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Charging unable to keep up?

When I'm using google navigation in the car and the screen is inevitably on full brightness I expect the battery to drain really quick. So I plug in the car charger expecting all to be fine - wrong! The battery still goes down - just not as quickly.
If I am on the road for about 6 hours the battery will go flat. My car charger is 800mA so it should be no problem.
Is it just mine?

My Epic was the same way under heavy load.
Sent from my Nexus S 4G using Tapatalk

Never had that problem with my Nexus One and would be surprised if the Nexus S exhibited that behavior. But my Nexus One dock came with a 1000mA charger.
Sent from my Nexus One using Tapatalk

It's pulling more than the charger can keep up with. A beefy charger like ones for the ipad might help but unknown how much. Griffin makes some that can output over two amps. Look at best buy. Make sure you check the output ratings. Some might be more than others. You will have to use a usb data cable as the cord because the one I'm talking about has standard usb female on the other end of the adapter. Griffin power jolt.
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This particular one has led that glows red when full charging and green when trickle. There's different models.

The Nexus S isn't even close to how bad the Epic was. A road trip with Google navigation on, and the screen low would eat at the battery. Heavy use in general would eat at the battery. All while the screen brightness was at like 15%. I felt like the phone was always in a constant state of charging, except overnight when I slept.
Nexus S isnt even close to that bad. I wouldn't even define it as bad at all. Just normal. I would just avoid maxing out the screen brightness. 25% is normally enough in 80% of your situations.
Sent from my Nexus S 4G using Tapatalk

I use a 1.2A charger in the car and also have this problem. Only with Navigation + max brightness. If I drop the brightness (at night) I can stay ahead of the drain.
This was also an issue with my Vibrant so I was not surprised to see it on the NS as well.

I read in one of the posts about an app called battery monitor widget. It has been a helpful tool to monitor the charge discharge rates. I highly recommend it. You know when the phone is truly idling and when something is pulling down on the battery even when you're just sitting at the home screen doing nothing.
I haven't found a useful essential app for a long time until I stumbled across this.

I've had the same problem on the stock charger O.O! You would think that the one that came with the phone would be able to handle it running as a wifi hotspot but it doesn't. My old phone, an HTC Desire, never had a problem keeping up.

Yeah Samsung phones takes too long to charged I though my evo was bad cause I came from an ip
hone, which charges in an hour (80%) and now battery kills me in this phones
Sent from my Nexus S 4G using Tapatalk

jmoney579 said:
I've had the same problem on the stock charger O.O! You would think that the one that came with the phone would be able to handle it running as a wifi hotspot but it doesn't. My old phone, an HTC Desire, never had a problem keeping up.
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Click to collapse
Sounds like the crappy 3G/4G/wifi is the culprit. I believe when they fix the signal issues battery drain will be reduced.
P.S. Come on Google... WTF!

I noticed the USB connection will not keep up, but the AC connection will. I know that doesn't help in the car, just an observation.

deputybubba said:
I noticed the USB connection will not keep up, but the AC connection will. I know that doesn't help in the car, just an observation.
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A lot of car chargers output like ac chargers..like what came with my car dock.
Sent from my Nexus One using Tapatalk

Guys, make sure it's charging in AC mode so charging can keep up with the discharge rate. You can see whether it's in USB charging mode or AC in About phone > Status. If your phone is in USB charging mode while plugged into the car charger, it means the D+/D- pins of the charger cable is not shorted.
You have several choices:
1) Open up the charger and find the USB wire solder point, short D+/D- (usually the middle two of the four pins) with a soldering iron.
2) Skin the USB cable/wire, cut the D+/D- wire (hopefully you know which two), and short the openings.
3) Buy a male and a female USB connector, solder the two together, but short D+/D- on each side.

Nexus 4 gets really hot when Qi charging.

