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[Q] Xperia Z current draw when charging ?

OP screamer2703

19th May 2014, 05:28 PM   |  #1  
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I am using the Waze app when driving and I always notice that the battery level starts to decrease over time even though the phone is connected to a 2.1A car charger.

Therefore, I decided to connect an amp meter to the charger and measure the current draw:

2.1A car charger - USB input - current draw: 0.8A to 1A with the screen on and Waze running with GPS on
1.5A Sony mains charger - USB input - current draw same as above

This means that the phone does not draw enough current to keep the battery charged. OS problem ?

I tested even the dock charger and I got a very different result:

1.8A dock charger - Dock charger side pads - current draw 1.4A with the screen on.

Why the sudden increase in current when using the dock charger ? Is there a fast charge mode for the Xperia Z ?
23rd May 2014, 11:37 AM   |  #2  
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Nobody knows nothing ?
24th May 2014, 09:57 PM   |  #3  
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Quote:
Originally Posted by screamer2703

I am using the Waze app when driving and I always notice that the battery level starts to decrease over time even though the phone is connected to a 2.1A car charger.

Therefore, I decided to connect an amp meter to the charger and measure the current draw:

2.1A car charger - USB input - current draw: 0.8A to 1A with the screen on and Waze running with GPS on
1.5A Sony mains charger - USB input - current draw same as above

This means that the phone does not draw enough current to keep the battery charged. OS problem ?

I tested even the dock charger and I got a very different result:

1.8A dock charger - Dock charger side pads - current draw 1.4A with the screen on.

Why the sudden increase in current when using the dock charger ? Is there a fast charge mode for the Xperia Z ?

I think its more of a hardware issue.
Some connector pin on pcb might be acting up.

Hit thanks if helped
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