Database Info

Battery uncertainty?

To all with your new toy, the beautiful Raphael. Ive got a couple of battery related question. Does the battery run out quickly? how long would a full charge last you and what type of usage are we talking about. I know its still early days and testing hasnt really been done, but my touch pro battery uncertainty is the only thing holding me back from breaking the bank.
Cheers

I'm getting about 2 days out of mine with light usage and push email enabled during business hours.
The user interface is a bit of a learning curve - may need tweaking a bit once the chefs get cooking!!!

From experience, it takes several charge / discharge cycles before you get the max out of a battery, even with Li Ion, however not as bad as the old NICAD's !

I am charging it throughout business day (day 3 now) with the USB cable whilst connected using Active Sync. This seems a slower charge as you would expect and by the time I leave the office it is fully charged. I have only charged it once from AC power and that was when I first got it.
I will charge it from the AC again over the weekend without any intermittent USB charge and let you know next week how well the battery lasts!

b0yce said:
I am charging it throughout business day (day 3 now) with the USB cable whilst connected using Active Sync. This seems a slower charge as you would expect and by the time I leave the office it is fully charged. I have only charged it once from AC power and that was when I first got it.
I will charge it from the AC again over the weekend without any intermittent USB charge and let you know next week how well the battery lasts!
Click to expand...
Click to collapse
USB charging will be slower - generally the max current from a USB hub is 500mA shared between each USB port. he mains power supply is rated at 1A.
Have you noticed the illuminated HTC log on the power supply?

ardsar said:
Have you noticed the illuminated HTC logo on the power supply?
Click to expand...
Click to collapse
Yes how cool is that! First thing I checked, because when charging it from AC and phone not switched on, I couldn't tell whether it was charging and then noticed the White Logo! Then later noticed the dial on the phone swirling round as well!

Mine doesn't seem to be lasting very long, I only got it about this time yesterday. I fully charged it before I even switched it on, by about 11PM last night I was getting battery low warnings, Charged it overnight and I was getting battery low warnings by about 12:30 this afternoon again It's now having its third charge in 24 hours!!!
Maybe I'm just using the damn thing too much!

Car Chargers and Charging Question...

I was curious about car chargers and I heard back in the day that if you use a car charger its actually bad for the battery because the power from the car isn't a constant "flow" is that true? Second question is it bad if you leave your Fuze/Touch Pro plugged charging for over 8 hours a day because im at work Mon-Fri and I just leave it plugged in so I was just curious if it will lessen the life of the battery..? Sorry if its dumb questions just curious

I personally use car charger as my main charger.
i used it also for the Herald and TyTnII... and i didn't feel any battery problem.
however you should pay attention for the charger brand/make.
i advise to have the original HTC one.

sguerra923 said:
... that if you use a car charger its actually bad for the battery because the power from the car isn't a constant "flow" is that true?
Click to expand...
Click to collapse
during the start of the engine, the voltage level may drop and the charger may stop charging, but during the time you drive, there's no problem.
The generator produces about 100 A, so the 500 mA or 1 A current of your changer do not matter

So what if you charge you phone for long periods of time even though battery is fully charged? Any neg effects?

sguerra923 said:
So what if you charge you phone for long periods of time even though battery is fully charged? Any neg effects?
Click to expand...
Click to collapse
It's not good for any battery to do that, but usually you go into trickle mode, which protects the battery (I don't know if the charger or the phone controls that). Over-charging batteries is one of the things that kills them. You can tell on your phone when it's in trickle mode, because the LED around the scroll wheel stops blinking (well, I think that's the notification for trickle mode-could be wrong).

Farmer Ted said:
It's not good for any battery to do that, but usually you go into trickle mode, which protects the battery (I don't know if the charger or the phone controls that).
Click to expand...
Click to collapse
The phone. Otherwise you couldn't charge via USB

