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Xperia Z Charger Voltage

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By velihukka, Junior Member on 18th March 2014, 06:31 PM
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Already, I thought the Xperia Z charger felt weird. It stated 1.5 amps as the maximum output amperage. Also, for that amperage the phone seems to charge quite slow, especially when compared with four other USB charges, of 1 and 2.1 amps.

So, tonight I decided to take a multimeter to the charger(with my USB breakout cable) and the voltage measured just 4.90 volts(measured using a high quality multimeter). I was just wondering if someone else on this forum could take their charger (EP880 or your regional variant) and check their voltages, as a voltage below 5v seems quite unusual on USB spec chargers, and it seems odd that Sony would design a charger that would raise the voltage under load.
23rd March 2014, 01:01 PM |#2  
Don MC's Avatar
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Tried many chargers to power my Raspberry Pi (notoriously picky with power units). Measured the voltage over the TP pins on the Pi. The voltages ranged from 5.00V (Nokia AC-50E) to 4.75V (Sony XZ charger). Only the Sony charger manages to power the Pi without reboots and crashes, despite the lower voltage.

Both the Nokia and the Sony are made in China by Salcomp. Both are rated 1.5A. I guess they are identical on the inside. I am now charging my XZ with the Nokia charger and running my Pi with the Sony charger.

E: The Sony charger never had any problems charging my phone.
23rd March 2014, 02:14 PM |#3  
EmeraldTimer's Avatar
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I use a 5v and 2A power bank charger. it's a lot faster
1st January 2017, 04:49 AM |#4  
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USB is strictly 5.0 Volts with a absolute maximum of 5.5 Volts if I'm not mistaken but it is not the voltage that applies charge to any device. It's the amperage.
11th June 2017, 02:07 PM |#5  
Haldi4803's Avatar
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Official EP880 Charger has perfectly fine 5.02V but only charges with 1A and not as stated 1.5A
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