hi!
don't know if this is the right forum, but i think i'll give it a try
how can i calibrate the battery of my hd2? or is this not neccessary?
should i always discharge 'till the battery is nearly empty, or is this not a good idea and i should recharge at a certain battery-level the latest?
thanks very much for your help!
im getting v good battery usage and i do thid by full charge full drain 3 or 4 times and i tend to charge when gets to 10% hope this helps g
hebbe said:
hi!
don't know if this is the right forum, but i think i'll give it a try
(...)
Click to expand...
Click to collapse
i think the hd2 general forum would have been more appropriate for this but i guess it won't hurt anyone if you posted here
there are many contrasting views about this and you will probably get confusing answers. i am not an expert but i'll try to brief you with some info i've got from my readings about lithium-ion batteries and my personal experience, of course.
so here we go:
hebbe said:
how can i calibrate the battery of my hd2?
Click to expand...
Click to collapse
1. discharge fully until the phone shuts down by itself
2. remove battery and wait ~1 minute
3. charge completely with the phone OFF until the green light is lit
4. remove battery and wait ~2 minutes
hebbe said:
is this neccessary?
Click to expand...
Click to collapse
some recommend to do it every 3 to 6 month
here you'll find many that recommend you to do it after flashing a new radio rom.
from my own experience i tend to agree with this
hebbe said:
should i always discharge 'till the battery is nearly empty, or is this not a good idea and i should recharge at a certain battery-level the latest?
Click to expand...
Click to collapse
i've read somewhere that lithium-ion batteries like being charged as often as possible and don't like being left without juice. this is the main reason some people don't want to even hear about the calibration procedure. but i think there is a big difference between complete discharging now-and-then and complete discharging as a habit.
i've never heard anybody recommend a precise low level limit when you should start to recharge.
there is no danger to overcharge though.
hebbe said:
thanks very much for your help!
Click to expand...
Click to collapse
no problem mate,
cheers
I heavily use my infinity with dock. I know that Li-Ion Batteries have degraded battery life every time you let them dissipate to 0%. Unfortunately that almost always happens when I use the dock (Tf201). Is there any way to stop the tablet from charging from the dock around like 5%? I want to keep my dock connected because I want to keep using the keyboard but I don' want to shorten the dock's battery life unnecessarily when my tablet is at 90%.
Is there an app or rom solution to this?
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
same problem here. my dock drains fast too i feel like its giving it too much power !
Same. Mine charges the tablet super fast, but the dock still works at 0%. I've only gotten it there one though.
Same here, I feel the dock is charging the tablet just a tad too much. When the dock's warning me about 0% battery left, the tablet itself is still at 80-90%. That can be useful if I wanted the dock to ONLY charge the tablet, but when I want to use the dock as well, it's far from ideal.
I'd like it if we had a setting for this, like one for pretty much just using the dock as a spare battery/charger, and one for maximum tablet AND dock battery life. I get that the dock's not much use without the tablet, but it feels unbalanced as it is now.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Einride said:
Same here
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Click to collapse
Same here. I work and every time the dock is 0%. Im at college. Sorry for worse english.
Okay I must be missing something here.. but the dock still works just fine at 0%, why should it keep any power to itself?
Druidika said:
Okay I must be missing something here.. but the dock still works just fine at 0%, why should it keep any power to itself?
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Click to collapse
Because for Lithium-ion battery it is not good to have it discharged to 0%, this can reduce the battery life span.
Also another problem can be is when battery is a discharged state, its voltage will gradually decrease then the keyboard dock will no longer be charged any further because the protection circuit disables it (Although this usually applies when you are storing the battery at discharged state but its a good idea to keep this in mind).
Cheers
Actually, the dock battery is not fully depleted when it reaches the nominal zero % charge -- the internal electronics of modern batteries prevent them from depleting to harmful levels. (This has been referenced in the TF700 forums elsewhere, by the way, which a search probably would've shown.)
I think that the charge provided to the main tablet is coming from both the dock battery and the main tablet's battery at the same time; however, since the dock battery has a significantly lower capacity, it should not come as a surprise that it gets 'depleted' sooner.