I think the "don't charge in your car or you'll damage your battery or phone" is mostly an urban legend. Yes if you buy a crappy USB cig adapter that doesn't provide stable 5v then good luck. That said, even cheap adapters should be able to provide a good 5v source. 5v regulators have been around for ages. I bought them by the dozen 20 years ago when I was a teenager starting to play around with electronics. Even back then, they were less than a buck each if bought in bulk. So stable 5v supplies are not hard to come by. Voltage dips during startup isn't much of a problem either since regulators (even modern switching ones) only requires 10-20% headroom to operate which means as long as you are seeing 6-7v at the cig adapter, you're good. Your car wouldn't even start if it dipped that low. More likely an issue is the voltage spike that might occur right after the engine starts and the alternator kicks in. Most decent regulators will handle those as well. Chances are, you'll blow your adapter before anything damaging goes to your phone.
Recharging batteries requires a "fixed" current source. Modern rechargeable batteries (Li-Ion, Ni-Mh, etc) have charging profiles for optimal charges. That just means they need different currents at different stages of their charge cycle. It became clear pretty quickly that it was better to build the charging circuit into each device which did the best job for the battery it was designed for. That's been the case since the early mid 90s I think. What this means is that pretty much all devices built to be rechargeable (whether the battery is replaceable or not) only requires a simple consistent voltage source. This is why we have the "Universal" chargers today and why they are so cheap. I would still not pay $20 for one though. I'll spend 10 to get the generic brand which is just as good without the brandname on the package. The funny thing is, most of these power supplies come from just a handful of overseas manufacturers so you might be getting exactly the same thing. The only one's I'd avoid are those really cheap ones like the like the ones you might see on ebay. Most of them are actually good but some less reputable sellers might have gotten reject stock form somewhere and is selling them. These units are rejected because they didn't meet voltage/current specs and the person that was supposed to throw them out sells a huge box of them to someone for $50 or some such.

sguerra923 said:
Second question is it bad if you leave your Fuze/Touch Pro plugged charging for over 8 hours a day because im at work Mon-Fri and I just leave it plugged in.
Click to expand...
Click to collapse
Li-On batteries dont really have a problem with charging them from any state to full, no memory really. However if you have a full charge and leave it plugged in you can burn them out in which case they do not retain that charge for very long. It will over periods of time shorten the life of the battery. It usually wont happen on the first go (depending on how long after full you leave it charging.)
Safest way to keep your battery happy is not to let it drain to complete empty and to take it off the charger when its done.

Interesting info guys.. so it looks like on the safe side that im not going to leave it plugged in for long hours..

sguerra923 said:
Interesting info guys.. so it looks like on the safe side that im not going to leave it plugged in for long hours..
Click to expand...
Click to collapse
most modern battery chemistry has a life of around 1000 recharge cycles. It doesn't matter if they are full charges or half charges so even though there isn't a classic memory affect, it does nibble away at the recharge cycles. To put it another way, a given battery loses 1/1000 of it's capacity every time it's charged to full charge. Not really memory but just steady degration. All charging circuits today either stops charging or does trickle charge once full. BTW, trickle is a term that applies mainly to pb and NiCad betteries.. today's batteries actually use a form pulse charging for maintenance. Now this protects the battery from overcharging but if you leave it plugged in, the charging circuit will basically go into this mode of letting the battery drain a bit and then charging it. This will eat away at a batteries life. A real world example... my wife and I had near identical laptops ant one point. She left hers plugged in most of the time whereas I drained my battery each time before recharging. When her battery started lasting only 10mins on a "full" charge, mine was still at about 1.5hrs. It took her battery only a year to fail where mine didn't go dead (i.e. below 1hr per charge) until over 18months.
My advice is don't leave it plugged in but once it's about 20-30% of full it's ok to recharge. Hell, if you think about, 1000 recharges will last almost 3 years of daily charging. So what if it only lasted 2. Any of us would likely be on to the next phone or be willing to buy a second battery.

When I exchanged my Fuze for a new one at AT&T, the service person said my battery was bad, due to overcharging.(Battery had a slight bulge). She said leaving my Fuze plugged into my car charger and my computer(with charging turned on) degraded the battery. Phone was about 7 months old.
There is an option to NOT charge the battery when connected by USB to the computer.(kind of indicates no automatic charging control)
Well, I use my Fuze as a computer 12-14 hours a day. I want to see the screen, which means I need it plugged in either to the computer or car charger.
If I turn off recharging when connected to my computer, I end up with a dead battery pretty quickly, since I use it a lot as my business phone with a Bluetooth speakerphone.
The AT&T person said this information was given to them by HTC.

bigger capacity battery or get another device(netbook) that can sustain the 'abuse'?

bigger capacity battery won't solve it
Without it being plugged in, the screen turns off. Even a large battery wouldn't last with the screen on all the time, if even you could figure out how to make it stay on.
I had to plug in the earphone dongle and plug the car charger in to that, to get the screen to stay on in my car. Plugging the car charger directly into the phone, the screen would turn off no matter what I tried.
I guess I need to replace the battery every 8-12 months.

