Battery to 100% charging off of laptop? - Nexus 7 Q&A, Help & Troubleshooting

After getting my wifes Nexus 7 rooted, romed and new kernel, I tried all of the wall chargers but it would not charge passed 45%. On a whim I chargered it off my laptop and IT IS FULL. Why?

Off the top of my head, I'd say that you have low power chargers. Do you still have the original OEM charger?
Sent from my XT1064 using Tapatalk

I started with the OEM charger, even tried her Kindle Fire charger, and two other chargers but only got to 45%.

I use a quick charger I got with my HTC works great and charges faster then OEM charger.
Sent from my Nexus7 2012 WIFI using Tapatalk

Related

KF Charging Issues? Try Nexus 7 Charger

Charging issues? Try a charger from a Nexus 7.
I have a new Nexus 7, and I was happy to find that the Nexus 7 charger is able to keep my ICS Kindle Fire fully powered at 100% battery, even when screen is left on for 24+ hours at 100% brightness.
Why not just use the stock KF charger like every kernel-related thread reminds us to do? In my case, I have the KF wall mounted to control Sonos music, and the stock charger cable is not long enough to make it to the outlet (see pic below).
[url=http://postimage.org/image/a426h0ihr/]
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For anyone with charging issues with stock charger or who wants to be able to use a longer cable run, give this a try.
PS I did a search for all threads in general with "charge" or "charger" in the title, and did not see this covered.
Awesome! Wish I had a Nexus 7. I would trash my Kindle Fire.
When life gives you tech....Make use of it.
Funny, I have a nexus 7 and for me the oem charger has a very short cable.
I picked up a couple BlackBerry playbook chargers and it works great with them. 6 ft cable as well.
Via my HTC Rezound
All of my KF charging issues went away when I simply booted into recovery and charged from there. Not ideal, but it does charge at the typical stock or CM7 speed of 30% an hour and will do until the kernel issues are worked out.
There is another thread elsewhere here in the KF area talking about amperage and how other Android chargers will not charge very fast. I saw this with my Optimus V cord, have yet to test since I started charging from TWRP.
krelvinaz said:
Funny, I have a nexus 7 and for me the oem charger has a very short cable.
I picked up a couple BlackBerry playbook chargers and it works great with them. 6 ft cable as well.
Via my HTC Rezound
Click to expand...
Click to collapse
Agreed. I used a longer USB micro cable that I got on Amazon, and plugged into the Nexus 7 charger base.
krelvinaz said:
Funny, I have a nexus 7 and for me the oem charger has a very short cable.
I picked up a couple BlackBerry playbook chargers and it works great with them. 6 ft cable as well.
Via my HTC Rezound
Click to expand...
Click to collapse
Yeah the N7 cable is pretty short.

Nexus 7 & Phone Charger

I have a droid razr and that phone comes with a phone charger that has 2 usb ports on it so you can simultaneously charge 2 devices. Last night I ran both my droid razr maxx and my Nexus 7 on that charger. I woke up in the morning after about 7-8 hrs of charging to find that my nexus 7 had only charged to approx 40% over night while my razr was completely full. Did this happen because I was not using the nexus "stock" 2amp charger or are there other issues at play here? Thanks for the replies.
I use my Samsung phone charger because it's the one plugged up beside my bed. I'm pretty sure it is a 1.0 amp and it charges just fine. I also use my Samsung car charger with the N7.
fosser2 said:
I have a droid razr and that phone comes with a phone charger that has 2 usb ports on it so you can simultaneously charge 2 devices. Last night I ran both my droid razr maxx and my Nexus 7 on that charger. I woke up in the morning after about 7-8 hrs of charging to find that my nexus 7 had only charged to approx 40% over night while my razr was completely full. Did this happen because I was not using the nexus "stock" 2amp charger or are there other issues at play here? Thanks for the replies.
Click to expand...
Click to collapse
Unless your charger can provide at least 1A to both ports simultaneously, then it's probably a 1A charger but the 1A is split between both ports (effectively making it 500mA to each port when both ports are in use). It's been determined that with the stock cable, the Nexus 7 can only draw 1A (even though it comes with a 2A charger) so to get the same charging performance as the stock charger, your other charger should provide at least 1A to whatever port it's plugged into.

Nexus 4 wireless charges plugged in 24x7

Hey guys
I got the same wireless charger and have attached to spike guard near my PC . will there be any harm to charger plugged in all the the time.
Thanks
Jaack
Sent from my Nexus 4 using Tapatalk 2
epicjaack said:
Hey guys
I got the same wireless charger and have attached to spike guard near my PC . will there be any harm to charger plugged in all the the time.
Thanks
Jaack
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I have all my wireless chargers plugged all the time. During the week, at work, I have my phone on the orb at least 8hrs a day, so don't worry about the phone. The wireless charging on the N4 will stop and discharge once at 100% and will start charging when the phone reaches ~95%. Keep in mind at 100% it still says charging if you use anything like the battery extension in dashclock and uccw widgets, but really it's topped off.
Hope not because Ive never unplugged any of mine. None of the 3 orbs or the cheap fasttech one I use at work and none of them have issues. The wireless charging systems are aware and shut-off when no phone is engaged, that is why ones with lights light up when your phone is on them.
However, just like classic "wall warts" the transformer box plugged into the wall will continue to draw power even if the phone isnt charging. So you will see power consumption on your bill.
Thanks love my wireless charger
Sent from my Nexus 4 using Tapatalk 2

Anyone else having charging issues?