From a usability or design point of view, I fully agree with you that it would have been nicer to see the dock deplete to about 40% 'resting charge' (which is reputed to be the optimal moment to connect the charger again ) an have the tablet's main kick in. The dock battery could then take over when the main battery reaches 40% charge left. That way we'd have best of both worlds: battery capacity is used optimally, and battery life would be optimal as well.
Alas, this is the real world. From a practical point of view: do not worry you are screwing up your battery, as you're not. Well, of course you are, but all batteries degrade when in use; that's a given -- but when our batteries finally die on us permanently and irreversibly, we'll have at least one other great 64-core 256 GB superduperHD 30" hypertablet available that makes you fresh coffee in the morning, irons your clothes and tells off door salesmen on its own. It will be so heavy it will need legs of its own, but then it also runs all Olympic sprinting distances at least an unbelievable 2.4 seconds faster than the then-current world records.
---------- Post added at 10:35 PM ---------- Previous post was at 10:24 PM ----------
Malkaridae said:
Because for Lithium-ion battery it is not good to have it discharged to 0%, this can reduce the battery life span.
Also another problem can be is when battery is a discharged state, its voltage will gradually decrease then the keyboard dock will no longer be charged any further because the protection circuit disables it (Although this usually applies when you are storing the battery at discharged state but its a good idea to keep this in mind).
Cheers
Click to expand...
Click to collapse
This ^^ is right, though -- if you wait long enough, even the protection circuitry will fail, and the natural voltage fall-off will kill your battery. If you put away a healthy Li-Ion battery in a fully charged state, this should take about four months at the least, but probably closer to eight months to a year.
I hope someone reads this and decides to create an app that exactly handles this problem. I feel bad when I always discharge to 0%. If this is not so harmful as I feel, I still I dont like it.
I think this is a mental thing for you all. No need for dock to keep a charge. Its designed to push the tablets life longer so you can detach it and keep going if you'd like and not leave any juice behind.
Sent from my Galaxy Nexus using xda app-developers app
It's not quite as simple as that is it? If it was just an extended battery pack why have a keyboard, USB port and SD card reader included?
Okay, you only see it as an extended battery, not all of us does. Part of the reason why I chose the TF700 is because of the dock. Any portable device can get a portable battery pack to extend battery runtime, this one is a keyboard and port extender as well.
I don't see why we shouldn't be able to further control how the dock depletes its battery, it'd make it a lot more useful overall.
Einride said:
It's not quite as simple as that is it? If it was just an extended battery pack why have a keyboard, USB port and SD card reader included?
Okay, you only see it as an extended battery, not all of us does. Part of the reason why I chose the TF700 is because of the dock. Any portable device can get a portable battery pack to extend battery runtime, this one is a keyboard and port extender as well.
I don't see why we shouldn't be able to further control how the dock depletes its battery, it'd make it a lot more useful overall.
Click to expand...
Click to collapse
Because you can use all of those when the dock is at 0%. So why do you need to save the docks battery?
Sent from my Galaxy Nexus using xda app-developers app
NickS VR4 said:
I think this is a mental thing for you all. No need for dock to keep a charge. Its designed to push the tablets life longer so you can detach it and keep going if you'd like and not leave any juice behind.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I cant detach in college because I like to work with the dock. That is the reason I bought it.
usern ameisval idandnot said:
I cant detach in college because I like to work with the dock. That is the reason I bought it.
Click to expand...
Click to collapse
Then leave it attached, makes no difference. Add the numbers up to 200%.
If you have 80% battery, what difference does it make if its 0% and 80% or 40% and 40%? (I know battery sizes are different and percentages would be different).
Now overall battery is down to 80%, if you detach tablet with scenario 1, you have max battery left (80%) vs 1/2 of that (40%) if the dock had a charge remaining.
Why should the dock keep any charge? It still works with 0%.
Sent from my Galaxy Nexus using xda app-developers app
because some of us do not want to let it waste charge when the tablet is already near full. (save some charge for later). we dont want to recharge it just because it gave too much power to the tablet at an uncessary time. i bet alot of people dont want it to charge the tablet to 100% from 99 everytime u turn the screen on lol , it would just make life better with the tablet + dock if we could control when it does charge during sleep ,ect
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
jtrosky said:
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I do not get the issue either. On I go to a relevant thread.
jtrosky said:
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I was under the impression that the dock will eventually "power off" and you won't be able to make use of the keyboard, USB port and SD card reader once its battery is depleted. However, if they're still fully functional as long as the tablet is connected, I don't really mind the current way it's done.