Yikes, there's so much misinformation about batteries in this thread, it's frightening.

so point us to better info
All I know was that my battery was bulging a bit after 7 months of use, and it was holding a charge less and less.
And I reported what AT&T told me..

hrothnir said:
All I know was that my battery was bulging a bit after 7 months of use, and it was holding a charge less and less.
And I reported what AT&T told me..
Click to expand...
Click to collapse
I'm not saying your battery isn't broken, and I'm not saying your charger (part of the phone nowdays) didn't go haywire and break it. I AM saying, however, that leaving the phone plugged in didn't do it (unless, of course, your charging hardware was faulty, in which case you're screwed anyway).
Lithium-Ion batteries don't get overcharged, because they tend to explode. That's generally considered a no-no for batteries, especially in consumer devices, so the charging hardware is designed to stop charging when the battery is full. An occasional "topping charge" is applied (by some chargers) because of the self-discharge of the cells. I kinda doubt that our phones do that, though, because it's only something like 1h of topping charge once every 20 days.
Let me repeat this again for absolute clarity: lithium-ion chargers STOP CHARGING when the battery is full. Leave it plugged in as long as you want, and (assuming the charging hardware isn't broken) it'll be fine.

So you're saying what AT&T told me was bullsh**t
Not that I believe what AT&T says or the given reasons, which didn't make sense from a technical standpoint.
But then you wonder why there is an option in the Fuze to NOT CHARGE the phone when connected to a computer using USB.
And I did see the bulge, and AT&T did replace the battery under warranty.

But then you wonder why there is an option in the Fuze to NOT CHARGE the phone when connected to a computer using USB.
Click to expand...
Click to collapse
Perhaps that option is available so when your laptop is not plugged into AC power, you can connect your phone without worrying about draining the laptop battery.

laptop
Seriously doubt that option was designed for laptops.
The phone would take very little from a laptop battery.
And would probably be labeled for laptop use.
I think that the phone drops a few % in power, then recharges, and does that constantly while plugged into a computer, causing the battery to waste the 800-1000 recharge cycles that it has.
Be nice if you could set the phone to not recharge when connected to a computer unless the power dropped 25% --or make it configurable.
Manually turning the charging off/on is impracticable.
Maybe a program can/has been written to cycle the charging off/on properly.

Extremely slow charging

Has anyone had a problem with extremely slow charging? I would plug my phone in and wake up 6 hours later and the phone is still not charged. It's even worse now with the extended battery. 7 hours worth of charging and I'm only at 85%. I'm rooted and using the de-bloat rom without the kernel, but it was like this even before the root. Has anyone else encountered this strange issue. I have been using the stock HTC charger.

mine charges in a couple hours using the wall charger and wifi hotspot. In the car or via computer USB, it charges very slowly and if wifi hotspot is on, it loses charger over time.

I typically turn my phone off to charge; speeds things up 2-3 fold.
Sent from my ADR6400L using XDA App

loztboy said:
Has anyone had a problem with extremely slow charging? I would plug my phone in and wake up 6 hours later and the phone is still not charged. It's even worse now with the extended battery. 7 hours worth of charging and I'm only at 85%. I'm rooted and using the de-bloat rom without the kernel, but it was like this even before the root. Has anyone else encountered this strange issue. I have been using the stock HTC charger.
Click to expand...
Click to collapse
Mine doesn't even take an hour . Power it off and try it that way and see how long it takes.

damn mine charges super fast compared to my nexus s i had

If you have plug to the computer it might take longer but not 6 hours, on the wall it only takes like an hour or two to be fully charge.
If it's an issue just take it back and get another one.

