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Wireless charging options for the Nexus 4

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#41
The Soup Thief

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So connecting it through a mains timer plug, set to click off and on again at 6am might work for overnight charging - giving it a full charge then a final boost. Shame they all seem to have this issue

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#42
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Tiddly little wireless charger - less than £15!
They claim to be compatible with the N4

Posted Image

I just ordered one of these Metrans Wireless Chargers
Also available from Dealextreme
Stupidly cheap - it'll probably take a few weeks to get here but I'll let you know if it's any good when it arrives

Edited by The Soup Thief, 21 July 2013 - 09:21 PM.

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#43
tdroza

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Tiddly little wireless charger - less than £15!
They claim to be compatible with the N4

Good find! I've just ordered one from DX. If it works as expected I'll probably get another at this price - one for my desk at work and one for my bedside table.

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#44
arnoldziq

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Recently, I bought on eBay a cheap charger produced in China.
It cost me £14.04 included "free" shipping from Hong Kong.
I am very pleased with it. So far, this is the only wireless charger that has been able to charge the battery through my rubber case and stuck to it metal plate used for magnetic holder.

Attached Files


Edited by arnoldziq, 24 July 2013 - 01:51 PM.

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Google Nexus 4 (stock)
Unlocked Orange Monte Carlo 16GB with o2. Z3 ROM.

#45
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W00t! My Metrans charger arrived today!
First impressions? It's tiny! Very neat, feels solid. Came with a nice (white?) usb/micro-usb cable.
Will test it out this evening and report back
Anyone know if there's any way to switch wireless charging off and on from the phone side? Google seems quiet on the subject
Actually, I guess it's pretty much an electromagnetic process between the charger coil and the phone's coil, so it may not be turn off- & on-able.
The slight problem with these things is (I've read) that they charge to (or near) capacity then stop charging, so by morning your phone may have discharged by 5-10%.
My fix for this was to have Tasker turn wireless charging on at 3am (or so) then by 6 my phone would be at 100% in time to get up & go, without losing any power, as it would if I set it to charge from 11pm (reaching max c. 2am then discharging til 6). But that won't work if the phone can't turn charging off & on.
New, less elegant fix is to use a timer plug to turn the mains AC to the charger on at 3 am or so.
Again, I'll report back

Edited by The Soup Thief, 06 August 2013 - 07:09 PM.

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#46
Stuart_f

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You are probably already following this thread on XDA http://forum.xda-dev...2360202&page=11 quick summary:

Qi wireless charger should charge to 100% then switch off and come back on again around 96% keeping the phone in the 96-100% range forever.

If you see it get to 100% then switch off and never turn back on again then it's most likely because you are plugging it into a 5v 1A mains charger, try it with a mains charger that can produce 2A and it'll work properly. The stardard N4 charger is only 1A and is known to have problems with this device.

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#47
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Cheers for the pointer
Was following that thread but took my eye off the ball!
Have ordered a 2A USB charger from Amazon.
Let's see what they deliver
With the 1A chargers I have, charging seems a bit slow unless the phone is powered off.
When this is done, it charges really quick (and keeps its charge til morning as Stuart_f points out) - it's just a PITA to have to shut down and boot up.
With the case on and phone on the phone registers as charging, but the battery level doesn't increase. Presumably there's not enough power going to it - using a 2A charger should make the difference, but again I'll report back.
Once more - I can't get over how tiny this thing is - 6cm in diameter by 1.2cm tall! That's roccoculous!
The LED is a bit on the bright side but a bit of insulation tape has sorted that

EDIT
I really need to learn to RTFM, or at least what it says on the side of the box:
Posted Image
Not surprising that it's been a bit dicky with only 1A going to it. Reassuring that a bunch of other people made the same mistake
Also I found that it charges more reliably (quickly?) since I reverted to stock 4.3 kernel (previously on franco kernel v 174)

Edited by The Soup Thief, 10 August 2013 - 08:19 PM.

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#48
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Dislike the phone's "connected" sound when wireless charging starts? Using Cyandelta or similar (so even if you delete the sound in the media folder it comes back when you update your firmware)?
You need Ultimate Sound Control http://forum.xda-dev...d.php?t=2482155
Really handy - allows you to turn each system sounds on /off. Pro version (free for a few days at the above linky) also lets you change the sounds, to play different noises without the need to switch files with a file explorer each time you update.

Bloody quiet in here at the moment, ennitt?

Edited by The Soup Thief, 14 October 2013 - 05:53 AM.

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#49
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Another tip shouted into the empty room...
Struggling with wakelocks and battery drain after wireless charging?
Dzo at xda has a neat fix http://forum.xda-dev....php?p=46343147
Reckon you need to re-run it after a reboot, but it's working for me for now

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#50
thriddle

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Some of us are reading with interest, even if we're not messing up the thread with useless thanks.

But thanks for all the research, I hope to be making use of it soon!

I think the main reason the N4 forum is quiet is that the stock phone is just so darn good there's no real need to mess with it. A big contrast to my (much-loved) ZTE Blade, where I was constantly trying something new. :-)

A cheap and reliable wireless charger would be most welcome, however.


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#51
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Hi thriddle - good to hear someone's finding this helpful!

There really is virtually nothing non-obvious to choose between these wireless chargers - they all work in the same way, so the problems appearing with the cheap as chips pucks (eg setting up wakelocks etc) are just as likely to show up with the fancy Google Orb.  Potentially the orb might be a bit more efficient so you might not need a 2A charger (though I'm not sure on this) but really if you get a super cheap device with a 2A charger (total cost, about six quid if you shop around) you'll be golden.

Of course, you'll still have the wakelocks to content with, but there are workarounds for that.

Interesting to note that the N5 appears to have 4 little magnets around the wireless charging coil, whose purpose is assumed to be to connect to 4 magnets on a charger to ensure the coils line up niceley for optimal charging.  Apparently some old Blackberry device had a similar set up.


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