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Looking for a fast wireless charger

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By nitramus, Senior Member on 26th April 2014, 05:25 PM
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Looking around I found that pretty much all wireless chargers output only 1A when the official Nexus wireless charger outputs 1.8A but it is expensive.
Anybody know of other wireless chargers with at least 1.5A output and similar size. Not those 2x or 3x sizes.
Thanks

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26th April 2014, 07:50 PM |#2  
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Quote:
Originally Posted by nitramus

Looking around I found that pretty much all wireless chargers output only 1A when the official Nexus wireless charger outputs 1.8A but it is expensive.
Anybody know of other wireless chargers with at least 1.5A output and similar size. Not those 2x or 3x sizes.
Thanks

Sent from my Nexus 5 using XDA Premium 4 mobile app

Just FYI you need to be careful when looking at Input vs Output. The Nexus Wireless Charger is using a 1.8A input from the AC Adapter, but outputs the same 1A as all the others. There are no faster Qi chargers, 1A is the highest output available.
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26th April 2014, 09:17 PM |#3  
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Quote:
Originally Posted by mmmmBACON

Just FYI you need to be careful when looking at Input vs Output. The Nexus Wireless Charger is using a 1.8A input from the AC Adapter, but outputs the same 1A as all the others. There are no faster Qi chargers, 1A is the highest output available.

Here are the specs I found http://pocketnow.com/2014/03/18/nexu...ging-accessory
http://www.androidcentral.com/nexus-...s-charger-2013

I just emailed google now I will know. I'm starting to think you are right.
Last edited by nitramus; 26th April 2014 at 09:30 PM.
26th April 2014, 10:17 PM |#4  
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Here is the official response from google.
"The Nexus wireless charger draws 9W power (input) and outputs 1.8 amps."
26th April 2014, 10:37 PM |#5  
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Quote:
Originally Posted by nitramus

Here is the official response from google.
"The Nexus wireless charger draws 9W power (input) and outputs 1.8 amps."

That's nice of them to give you false information...

They are confusing the Output of their AC Adapter, with the Output of the Qi Pad itself. You should reply to them and ask for the specific distinction between the two because they are clearly giving you wrong information (or more likely just regurgitating what the website tells them).

You can do a search here on XDA (many people have it). It does not output 1.8A, it is powered by 1.8A.

Here is the charging diagram from the Anandtech Nexus 5 review.

Quote:

Notice how the charging time is slower than the stock AC Adapter, yet the power draw is higher? The stock AC Adapter is 1.2A. The Wireless Charger is drawing the higher current from the wall adapter (1.8A) and outputting the standard 1A from the Qi Pad, and less to the phone, hence the longer charging time.
Last edited by mmmmBACON; 26th April 2014 at 10:43 PM.
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26th April 2014, 11:21 PM |#6  
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Thanks for that article and definitive proof.
Now since you seem to know a lot about this is there one you would suggest?
Thanks again

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26th April 2014, 11:30 PM |#7  
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Also bear in mind that Qi charging is inefficient so even though it outputs at 1mA, it will be charging slower than a wired charger at the same output.
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27th April 2014, 12:14 AM |#8  
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Quote:
Originally Posted by nitramus

Thanks for that article and definitive proof.
Now since you seem to know a lot about this is there one you would suggest?
Thanks again

Sent from my Nexus 5 using XDA Premium 4 mobile app

Well it really depends on your personal preference. They all essentially perform exactly the same as long as you have them powered properly. So it's really just up to your aesthetic design choices and how much you're willing to spend.
27th April 2014, 01:01 AM |#9  
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Sorry incorrect thread...deleted post.
Last edited by ritzxda; 27th April 2014 at 02:13 AM. Reason: Incorrect thread
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