Surely the dock requires some power to operate though, and unless it gets that power from its own battery, the tablet will have to power it. It's this "obfuscation" of actual battery capacity and use I find slightly annoying.
After reading this thread and after some thinking i can dig both camps :laugh:
On one hand, we are concerned about a battery lifespan, and as it is well known that batteries should not deplete to 0%, i can dig those who want to control that. But, there is also a mention that the battery doesn't really go down to 0% and it somehow controls that automatically.
So, no worries on this side.
The other "problem" - which i think is more important, at least to me - is that some of us feel that it is completely unnecessary for the dock to charge the tablet if the later has 99% of battery. I would also like to have some kind of control over this.
Both 100% - i want to use only tablet battery. And i will use it until it drops to about 30-40%. Than i would like the dock to kick in and refill my tablet. Probably right in the middle of my other work when i actually don't use a tablet (faster refill as i am not using it). Well, after it reaches 90%+, please docky dock, get out of the way and wait for your next turn. Maybe i'll refill you, too
So yeah, there is actually NO problem at all, only different use cases. I bet every single one of use has a little bit different usage pattern and with an app to customize these things, we could and should all be happy.
Anyone, anyone? I would like to beta test it
jtrosky said:
I'm trying to understand what the problem is here... What good does it do for the dock to keep a charge? You can't use the dock without the tablet and as long as the tablet is connected, the dock will work, even if it reports a 0% charge. So what good would it do to keep, let's say, the dock at a minimum of 10%? That 10% would be completely "wasted", right?
Or am I misunderstanding the issue?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
The issue is that Li-ion batteries lose max harge every time they are depleted. You do not want to constantly cycle your battery because of this. The dirty solution is to stop using your dock before this happens but i use my infinity for work and this is not an option.
Sadly after only about a month of use my dock maxes out at only 98% now after being forced to completely dicharge it while working. At this rate, I will lose almost a quarter of the dock's charge in a year. Thats completely unacceptable. For such an expensive device.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Hey all,
recently I have encountered a rather big and annoying problem on my phone. It has to do with my battery. I've looked it up on xda, but nothing was really exactly like my problem.
The problem is that my battery level has gone absolutely crazy.
First, charging my phone takes many many hours. After around 5 hours it still wasn't fully charged.
Then when rebooting the phone, it magically said 100%. However, after this the phone drained extremely fast. Think around 20 percent per hour, while using it normally!
Secondly, around 40 percent the phone automatically turned off, without the usual HTC logo. When I turn it on again the battery level is suddenly 2 %. After a few times turning off and on the battery level goes up to 30 percent. This can be seen very well on the pictures.
The phone is 1,5 years old and I haven't installed a custom ROM.
Am I dealing with a broken battery or is the problem in the software?
Hi,
I'm not an expert, but I think your battery is exhausted.
But before you run buying another battery...
What charger are you using? Stock HTC or custom? If custom, what are the Voltage/Current output values?
probably your battery is dying as the above user said
or the battery it doesn't connect properly
check it
Kalashnikov94 said:
Then when rebooting the phone, it magically said 100%.
Click to expand...
Click to collapse
about this it is a htc's common issue
try this https://dl.dropbox.com/u/47039397/MODs/Battery Auto-calibration Script.zip
TheWall-[ITA] said:
Hi,
I'm not an expert, but I think your battery is exhausted.
But before you run buying another battery...
What charger are you using? Stock HTC or custom? If custom, what are the Voltage/Current output values?
Click to expand...
Click to collapse
It's HTC stock.
rzr86 said:
probably your battery is dying as the above user said
or the battery it doesn't connect properly
check it
Click to expand...
Click to collapse
Okay, thanks a lot! I was planning anyway to buy an Anker battery.
Kalashnikov94 said:
Okay, thanks a lot! I was planning anyway to buy an Anker battery.
