mmmmBacon,I really appreciate the effort that you have put into this comparison.. I’m curious if you or someone else can help me understand a problem that I am having with my Note 3, its QI receiver and a 5v/1A QI charging base that requires a 5v/2A source. When I set it up the phone appears to connect and disconnect. It stays on for 3-5 seconds and may momentarily disconnect (or take 5-10 seconds to reconnect.). The blue charging/connected indicator on the base remains on but does appear to flicker. Both the base power lamp and the base charging/connected indicator lamp are very dim but I believe that that is the design. This is a charger that I bought on eBay from a Chinese vendor. It is the flat rectangular type with two indicator LEDs that you can’t see unless they are on.
I have tried the phone on a different QI base and it remains connected so I believe that I have exonerated the phone and the charging receiver.
I have used two 2A micro USB AC adapters and one 2.4A micro USB AC adapter. Each performed the same. Out of sheer frustration, I tried a 180ma charger and it too had the same performance.
I have a video that demonstrates the behavior posted on photobucket but, as a newbie, I can't post the hyperlink. Feel free to email me for it.
(Sorry it is so dark)
Questions that come to mind:
1) How likely is it that the base is defective?
2) Can the USB cord affect the amps delivered to the base? (Even though the indicator lamps light up?)
3) Is this behavior indicative of any particular problem?
Mike
Well I can't answer specific information with regards to that phone/receiver combo as I did all of my tests using my Nexus 5, but for general information I can do my best to help you out.
What USB cable are you using? You didn't specify that part, so that may be a cause of your problems as well. The AC Adapter is very important, but if you do not use a USB cable that supports a higher current, your Qi Pad won't receive the proper power regardless of if you have a 2A or 10A AC Adapter. Many cheaper cables that ship with Qi chargers don't support anything higher than around 500mA. So despite a 2A Adapter, the Qi charger is only receiving a 500mA current, that in turn will barely power the Qi charger (if at all), let alone provide any decent output current.
What you described with the lights flickering on and off and difficulty connecting/staying connected to me sounds like it is either being underpowered, or unfortunately is a defective unit.
So for your questions:
1) If you have tried everything; powering the charger with different AC Adapters, different USB cables, and the phone works on a different Qi Pad, it is likely that the one you received is defective unfortunately.
2) The USB cable absolutely can affect the amps delivered! That's why in the OP I mentioned the first thing I did was replace the USB cables with better cables. If you have a good AC Adapter, you also need to have a good USB cable as many cheaper cables will only support around 500mA, regardless of how much current is available.
3) The behaviour to me seems like it is either being underpowered or is defective. Hopefully it's the former and not the latter. If you haven't tried different USB cables, see if you can get your hands on one that you know supports a higher current. If you have already done that, then it is most likely defective and you should ask for a refund or replacement.
In the first post, you mention replacing the cables with good quality ones.
My kids keep breaking the cheap ones I find.
Who has good quality cables?
What do you recommend size wise?
I've used 3 ft and is it 6 ft?
Links if you have them. US preferred. Thanks.
Since you are in the US, the cheapest solution for cables that support a high current are the
Monoprice Premium USB Cables. Make sure you choose the
Premium cables, as their normal ones do not support a high current. They also have lifetime replacement warranty on their cables, so if you have any issues they will send you new ones free.
Also, you need to make sure you have a good AC Adapter that provides enough power to the Qi Charger.
I made a thread about the
1.8A Blackberry Folding Blade Charger. If you don't want to worry about finding both AC Adapters and Cables separately, it is a good all in one solution for powering most Qi chargers (as well as charging your phone ridiculously fast if necessary). It is also very cheap since you live in the US. $5 for 2, or $6 for 3.
I mentioned that I only use them for my 1.5A input Qi chargers, but I had absolutely no problems using them as well for my 2A input Qi chargers. They seemed to be fully powered and working the same as using my 2A AC Adapters.