Yeah I might have to return this phone. Do you think it matters whether I use the cable that came with the phone, or a regular usb cable to charge.
Sent from my ADR6400L using XDA Premium App

You need to look at the power ratings of the adapters you're using. This behemoth phone can receive 1000ma, while many car and home chargers (like Droid1) are only rated at 500ma. I'm still trying to figure out what the power draw is on the phone when just idling (battery monitor widget is hard to understand), but if the phone draws 250-500ma with regular usage, its going to lose charge plugged into USB (rated at 500ma per port) and running hotspot (drawing closer to 600ma). That's -100ma.
These numbers are guesstimates. I'm not sure if the cable itself can pose limitations, but would suspect that as long as there's no shorts in the wire, it would be able to handle any of the above currents.

fronc said:
You need to look at the power ratings of the adapters you're using. This behemoth phone can receive 1000ma, while many car and home chargers (like Droid1) are only rated at 500ma. I'm still trying to figure out what the power draw is on the phone when just idling (battery monitor widget is hard to understand), but if the phone draws 250-500ma with regular usage, its going to lose charge plugged into USB (rated at 500ma per port) and running hotspot (drawing closer to 600ma). That's -100ma.
These numbers are guesstimates. I'm not sure if the cable itself can pose limitations, but would suspect that as long as there's no shorts in the wire, it would be able to handle any of the above currents.
Click to expand...
Click to collapse
yeah i find it impossible to charge the thing on USB, and it takes forever plugged into the wall with the charger it came with.
Had an evo, and it would almost full charge (from the time it said to plug it in, so 15%) in about an hour and a half. The thunderbolt seems to take 3 hours ish for me. I know I can turn the phone off, but since it usually charges over night its not a big deal, I just think it is interesting that it is so different.

yeah I'm one of the folks who charges FAST. It has really surprised me...I actually thought everyone was charging super fast until this thread.

fronc said:
You need to look at the power ratings of the adapters you're using. This behemoth phone can receive 1000ma, while many car and home chargers (like Droid1) are only rated at 500ma. I'm still trying to figure out what the power draw is on the phone when just idling (battery monitor widget is hard to understand), but if the phone draws 250-500ma with regular usage, its going to lose charge plugged into USB (rated at 500ma per port) and running hotspot (drawing closer to 600ma). That's -100ma.
These numbers are guesstimates. I'm not sure if the cable itself can pose limitations, but would suspect that as long as there's no shorts in the wire, it would be able to handle any of the above currents.
Click to expand...
Click to collapse
+1 on looking at your adapter. Use the one that comes with the phone or make sure that it's rated at 1000mA/1A or more. I tried a MicroUSB adapter I had lying around that came with a bluetooth headset; turns out it only puts out 200mA, so the phone would take forever to charge on it.

ufmace said:
+1 on looking at your adapter. Use the one that comes with the phone or make sure that it's rated at 1000mA/1A or more. I tried a MicroUSB adapter I had lying around that came with a bluetooth headset; turns out it only puts out 200mA, so the phone would take forever to charge on it.
Click to expand...
Click to collapse
with an output of 200mA I would be amazed if you could get this phone to charge at all, without having a custome kernel and underclocking the processor. If anything I would see it maybe staying same battery percentage.

Overall I feel this phone does charge really slow. It is way slow charging on a computer. I was charging it and just doing some light texting and after 4 hours the battery only went up by like 25%.
I have a second wall charger rated at 1000mAH, and after 30min it went up like 10%. This was with the phone off btw. With it on, but not in use, it went up like 4% over 30min. I'm kind of surprised how long it takes to charge. I've had no problems charging it at night. Plug it in before bed, and its full when I wake up. How does the 1400mAH battery size compare to other phones?
I did a little math too, the battery is a 5.18 W/hr battery. So with a 1AH charge at 5V, you'd expect the phone to charge in 2 hrs if only about 50% of the electricity is getting retained by the battery.

I've noticed that mine takes about 1hr 45ish mins to charge from completly dead. My Droid used to be an hour at the most.

i just checked on the adapter it came with, it's 200 mA...did people get better chargers than me or something? Mine takes forever to charge also...been stuck at 99% for 30 mins
EDIT: nvm, i was looking at input, not output...still isnt moving from 99% to 100% though

jbh00jh said:
Mine doesn't even take an hour . Power it off and try it that way and see how long it takes.
Click to expand...
Click to collapse
WTF are u talking about 0-100% or like 70-100%?

lorijuan1024 said:
damn mine charges super fast compared to my nexus s i had
Click to expand...
Click to collapse
@lorijuan1024 im with you man the Nexus S took forever...... To charge

its impossible for me to charge it through the computer, it went up 5% over 3 hours, wasnt on hotspot, sending texts.

