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Hi all im about to pick up a n7 and join the club ..
But i'd like to know the first time charging pattern ? If i remember right i have to fully discharge to 0% and then overnight charge ?
Oh and while were at it how long one full charge takes ?
Thanks.
Sent From My Sexy Sensation.
With the new lipo batteries you should AVOID full discharges. Instead, charge the device to 100% before using, discharge to about 5%, turn off, then charge to full while off. That should condition and calibrate the battery effectively.
Also, a charge takes roughly three hours to full for me.
Sent from my Nexus 7 using xda premium
Manufacture doesn't recommend full discharge, they just recommend a full charge before it is completely discharged. What I did was discharged through use to about 30% (out of box it was 55%) then did a full charge.
As far as how long it takes charge, it really does depend on your power. Every house and every location get its power differently really. It also depends if you are using the stock provided charger as you're supposed to, if you're using usb from the computer, whether you are going through a power converter/ u p s or even if you are using a non standard power output to usb. On know my full charge was about 2.5 hrs from the 30 percent to 100 percent, using the stock charger to outlet through uninterruptible power supply which has a built in power converter/balancer because my electricity is crap ( unincorporated area, old house, old wiring ).
Really though you don't have to worry too much about lithium ion batteries. You really don't want to give it a complete discharge, based on the existing evidence. Apparently this causes a relatively significant shock to the actual chemicals the power the battery. However many people say you do not want to completely charge the battery either, but most battery service management programs, the actual firmware that keeps the batteries going, will stop a charge at 99 percent tell you it is 100 percent and no longer charge above that for this specific reason.
if you look around to the community, many people recommend that you fully discharge battery, after using a program like battery calibration https://play.google.com/store/apps/details?id=com.nema.batterycalibration and then charge fully to 100 percent anytime you change ROM so the same could be said with a brand new stock unit. Also let's be honest, your device is going to last 2 maybe 3 years. How much damage can you really do but discharging in a few times in the time? also the batteries aren't all that expensive so even if it does significant damage it is still repairable?
Sent from my Nexus 7 using xda app-developers app
Thanks guys and to be specific for the charging time part i will be using stock charger and not usb so just a quick recap charge to 100% discharge to 5% and recharge to full ?
And if it takes me 4 hours id be satisfied because my sensation that has 1900mah takes about that much time and the n7 is more then double of it ..
Can't wait to pickup this beast hope ill get a perfect unit
Sent From My Sexy Sensation.
shahkam said:
Thanks guys and to be specific for the charging time part i will be using stock charger and not usb so just a quick recap charge to 100% discharge to 5% and recharge to full ?
And if it takes me 4 hours id be satisfied because my sensation that has 1900mah takes about that much time and the n7 is more then double of it ..
Can't wait to pickup this beast hope ill get a perfect unit
Sent From My Sexy Sensation.
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Use it to 5 percent charge, then recharge to 100 percent
Sent from my rooted Nexus 7 via xda-developers app.
Just reiceved my N7 today. It only had about 5% charge. I've had it on the charger for 5 hours and its only at 75%. This doesn't seem normal.
Is it possible to ruin my phone's battery due to overcharging? I charge my phone overnight no matter what percentage it is on, I still charge it I know this is bad, but can this ruin the battery? thanks
You should be able to charge as long as you want w no problems as long as you're doing this in a cool or room-temp environment (rather than say leaving it alone in a car charging at high noon w AC off, windows down & no sun shades on the windshield). If you have your phone charging in hi-temp conditions too long\often your battery swells & you get gradual irreparable damage.
HeyyMyNameIs said:
Is it possible to ruin my phone's battery due to overcharging? I charge my phone overnight no matter what percentage it is on, I still charge it I know this is bad, but can this ruin the battery? thanks
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If u make a correct use of your battery it won't get damaged. Extreme overclock, overvolt, etc can ruin your battery, but if u charge it every day because ur battery is empty it's ok, and u won't have any problem.
luiseteyo said:
If u make a correct use of your battery it won't get damaged. Extreme overclock, overvolt, etc can ruin your battery, but if u charge it every day because ur battery is empty it's ok, and u won't have any problem.
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what if I charge it eventhough the battery isnt empty?
HeyyMyNameIs said:
what if I charge it eventhough the battery isnt empty?
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You should be fine. Just look out for power surges!
sspyed said:
You should be fine. Just look out for power surges!
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thanks man =) thanks to the both of you who replied
Normally, when your phone reaches 100 % full battery level, it stops charging and starts discharging. At around 95 % level, it starts charging again. This all takes a toll on the battery, especially over a long period.
If your phone's battery is at or above 50%, leave it alone or turn it off for the night.
