit to powerful to plug your 5 watt phone charger into.In both cases the connected device will only use the power/current it needs, any extra is not used and the phone will not charge faster (Except if it know how to use some extra current).

You are right, thank you.
Shame on me Wink

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HKJ
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Manx wrote:
You are right, thank you. Shame on me ;)

The killer is voltage, if that do not match you might fry something. That is usual not a problem with usb, but with barrel connectors it can be.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

piasca
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For 10€ I think is very good. Considering other offers from china its not that expensive.

dodge_911
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HKJ wrote:

It is a bit like asking if your mains outlet that can deliver 2000 Watt (or more) is a bit to powerful to plug your 5 watt phone charger into.

In both cases the connected device will only use the power/current it needs, any extra is not used and the phone will not charge faster (Except if it know how to use some extra current).


My standard operating procedure is asking people if they have 2000 watt bulbs all over the house when they ask about that kind of thing :)g
:: youtube ::
http://bit.ly/dodgereviewsyt
:: blog ::
http://bit.ly/dodgereviewstmb
  :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable resistance tests ::
http://bit.ly/drmicrousb
:: lightning cable resistance tests ::
http://bit.ly/drlightning
 :: type-C cable resistance tests ::
http://bit.ly/drtypec

 

dodge_911
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bigclivedotcom did a nice teardown video on this :

:: youtube ::
http://bit.ly/dodgereviewsyt
:: blog ::
http://bit.ly/dodgereviewstmb
  :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable resistance tests ::
http://bit.ly/drmicrousb
:: lightning cable resistance tests ::
http://bit.ly/drlightning
 :: type-C cable resistance tests ::
http://bit.ly/drtypec