Mine charges fine on anything, I am using my old fascinate charger.

Charging speed seems to fluctuate for me... sometimes I get lucky and its fast. Other times, not so much.

[Q] Forever to charge...

Hopefully I don't get flamed for this as I have been doing searches but so far nothing...
I got my HTC OneXL and that night I flashed Viper onto it. I don't know if it's the ROM or the phone itself, but it takes a really long time to charge. I plugged it in 2 hrs ago at 50% and I'm only now at 60%.
Battery life is hard to know length as I've had the phone a week and have been customizing and setting it up etc.
Is the charging a known issue to the phone or is it the ROM? I'm coming from the Iphone 4S and that thing charged up really fast.
Any help is greatly appreciated!!

Charging it from the pc or from the wall? Using the cable and power adapter it came with?
10 percent in 2 hours is slow. Typically in 2 hours I'll get about 50 percent or more.
If you have a 30 day faulty return policy I would take advantage and make sure they replace the power adapter too. Typically they would of course but I thought I'd specify just in case they wouldn't want to for whatever reason.
If you don't have a return policy available, I would try another usb power adapter for a couple hours as that would be my first guess as the culprit for this though it could also be an issue within the phone.
Sent from my HTC One X using xda app-developers app

I had the phone given to me and it didn't come with the original cord. I'm using the cord from my Xoom so that could be it...
Sometimes I use the wall charger, sometimes my pc and sometimes the USB port in my car. Guess I'll have to try and track down the actual cord and see if that works. It'd be cool if those dots on the back had an actual charger that worked for them!

ChandraKoo said:
Sometimes I use the wall charger, sometimes my pc and sometimes the USB port in my car.
Click to expand...
Click to collapse
Charging from a PC is slow, and from a car is extremely slow. If the 10% in 2 hours is from car charging, it would not surprise me, and pretty normal.
MicroUSB chargers or cords from most phones will work just fine on the this device, but don't know about the Xoom. I suspect either the charge source (car, PC) or cord may be the issue here.
Also keep in mind, that after a ROM flash, the battery meter is not completely accurate. You have to do a charge cycle to full, then drain to 10-20% for the high/low "flags" to be properly set. This might be part of the issue. But I haven't seen it cause such a slow increase in readings while charging, so I don't think its your main problem.

[Q] Charge Time

I am a bit surprised at how long my shield tablet takes to charge, around 6-8 hours depending on how much battery is left (usually around 20% before I charge).
Is this normal? Or are my expectations a little too high in thinking it would take 2-3 hours to charge?
Many thanks for for answers!!

What charger are you using? Mine doesn't take that long and I'm using NVIIDIA's retail charger (2.1A).

I am using the wall charger that is supplied with the tablet!!
I have spoken with nvidia support about this issue, however they couldn't confirm the charge time for some reason, hence why I am asking here for peoples experience with charging times. Also I have tried googling the answer and haven't found anything!!
Slightly frustrating!!

43 views so far and no answer?
come on people, all I am asking is your charge times for your shield tablets!
pretty please with cream and a cherry on top?

I havn't any exact number for how long the charging take, but I think the charging time has increased with Lollipop. Most of the time it is fully charged over night (6-8 hours) but sometimes it has just charged a few percent.

I have seen some unfortunate charging times as well, but I haven't recorded them or taken note of exactly how long they take. I also have chargers up to 2.1A and thicker gold plated cables I've tried.
Are there any apps I can use to record battery percentage by the minute?

ACharLuk said:
What charger are you using? Mine doesn't take that long and I'm using NVIIDIA's retail charger (2.1A).
Click to expand...
Click to collapse
What are we talking about? Time to go to 100% battery or time to go to green led?
There is a 30-45 min time difference between 100% and green led.

When my shield reaches around 20% i'll charge it over night whilst I'm asleep, 6-7 hours later when i wake up i still see the orange led and am surprised at how slow it takes to get to 100%. This is how I noticed the slow recharge time.
Admittedly this is my first tablet, and as stated I'm just surprised and lead me to think maybe the charger that was provided is a dud and/or the tablet is a dud. And no one likes a dud!!
However I just wanted to hear other peoples experiences as maybe the charge time is this long and I've just got too high of an expectation that a device like this should have a charge time of 2-3 hours.
Many thanks for all the responses so far, most appreciated. Keep 'em coming!! :good:

If you want 2 - 3 hours of charging time starting from 15% or 20, you have to get another charger. The stock one is weak. I got a Samsung Note 3 one and after 2 hours and a half, or even less depending the percentage, it's fully charged.