I have an external battery pack for use during the day time, just for situations like this.
Sent from my Nexus 4 using xda premium
Been thinking of asking this for some time. Thanks OP for posting and big thanks to those who replied.
jamesc760 said:
Normally, when your phone reaches 100 % full battery level, it stops charging and starts discharging. At around 95 % level, it starts charging again. This all takes a toll on the battery, especially over a long period.
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I don't think that's correct. It should switch to a trickle charge, which won't harm the battery, not stop charging completely.
Sent from my Nexus 4
What I spend a lot of time charging the phone through USB? I leave it on charge at work plugged into the computer through USB as there are no free plug sockets. My battery just seems to be getting worse and worse over the last couple of months... Could this be the problem?
Sent from my Nexus 4 using xda app-developers app
HeyyMyNameIs said:
Is it possible to ruin my phone's battery due to overcharging? I charge my phone overnight no matter what percentage it is on, I still charge it I know this is bad, but can this ruin the battery? thanks
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It'll automatically stop charging itself when it's full, it's impossible to overcharge a modern cell phone battery these days. They are a bit more computerized than the old nicad batteries from back in the day. It's actually healthier to give lithium batteries partial charges at a time instead of draining to zero percent and charging to 100 percent.
phil35 said:
What I spend a lot of time charging the phone through USB? I leave it on charge at work plugged into the computer through USB as there are no free plug sockets. My battery just seems to be getting worse and worse over the last couple of months... Could this be the problem?
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I doubt it. Could be a faulty battery, but more likely to be apps draining it in the background. Install BetterBatteryStats and see what is using the battery.
Sent from my Nexus 4
i'm using app called full battery & theft alarm. i always charge my phone during sleep, and this app will wake me up to disconnect the charger if the battery is full.
i hope this will prolong the battery life
How do you know your battery is getting worse if it's always charging?
My personal experience is the less you charge it, the better it will perform. However, when you DO charge it, make sure you are less than 30% battery and charge it to 100% before removing it.
For me it's easy, I basically charge my phone at night when I go to bed and that's it. I easily get through an entire day on this phone, though I admit I usually only have about 2-1/2 hours screen on time (I mostly use my tablet when I am at home)
Hey folks I'm wondering about my phone, it's brand new but i read around that there some troubles with the red light of death, so i need to known what's the better strategy for my never turned on battery, could be better of i recharge it completely or could be better of i discharge it and then recharge to 100%?
Thanks
✉Sent from my GT-I9300 using CM10.1
No need to discharge it. It's even better never let it drain completely.
Sent from my Nexus 4 using xda premium
Yeah, the older batteries, you wouldn't want to keep fully charged very long and you'd always want to fully drain but with the new batteries, it doesn't really matter that much. What is recommended is, as Unjustable said, you don't want to fully drain it.
Also don't have a charging routine.
Ex. You never charge your phone til it gets to 15%
You have to change it up a bit.
If your phones at 50% charge it. If its at 10% charge it. If its at 70% charge it. You don't wanna charge it at the same percentage all the time.
Sent from my Nexus 4 using xda premium
bodom_hc said:
Also don't have a charging routine.
Ex. You never charge your phone til it gets to 15%
You have to change it up a bit.
If your phones at 50% charge it. If its at 10% charge it. If its at 70% charge it. You don't wanna charge it at the same percentage all the time.
Sent from my Nexus 4 using xda premium
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Why is that?
I always used to charge my phone when it reached below 10% and battery stats were perfect. Just recently I started charging WHENEVER I felt like.. be it at 30%.....50% or even 90%. And now since 3 days my phone automatically reaches to 100% charge from..lets say..85% etc. Even after restart it shows 100%.
Moreover, when I unplug and use it for a min, it drops a few percentage and suddenly gets back to 100% and then starts draining.
Dont know whats wrong.
bodom_hc said:
Also don't have a charging routine.
Ex. You never charge your phone til it gets to 15%
You have to change it up a bit.
If your phones at 50% charge it. If its at 10% charge it. If its at 70% charge it. You don't wanna charge it at the same percentage all the time.
Sent from my Nexus 4 using xda premium
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i've already heard this, this should be good for the battery's elasticity
I fully drain mine every day..(until dies).. Also Google recommendation is drain it after you get your phone....
I've never had an issue doing it this way.
Sent from my Nexus 4
myturbo1 said:
I fully drain mine every day..(until dies).. Also Google recommendation is drain it after you get your phone....
I've never had an issue doing it this way.
Sent from my Nexus 4
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That you don't have any issues is because of the battery is protected by circuitry that prevents over-charge and deep-discharge.