Click to expand...
Click to collapse
Nice
Sorry for off topic: do you think it's better Anker or Mugen battery?
I had a similar problem. and my phone turns itself off.
i send phone to repair and he change display, battery and headphone
TheWall-[ITA] said:
Nice
Sorry for off topic: do you think it's better Anker or Mugen battery?
Click to expand...
Click to collapse
While reading on some forums about a better battery for the Sensation I haven't encountered Mugen, only Anker, which has some good reviews.
it's an older phone at this point. maybe it's losing power faster than it can figure it out? hopefully one of you out there knows a fix for this. thx
juntjoo said:
it's an older phone at this point. maybe it's losing power faster than it can figure it out? hopefully one of you out there knows a fix for this. thx
Click to expand...
Click to collapse
The G5 isn't THAT old, geez.
Anyway, my V20 was doing this, and it was just a ****ed up battery, misreporting it's percentages.
You can also try to do the battery stats cleaners if you are rooted, but I don't know if those even work anymore.
What I would recommend, is let the battery die, then charge it with a 900mah charger.(Something from an older phone) and let it sit without touching it.
Sometimes letting it charge with the slower chargers helps get it back to life
Silentwidow said:
The G5 isn't THAT old, geez.
Anyway, my V20 was doing this, and it was just a ****ed up battery, misreporting it's percentages.
You can also try to do the battery stats cleaners if you are rooted, but I don't know if those even work anymore.
What I would recommend, is let the battery die, then charge it with a 900mah charger.(Something from an older phone) and let it sit without touching it.
Sometimes letting it charge with the slower chargers helps get it back to life
Click to expand...
Click to collapse
thanks. I may try that. though i charge my batterIES in an external charger that I guess is standard speed. definitely not as fast as charging by phone itself
juntjoo said:
it's an older phone at this point. maybe it's losing power faster than it can figure it out? hopefully one of you out there knows a fix for this. thx
Click to expand...
Click to collapse
The rechargable battery is kaput. The fix is to replace the battery.
KelleyCook said:
The rechargable battery is kaput. The fix is to replace the battery.
Click to expand...
Click to collapse
thanks. makes sense. I'll keep an eye on all three, see the differences.
The battery being kaput isn't exactly true I don't think. I have 3 different batteries and without fail at 15% it will tell me the battery is dead and it will then proceed to shut down. No bettery saver, just a black screen. Phone has been doing this since I got it. Stock rom or custom doesn't matter. Not sure if this is the right place to post, I have a H850.
juntjoo said:
it's an older phone at this point. maybe it's losing power faster than it can figure it out? hopefully one of you out there knows a fix for this. thx
Click to expand...
Click to collapse
I have this problem and at 20_30 % gone.
I think that is something on kernel.
Can it solved???????????
Replace battery. Only sure way of isolating The issue
Phone shutting off at about 15-30% power without warning
This is the third phone I've had it was just replaced about 3 months ago I should say third replacement... Gets really hot messes up here in there... Recently I updated with the new 8.0 software... Now my battery cuts out at about 24% like clockwork so I replaced it with a new factory battery bought a T-Mobile for too much money... And it does the exact same thing... The bloody unit used to be able to do maps I could text and do other stuff at the same time and it would last you know for a while now if I do maps and a couple of emails or mean or text it's dead within an hour dot-dot-dot all since I've gotten that new 8.0 software
juntjoo said:
it's an older phone at this point. maybe it's losing power faster than it can figure it out? hopefully one of you out there knows a fix for this. thx
Click to expand...
Click to collapse
Definitely get a new battery, I had 2 batteries for my phone and both were doing that, ordered a new one off Amazon and it drained all the way to 1%
bodom_hc said:
Definitely get a new battery, I had 2 batteries for my phone and both were doing that, ordered a new one off Amazon and it drained all the way to 1%
Click to expand...
Click to collapse
I'll second this. My main battery did start to swell a little besides the sudden shutdown at 15%. I also know that this swelling can eventually cause the fingerprint sensor to malfunction. Beware. Anyhow, I decided to use the "almost dead" battery to game for long hours while charging (PUBG). My healthy new battery was used for normal usage besides gaming. Hope this helps!