CM17X said:
If you want 2 - 3 hours of charging time starting from 15% or 20, you have to get another charger. The stock one is weak. I got a Samsung Note 3 one and after 2 hours and a half, or even less depending the percentage, it's fully charged.
Click to expand...
Click to collapse
^^^This.
Also, I have a Quick Charge 2.0 charger that I found on Amazon that shows whether or not a device is capable of using the Quick Charge 2.0 standard. My nVidia Shield does, in fact, seem to support it, and charges pretty quickly on this charger. I can't say I've ever had the tablet get below 50% or so, but I've never seen it take more than an hour or two to get the Shield's charge indicator to go green with that charger.

jt3 said:
^^^This.
Also, I have a Quick Charge 2.0 charger that I found on Amazon that shows whether or not a device is capable of using the Quick Charge 2.0 standard. My nVidia Shield does, in fact, seem to support it, and charges pretty quickly on this charger. I can't say I've ever had the tablet get below 50% or so, but I've never seen it take more than an hour or two to get the Shield's charge indicator to go green with that charger.
Click to expand...
Click to collapse
What's the Output of yours?

CM17X said:
What's the Output of yours?
Click to expand...
Click to collapse
18W. However, in the normal 5V mode, it's only 10W, like any other 2A charger.
In QuickCharge 2.0, the device being charged decides if/when the charger uses the 5V, 9V, and/or 12V charging modes. If the device is not QC 2.0 compatible, the charger will ALWAYS charge at 5V. This particular charger indicates when the device has allowed it to shift into the 9V or 12V charging modes (but unfortunately doesn't indicate which). In either of those modes, it's 18W (which incidentally is about 4W more than the Moto "Turbo Charger").
I've seen a 30W charger on Amazon (which is the maximum, according to the standard), but it doesn't have the indicator. This is important to me, because QC 2.0 needs a full data cable to communicate with the device. Accidentally use a charge-only cable, and it will stay in 5V mode. It's nice to have that warning that you've done something wrong.
However, in this case... that indicator showed me that my Shield had a fantastic unadvertised feature (at least as far as I knew).

jt3 said:
18W. However, in the normal 5V mode, it's only 10W, like any other 2A charger.
In QuickCharge 2.0, the device being charged decides if/when the charger uses the 5V, 9V, and/or 12V charging modes. If the device is not QC 2.0 compatible, the charger will ALWAYS charge at 5V. This particular charger indicates when the device has allowed it to shift into the 9V or 12V charging modes (but unfortunately doesn't indicate which). In either of those modes, it's 18W (which incidentally is about 4W more than the Moto "Turbo Charger").
I've seen a 30W charger on Amazon (which is the maximum, according to the standard), but it doesn't have the indicator. This is important to me, because QC 2.0 needs a full data cable to communicate with the device. Accidentally use a charge-only cable, and it will stay in 5V mode. It's nice to have that warning that you've done something wrong.
However, in this case... that indicator showed me that my Shield had a fantastic unadvertised feature (at least as far as I knew).
Click to expand...
Click to collapse
So no more words, i'm getting that charger.
Ps: Negative charge while playing, do you face it? It happens on games like HL2 and Sky Gamblers - Storm Raiders.

kf006 said:
When my shield reaches around 20% i'll charge it over night whilst I'm asleep, 6-7 hours later when i wake up i still see the orange led and am surprised at how slow it takes to get to 100%. This is how I noticed the slow recharge time.
Admittedly this is my first tablet, and as stated I'm just surprised and lead me to think maybe the charger that was provided is a dud and/or the tablet is a dud. And no one likes a dud!!
However I just wanted to hear other peoples experiences as maybe the charge time is this long and I've just got too high of an expectation that a device like this should have a charge time of 2-3 hours.
Many thanks for all the responses so far, most appreciated. Keep 'em coming!! :good:
Click to expand...
Click to collapse
Seems you have a problem, mine doesn't take more than 4:30 to go from 15% to green light.