I got my Qi pad yesterday in; this one specifically:
http://www.ebay.nl/itm/380712337929
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But the phone gets extremely hot after a short time. When charging by wire it's a little higher than the environment temperature: 22-25C = 71-77F (depends on trickle charge or duration charge of course), but when charging it over the Qi Pad the battery goes up to 42C=107F (and it went hotter the night before, but didn't check the temps back then).
I also notice it really jumps in terms of magnetic field. Now it's a minute I receive about 60 microTeslas of magnetic field, then it's a minute with 200 microTeslas.
Is this a normal for Qi charging? or is there something wrong and rather shouldn't use the pad?

how do you detect how strong your magnetic field is?

convolution said:
how do you detect how strong your magnetic field is?
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https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2
Great toolbox honestly, tried a few, foumd this one to be so good I bought the pro version to support the dev. Temps might be a pro-only feature though, not sure.
And lol you already knew the app as you put it in your copied GPS fix guide.

The temperature range you provided is typical of induction charging. My N4 tends to be in the 100-110F range while charging wirelessly. Some heat is generated/energy is lost when transferring energy via induction.
The phone will communicate with the charger to draw the right amount of current depending on the battery state.

wx27 said:
The temperature range you provided is typical of induction charging. My N4 tends to be in the 100-110F range while charging wirelessly. Some heat is generated/energy is lost when transferring energy via induction.
The phone will communicate with the charger to draw the right amount of current depending on the battery state.
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Alright, then I know there is nothing wrong with the pad. It's a cheap chinese one after all.

even with the nexus charging orb, my nexus4 gets hot when using it. i think it's normal for the head to dissipate across the phone and the charger

That's a weird looking foot.
Sent from my Nexus 4 using Tapatalk

i use my gf's samsung qi charger and its the same. i dont know the exact temperature but i usually have to let it sit off charger for a a few seconds before picking it up as the back is extremely hot to touch.

alright, then I know it's normal, but I doubt it's healthy for the battery lifespan :/. Batteries usually degrade a lot when exposed to heat.

Wireless charging

Is it possible on X2 ? I see wireless charging receivers available for Android devices without Qi built in. Anyone know if one could be used with the X2?

Yes there are wireless chargers out there will work with any device that has a metal body.

I thought the receiver had to be on contact with the battery... But if not great... Can you send me a link please to some suitable wireless chargers? thank you

It is interesting were to find a wireless charger for X2, anyone has a link where to buy one?
on the other hand, is it possible to fix NFC in the Mediapad X2 ? It would be great

The misinformation in this topic is large...
Wireless charging normally uses phone's with a plastic case because the coils on the inside ( its induction charging ), capture the energy and transfer it to the battery ( using specific electronic ).
The problem with phone's like the X2 is that there backside is metal. Metal will disrupt the induction charging ( technically it will turn your phone into a hot plate for cooking ). Qualcomm has some technology to enable wireless charging with a metal case phone but its more or less proof of concept. I do not remember if anybody is using this now.
But you can NOT do wireless charging without the correct technology in the form off:
a) integrated in your phone = a coil + a bit of electronics that connects to your phone's charging
b) a external coil that connects to your usb port ( like a external charging case ).

Yes, without nfc built in, the best bet is the external coil pack with a connection to the micro-usb port.

Right now only something like this will work.
http://www.qiwireless.com/wireless-charging-htc-one-m8/
You can use a opaque case to hide this stuff behind the phone back.

bark1234 said:
Right now only something like this will work.
http://www.qiwireless.com/wireless-charging-htc-one-m8/
You can use a opaque case to hide this stuff behind the phone back.
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3 remarks:
1- I'm not sure that even if the back metallic plate of the phone is not between the coil of the charger and the one of the receiver, it will not heat (and eat the efficiency) under the magnetic field.
2- Those Qi usually produce <500mA to the battery, quite slow with ordinary phones, imagine with the 5000mA one of the mediapad X2
3 As the USB is at the bottom extreme right of the phone, the recievers with a USB connection in their middle will not fit.