Left phone charging overnight and woke up this morning at 53%.
Using Stock USB cable and ac adapter charging through the wall.
The charger is usually fine and I wake up at 100%. Once or twice I'll wake up with around 73% which is fine.. but at 53%, aint nobody got time for that.
Anyone else have same experience? Any fixes?. Running PA and Franco latest.
Thanks
xpendmt and
br0ok1ynb0i said:
Left phone charging overnight and woke up this morning at 53%.
Using Stock USB cable and ac adapter charging through the wall.
The charger is usually fine and I wake up at 100%. Once or twice I'll wake up with around 73% which is fine.. but at 53%, aint nobody got time for that.
Anyone else have same experience? Any fixes?. Running PA and Franco latest.
Thanks
Click to expand...
Click to collapse
Just recently started having this same problem. When I notice it happening, I can see the charging indicator flipping on and off rapidly.
I use an HTC charger from my old desire and haven't had any issues.
Not even took the nexus 4 charger out of the box.
Try a different charger.
Sent from my Nexus 4 using Tapatalk 2
br0ok1ynb0i said:
Left phone charging overnight and woke up this morning at 53%.
Using Stock USB cable and ac adapter charging through the wall.
The charger is usually fine and I wake up at 100%. Once or twice I'll wake up with around 73% which is fine.. but at 53%, aint nobody got time for that.
Anyone else have same experience? Any fixes?. Running PA and Franco latest.
Thanks
Click to expand...
Click to collapse
I had this problem with the stock charger and cable. Ordered a new (and official) LG USB cable and still had the same problem. Oddly enough, if I use the USB cable from my old Atrix charger with the LG stock charger, the issue disappeared and I have not had it happen since.
No idea if this is a problem with the charger itself, or just cheap USB cables
I had this problem 2 months ago. It's definitely the charger. I replaced it with a cheap travel charger and have no problems.
Sent from my Nexus 4 using xda app-developers app
Stock charger is useless, use a different one... preferably without detachable USB cable. Seems like you're getting what I used to before I changed chargers, "USB charging" when you are plugged into a wall outlet.
for me, the charger was fine. The cable is what is failing. Maybe it wasn't made to usb spec. Sometimes when plugging in, I notice it starts USB charging and not A/C charging. I installed a battery widget that tells me what charging mode it is in so I kept a watchful eye on that. After using a different cable (with same charger), I've never had this issue again.
negroplasty said:
Stock charger is useless, use a different one... preferably without detachable USB cable. Seems like you're getting what I used to before I changed chargers, "USB charging" when you are plugged into a wall outlet.
Click to expand...
Click to collapse
The same thing happens to me, I have to use my old blackberry charger
stock charger is horrid
calanizzle said:
The same thing happens to me, I have to use my old blackberry charger
stock charger is horrid
Click to expand...
Click to collapse
Is it okay to use you blackberry charger? Does it impact battery life?
mynameisrio said:
Is it okay to use you blackberry charger? Does it impact battery life?
Click to expand...
Click to collapse
Should not affect it...
Its just the cable its cheap try a diff cable i use my htc sensation cable but with the stock box charger this phone came with
Sent from my Nexus 4 using xda premium
Are you on stock rom? When I first got my nexus it was on 4.2.1 I noticed that if I left the phone on the charger or was using it while it was charging the % number would go down.
Flashing a custom rom and kernel fixed these issues.
Changed the usb-AC adapter to my iphone one while using the same usb wire and its working fine now.
Mine started doing this yesterday but wasn't using the stock charger. I rebooted the phone and used the lg charger and cable and phone has been fine sine.
Sent from my iPad using Tapatalk HD
I had this issue before where the stock battery graph would sometimes show USB charging even though I'm using the wall charger. It would sometimes flicker between charging and not-charging as well.
I replaced the LG USB cable to a generic micro USB cable from ebay and the issue hasn't repeated ... so far.

Slow charge???

At what mA should the Nexus 4 be charging?
With current widget, and the same charger, my phone charges at 200mA, my wife's at 600-700mA. This is using the USB wall charger from LG
I switch to a wall charger and mine goes to 400mA.
My phone charges so slow
Sent from my Nexus 7
It's normal. Mine charges slow as well.
pnut22r said:
At what mA should the Nexus 4 be charging?
With current widget, and the same charger, my phone charges at 200mA, my wife's at 600-700mA. This is using the USB wall charger from LG
I switch to a wall charger and mine goes to 400mA.
My phone charges so slow
Sent from my Nexus 7
Click to expand...
Click to collapse
With no background apps running, my Nexus 4 charges around 800mA until it reaches about 80%, when it starts to ramp down until battery is fully charged.
Thanks. It seems so weird that my wife and I have the same phone, same setup , and hers seems to charge twice as fast.
Mine is always 200mA and hers is 400mA, or when mine is 400mA, hers is ~700mA
I'm going back to complete unrooted stock. See what happens.
The only difference is my phone is newer than hers. Her phone was out of the original batch, mine is very recent. For example, hers is original, mine had the nipples at the bottom to prop it up for the speaker.
Sent from my Nexus 4 using Tapatalk 2
Went back to complete stock.
Wife's = 800mA
Mine = 400mA
Crazy
Sent from my Nexus 4 using Tapatalk 2
Stock charger sucks, sometimes charge goes as USB and not AC. I have to re-plug
normal. that's good things. almost all old android device charge very quick. sometimes 30mins for 86/100 battery
but the temerature is getting high either. so if you charge slow ,that 's a good things
calanizzle said:
Stock charger sucks, sometimes charge goes as USB and not AC. I have to re-plug
Click to expand...
Click to collapse
It's true, stock charger generate a lot of issue imho. I swap to my old HTC desire charger and all fine now
Inviato dal mio Nexus 4 con Tapatalk 2
try charging your phone when your battery is like ~10% or so.

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