As i stated before it's better to not fully discharge.
Also Google didn't recommend fully drain it when u get it..
myturbo1 said:
I fully drain mine every day..(until dies).. Also Google recommendation is drain it after you get your phone....
I've never had an issue doing it this way.
Sent from my Nexus 4
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Where you seen it? Are you sure?
✉Sent from my GT-I9300 using CM10.1
I dont think fully draining the battery is good for its life span. I usually let it discharge until 7% and haven't had any problems.
Sent from my Nexus 4
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
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this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
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It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
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NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
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Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
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millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.
junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
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No, I do not have a QI charger. I was always using a USB wall charger.
So excited about getting my new phone today but have a question prior to opening just to be prepared. What is the best process to ensure the battery health when first opening device? Do I charge the device fully prior to turning it on for the first time or do I let the battery drain fully before I put it on the charger? I know this is an age old discussion but not sure with these new phones how to best handle it.
Thanks in advance.
I honestly used it took it died, then I charged it all the way to 100 (never leave overnight) then I let it die all the way, then charge again.. So far good battery life
That was after my first full charge[emoji4]
Sent from my Nexus 6P using Tapatalk
RidinNerdy said:
I honestly used it took it died, then I charged it all the way to 100 (never leave overnight) then I let it die all the way, then charge again.. So far good battery life
That was after my first full charge[emoji4]
Sent from my Nexus 6P using Tapatalk
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Thanks. Ill do that. I love the battery stats you getting and that's what I want!!
RidinNerdy said:
I honestly used it took it died, then I charged it all the way to 100 (never leave overnight) then I let it die all the way, then charge again.. So far good battery life
That was after my first full charge[emoji4]
Sent from my Nexus 6P using Tapatalk
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That is the worst thing you can do. These aren't NiCads. LiIon batteries do not like to be fully discharged.
You'll likely find that the battery will be charged to roughly 40%. This is considered the ideal amount of charge for long-term storage. People often still worry about memory effects of batteries, harping back to the days of older battery types such as Ni-Cad and some Ni-Mh batteries but the same isn't true for Li-ion or Li-Pol batteries.
The one thing to absolutely try to avoid is letting the battery run down to flat. Li-ion batteries will degrade quicker over time if discharged fully, which is also why devices have a built-in "buffer" amount when you run the battery down to avoid damaging them.
Honestly, the main issue for your battery is heat, and large drops or knocks. Try and keep it cool and never let it die on you!
You don't need to do anything special, just use it. One thing you should definitely not do is completely discharge the battery though. You should also refrain from keeping the device connected to a charger once it's reached full charge, keeping the battery at peak voltage decreases the long-term battery life. Here's a couple of really helpful articles:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Just a point of info: Phone batteries don't LET you completely discharge. Once your phone shuts down (afer running "out" of battery, the battery still has some level of charge left.
l_stevens said:
Just a point of info: Phone batteries don't LET you completely discharge. Once your phone shuts down (afer running "out" of battery, the battery still has some level of charge left.
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That is right, but if you continue to power the device on in order to drain it more you'll cause problems. It's virtually impossible to completely drain one of these batteries, it actually powers down at something like 50% of its true capacity, because if it gets much lower than this it can cause irreparable damage. If you do somehow manage to drain one of these batteries past that magical point (by the methods I described above), it will simply not power on again because there's a minimum amount of voltage required.
Interesting. I normally charge my devices while I sleep so when I wake up they are fully charged. Once I'm up I'm ready to go and have a full charge not wake up to charge the device and wait for it to reach capacity idk. I haven't had any issues in any phone I've had while charging it while I sleep at night
Sent from my Nexus 6P using Tapatalk
Cleva1 said:
Interesting. I normally charge my devices while I sleep so when I wake up they are fully charged. Once I'm up I'm ready to go and have a full charge not wake up to charge the device and wait for it to reach capacity idk. I haven't had any issues in any phone I've had while charging it while I sleep at night
Sent from my Nexus 6P using Tapatalk
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It just basically reduces the capacity of the battery over time. I charge in the evening before bed, it only drops a couple of percent overnight thanks to doze.
Heisenberg said:
It just basically reduces the capacity of the battery over time. I charge in the evening before bed, it only drops a couple of percent overnight thanks to doze.
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With my Nexus like now I'm in bed with 77% battery, I'm usually on my device until I fall asleep, my BlackBerry has great standby time. With doze, I don't lose much battery if any and since the phone recharges so fast. I'm rarely "dead" enough to warrant me charging it while I sleep like say my note four etc. But this is food for thought in regards to charging
Sent from my Nexus 6P using Tapatalk