I have tested the rear of the phone and it does not appear to be magnetic and if that is the case then a qi mod is highly possible. With the research I have done, aluminum is okay, like the iphones are made of powder coated stainless steal so it would not work on them. I found a 1amp charger n amazon, I don't believe they make anything bigger because of heat. 1amp takes longer but it works.
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http://forum.xda-developers.com/oneplus-one/general/internal-wireless-charging-t2819398/post54785723#post54785723
http://www.amazon.com/KingMas%C2%AE-Universal-Wireless-Charging-Receiver/dp/B01193R14O/ref=sr_1_14?s=wireless&ie=UTF8&qid=1453963091&sr=1-14&keywords=qi+receiver

It works fine with no issues. Only problem is the X2 usb is off to the side like someone mentioned.
I use the http://www.aliexpress.com/item/QI-w...-7D-503L-7D-501u-MediaPad-X1/32389792024.html
You have to request the usb version that is reversed (For the X1 and X2)
I also made a car holder with the Qi built in. (.stl provided) However the fine tuning of where you have the Qi adapter on the phone is a pain.
The sensitivity is tough, hitting bumps will make it go off and on, but no big deal.

Anyone ever find QI wireless charger receiver for X2? As mentioned in previous posts - all the ones out there have the USB plug in the middle, which doesnt fix the X2

Apo11on said:
Anyone ever find QI wireless charger receiver for X2? As mentioned in previous posts - all the ones out there have the USB plug in the middle, which doesnt fix the X2
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Bump...anyone?

Choetech NEW Fast Wireless Charger Review

Hey guys, here's my review of the Choetech Fast Wireless chargers.
I was provided these chargers at a discount for my fair and unbiased review. 1st I'd like to thank Choetech for their customer support and openness with my feedback. In my experiences with these chargers I had a bit of mixed feelings. I really really really wanted to like them. And while they worked fine some of the time, I still have been experiencing many issues which I will list below.
I was provided the round charger and Choetech charging adapter, then provided the newer version, the square charger. This was for my Samsung Galaxy S6 Edge+
1. Overheating (round and square) - there have been a number of times I've picked up my phone off of these chargers and it's been 103 degrees Fahrenheit. In my opinion that's too hot and I worry about phone/battery damage.
2. Charging stopping/starting (round and square) - I have mainly experienced this with the round charger. The newer square one still did this but not near as much. The charging would continuously pause and restart as much as 5-6 times in a minute.
3. Not charging at all (round) - sometimes I'd place my phone on the charger and nothing would happen. I'd move it to dead center and still nothing. It wasn't until I unplugged the unit then back in until it started working again.
4. Slow charging (round) - multiple times I'd place my phone on the charger and it would only go up 4 percent in 2 hours...
5. Charging seemed to stop at around 75% sometimes and just stay there. (round)
6. Charging light blinked (round) - not sure what this was about but many times it would just sit there and blink green.
7. Overnight charging seemed to stop (round) - I'd wake up to a blinking light and my phone would not be at 100%. Usually between 75%-95%
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In all I definitely feel the square charger worked better, however at this point I can only give it a 6 out of 10. Choetech seems to have great customer service and the build quality of their products look to be great. There just seems to be a few technical bugs that need to be worked out.
That being said, I will say that my Samsung Wireless Charger also experiences a few of the above mentioned issues mainly numbers 6 and 7. So who knows if it's the chargers, my phone, or just bad technology in wireless charging. I will say I'm pretty bummed and was expecting better for a phone I've paid so much money for.

I have been using this pad for a few days now, and I love it. Compared to my OEM Samsung charging pad it is spot on.
Love the build quality and ergonomic design. I appreciate the fact that is very thin and has very sticky pads on the bottom that don't allow it to slide around on my nightstand.
I've even used this in my car and the pad did not slide around or move.
Another great feature is the non-intrusive LED light, because of this it has earned the coveted spot on my nightstand. The Samsung one as well as another QI pad I have both have really bright and obnoxious LED lights. This makes use of them on my nightstand very unlikely. I can't stand that bright LED in my face. Choetech pad has one small LED that can be pointed away and doesn't bother me one bit.
Furthermore, the cable that came with the unit is superb, seriously something as simple as this can really enhance a product. The cable is thick and solid feeling yet very soft and flexible, this is a big plus in my book.
Can't say enough good things about this charging pad, it looks great, charges fast and works well with my S6 and Note 5. Even the packaging was very well thought out, like something you'd expect from Google or Samsung.
Solid thumbs up from me, I highly recommend this product.

