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[Q] Qi 2A output charger?

OP stas333

26th August 2014, 03:34 PM   |  #1  
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Can anyone recommend one? Or does it even exist? I can't find anything online.

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26th August 2014, 03:37 PM   |  #2  
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There is a 5v 2amp wall adapter - http://www.amazon.com/gp/product/B00...5ZD4J34NIWRZUR
26th August 2014, 04:26 PM   |  #3  
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Quote:
Originally Posted by iazybandit

There is a 5v 2amp wall adapter - http://www.amazon.com/gp/product/B00...5ZD4J34NIWRZUR

re-read the title
26th August 2014, 07:17 PM   |  #4  
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Quote:
Originally Posted by stas333

re-read the title

From what I have seen and read, the most a Qi charger will output is 1amp

That link I posted is for those who have low amperage and having issues with Qi charger.
28th August 2014, 07:31 PM   |  #5  
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I was looking for a qi car holder, tho recent feedback on different models suggests 1a qi is not enough to actually charge the G3 while using satellite navigation software, due to the drain from the gps/screen/CPU. I found that using an old 0.8amp USB charger in the car lost a similar 5-ish% an hour when used for sat nav as when using an in car qi.

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29th August 2014, 02:17 AM   |  #6  
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As hot as the phone gets on a 1A Qi charger I think you'd just be asking for a fire at 2A. I haven't found one either though.
30th August 2014, 08:12 PM   |  #7  
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I have this one and it's working perfectly.

http://www.ebay.com/itm/301216991843...84.m1497.l2649
30th August 2014, 10:06 PM   |  #8  
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Quote:
Originally Posted by 2dorr

I have this one and it's working perfectly.

http://www.ebay.com/itm/301216991843...84.m1497.l2649

we are talking about the Qi charger aka wireless!
17th September 2014, 11:45 PM   |  #9  
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I've been doing some extensive digging for a 2a Qi system myself. The highest available system is unfortunately 1a. BUT... In order to get the 1a, not only does the charger (transmitter) need to be rated for at least 1.5 - 2.0a output because of poor efficiency, but your receiver in your phone needs to be rated at a 1a output. This is why you see several people who are only charging at 600-700ma. For my Note 3, I have found a 600ma, 700ma, & finally a 1a receiver coil. The Samsung charging backplate is actually only rated at 600ma. Just make sure you look before you buy. I bought an Itian A6 charger combo and it only has a 600 also, but the transmitter I believe 1.5a. I'll just have to pick up another coil once my charger arrives. Damn China Post takes forever.

Anyway, hope this helps answer your questions. Wireless Consortium approved a medium voltage guideline and I just read that they have come out with a Qi system that is 97% efficient. Our power demands just need technology to catch up.

---------- Post added at 05:45 PM ---------- Previous post was at 04:57 PM ----------

The heat is due to the inefficiencies, most Qi chargers lose 25% of the transmitted energy, which ends up being the source of heat. The newer 97% efficient chips will be much cooler. Also a good receiver coil is thermally protected and will shut down the charge at a threshold temp. The quality of the receiver coil is the most important part of Qi. But don't forget, charging any battery rapidly will cause heat as well. There was a news story about 2 months ago of a kid who slept with her phone under her pillow and caught fire from improper ventilation. If your phone is heating up that hot, you may want to remove any case it's in. Charging up with Qi and a metal backplate isn't exactly the smartest thing to do either.

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