Actually, using the stock charger, it only takes mine about 3 hours to fully charge from being dead.

derekmt95 said:
Actually, using the stock charger, it only takes mine about 3 hours to fully charge from being dead.
Click to expand...
Click to collapse
I don't think so
Correct me if i'm wrong but the shield battery is 6900mAh.Stock charger is 2.1A... So what you are saying is impossible.

Doesn't charging a battery faster degrades it? Like, the faster you charge it the hotter it gets and the fastest it degrades overtime? And the same can be said of the opposite: the slower the better for the battery longevity?

Judge584 said:
I don't think so
Correct me if i'm wrong but the shield battery is 6900mAh.Stock charger is 2.1A... So what you are saying is impossible.
Click to expand...
Click to collapse
You're wrong, it's a 5197 mAh. Stock charger is 2.1A. Battery charge take 4 hours near to 5%, 3 hours near to 15%.
eurominican said:
Doesn't charging a battery faster degrades it? Like, the faster you charge it the hotter it gets and the fastest it degrades overtime? And the same can be said of the opposite: the slower the better for the battery longevity?
Click to expand...
Click to collapse
Yeah, high amperage kill your battery faster, take care about "quick recharge" charger. Try to avoid long charge too. Don't forget : 1 cycle on Lion-ion battery don't mean 1 charge = 1 cycle. 1 cycle = 0% to 100%. So you can charge 20 percents at job, 10 percents in train, 70 percents at home.
---------- Post added at 03:33 PM ---------- Previous post was at 03:30 PM ----------
kf006 said:
I am a bit surprised at how long my shield tablet takes to charge, around 6-8 hours depending on how much battery is left (usually around 20% before I charge).
Is this normal? Or are my expectations a little too high in thinking it would take 2-3 hours to charge?
Many thanks for for answers!!
Click to expand...
Click to collapse
See my post just up there. 6-8 hours is too long, maybe battery fail...

Thanks for all the replies guys, most appreciated!!
I have spoken to Nvidia Customer Care and I thought I would share what they advised me to try (which may or may not help others are experiencing the same issue), not sure if this will work or not, but at least it is something to try -
"We would kindly request you to follow the battery calibration producer mentioned in the steps below, observe the device performance and let us know the result.
You will have to calibrate the battery for just one time and observe the device battery backup for 2-3days to see the changes.
1: Drain your Shield tablet battery by using it normally until it turns off by itself.
2: Power-on your Shield tablet, if it wakes up and if you see some power left, follow step 1.
3: If Shield tablet is now drained to the point it can't wake up, set the device to charge for 7-8 hours.
The device should remain off when you set it for charging here.
4: Unplug the charger after 7-8hours, power on and wait for the battery charge to drop down to 90-95%.
5: Once the device battery drops down to 90-95%, plug in the charger and charge for one complete hour.
6: Unplug the charger once the device is fully charged.
7: Go to Shield settings > Shield power control > Apps> select optimize all option.
8: Go to Shield settings > Shield power control > system>
• Set the brightness to auto.
• Change the sleep option to 2 minutes of inactivity instead of default 10 minutes inactivity.
• Change the processor mode to either optimized or Battery savings.
• Check the Wifi optimization on.
Observe the device performance and report to us if you are still facing issue with the battery backup.
For better battery backup and optimization, you may also consider following steps.
1: Always use the Shield tablet charger and not the computer USB ports or any other charger as the power specifications vary from the device to device.
2: In case if the charger is missing, use the back port of the desktop computer to charge the device instead of front port.
3: Always remember to exit the application instead of tapping the home button which will continue to run the application in the background.
4: Restart your Shield tablet at least once in a week. This will refresh the device making it work faster and efficient.
5: Connect the charger only when the battery comes down to 15% and unplug the charger only when it reaches 90% or above. This will reduce the number of charge cycles which will make battery last longer.
6: Use a third party app manager like Clean Master and free the memory at-least once a day to keep the device running faster. "
Fingers crossed this helps.

Your charger is faulty I believe, same as mine which Amazon and Nvidia themselves said was faulty and I got a partial refund due to that. I would suggest you to get some other charger, that charges at like 2.1A as they charge the tablet ridicolously fast (about 2,5 hours from 20%) and I'm finally able to play games while charging too (however, then it charges at a slower rate).
I made a thread about this not so long ago:
http://forum.xda-developers.com/shi...k-charger-charges-slow-drops-battery-t2972368