Thread closed. Duplicate.
http://forum.xda-developers.com/s6-...choetech-wireless-fast-charger-brief-t3216087

Noob asks: What is POGO and the Samsung Xcover Pro

POGO: I have Googled but cannot determine if it is a generalized interface type, a standardized proprietary plug/jack, an clever acronym, who knows. Would some kind soul point me at a tutorial?
Samsung Xcover Pro: Because I want a rugged smartphone with a removable battery and no bloatware, I got one of them. It's common else where, but not in the US. It's been my smartphone experience that one of the smartphone weak spots is the connection, which gets plugged and unplugged so many times, is around and collects crud...and when it fails, you are SOL. This phone has a POGO plug. Is there a USB to POGO cable for this phone? Since the US market presence is so small, you cannot even buy the replaceable battery, you have to get it shipped from Europe. Gamber-Johnson makes a nice cradle with a POGO connection for this phone, for a mere <gasp> $150
I know, I know, I am a masochist who always takes the path of greatest resistance (to say nothing of impedance and reluctance).
Maybe the simplest thing would be to get a magnetic USB-C cable to preserve the socket on the phone.

It's called a POGO because of the gold-plated pins. They are spring-loaded like a pogo stick. They are used in applications where a drop-in cradle provides support for the device that's to be charged.
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I would like to 3D print a cradle for my Xcover Pro. For now, I am also using a magnetic USB-C solution.

rdwilson713 said:
I would like to 3D print a cradle for my Xcover Pro. For now, I am also using a magnetic USB-C solution.
Click to expand...
Click to collapse
I have purchased a Samsung Xcover6 Pro and I'm also looking at 3D printing a dock. Did you or anyone else find any electrical details of the POGO pins? Can we just apply voltage to the pins (in which polarity?) or is there a communications protocol required to enable charging?

Apologies everyone. I didn't think to check Thingiverse. There's a design here and it appears to accept voltage with VCC left and GND right.
XCover Pro Pogo Charger by xnappo
Remixed from @julvr's excellent work for XCover Pro. I used these pogo pins:https://www.amazon.com/gp/product/B07FQ52W88/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1 (and I have a lot of them so....) 9V is needed for Quick Charging - could support higher but 9V should be safe for now. Once...
www.thingiverse.com

Good find! I ended up buying a commercial unit from KOAMTAC. It was expensive but I do not regret it after more than a year of use. The charger for a spare battery was a plus.
https://www.amazon.com/KOAMTAC-1-Slot-Charging-Cradle-XCover/dp/B084KXP3BP

EDIT: oops..never mind...just realized I was looking at a different phone model..I'm a tool, lol.

I can report that I have designed and printed a cradle for my Xcover 6 Pro but the tolerences are very tight and it requires fiddling with the position of the phone to get it to work. I initially used a bench power supply which resulted in good charging speed but I connected to the positive and negative of an old broken (phone end) USB lead and I am getting slow charging speed from a USB charger. I assume that some circuit is required on the data pins to enable high current on a USB outlet. I have tried several USB power supplies.
EDIT: I have replaced the USB cable with a 5V 3.5A PSU (non USB) and AccuBattery is reporting ~6.5W charging speed.
I can also confirm that there is no increase in charging speed between 9V and 12V and charging shuts down at 12V.

Typical way of enabling fast charging is to short the USB data pins together, but this maxes at 1.5amps by USB spec, or 7.5 watts. Beyond that you're getting in to data signals to negotiate higher charge rates.
A fairly decent explanation is here - https://microchipdeveloper.com/usb:bc12