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Hello everyone
I was wondering if its ok to leave the transformer connected to the charger.
Is it like the Evo with trickle down when it reaches 100%
I dont want to over charge it. If it were my laptop i would disconnect the battery at full charge. But its not possible to do that with the transformer.
I want to keep my cycle count low and prevent over charing.
I also wonder what happens in a few years when the battery is shot...
Charging is what damages Li-Ion batteries... I'd recommend not keeping it on the charger all the time. Android will purposely not keep the battery at 100% to help avoid some damage.
Li-ion prefer to be around 20-80% charge.
When battery is 100% and you keep the charger connected, heat will begin to build up and eventually you will kill your battery.
I'd do as with a notebook: charge till 100%, then remove battery or charger (in case of the tablet charger ) . Then use your tablet and recharge when needed / desired. And from time to time a full charge / discharge cycle won't do any harm.
Just my 2 cents.
Regards.
These tablets don't automatically recognize when it's fully charged and turn off the charging?
Ravynmagi said:
These tablets don't automatically recognize when it's fully charged and turn off the charging?
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They do. There are other threads asking why thier TF's don't show 100% when unplgged from the charger. Same as it does on my Evo.
I think pretty much every modern device recognizes a full charge and responds accordingly. In fact, MacBooks will throttle performance if the battery ISN'T kept in while the system is running on A/C.
Heat will damage a battery, but it's not heat from charging but heat from operation. If a notebook is poorly designed and the battery is near a heat source, then removing the battery might be a good idea (except with the aforementioned MacBooks), but that's independent of the charging issue.
I think it's fine to keep it plugged in. These devices are smart enough to manage such things. Of course, the TF's charging cable's so short it's hard to use when plugged in, but that's a different issue entirely.
CalvinH said:
When battery is 100% and you keep the charger connected, heat will begin to build up and eventually you will kill your battery.
I'd do as with a notebook: charge till 100%, then remove battery or charger (in case of the tablet charger ) . Then use your tablet and recharge when needed / desired. And from time to time a full charge / discharge cycle won't do any harm.
Just my 2 cents.
Regards.
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From what I understand this process cannot and will not kill the battery. This did happen in the old type of batteries with the ,emory effect but these new batteries and the OS's management system for charging does not allow the battery to be killed.
it will heat up and that would happen as there is a flow of electricity but not to a level that would kill the battery.
Cheers
IS it normal to go from 4% battery to 99% in under 3 hours ?
I thought this was supposed to take 8 hours to charge.
Cheers,
gpearson1968
gpearson1968 said:
IS it normal to go from 4% battery to 99% in under 3 hours ?
I thought this was supposed to take 8 hours to charge.
Cheers,
gpearson1968
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Yes that's normal. It's meant to take about 3hrs.
Thanks guys...
Still dont know about it. Because I think its like my EVO and technology got so good that my battery is protected.
I really dont want my transformer to become a expensive paper weight or non-mobile because after a few years it has 45 mins battery life.
I've got the first full charge and full depletion done. Is it ok to use while charging now as long as I fully charge and fully deplete it a couple more times?
error12 said:
Thanks guys...
Still dont know about it. Because I think its like my EVO and technology got so good that my battery is protected.
I really dont want my transformer to become a expensive paper weight or non-mobile because after a few years it has 45 mins battery life.
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batteries will degrade over time....would you be keeping this tablet for over 2-3 years? a simple battery change could work if ever needed
I am no expert, but I have spent some time searching around the internet looking for information on the best methods for improving the life of a battery. Most of the information I have found said it is bad to completely discharge a Li-polymer battery. The articarles stated it was best to charge the battery when it reaches 20% to avoid shortening its life.
Sent from my DROIDX using XDA App
Batteries are like muscles - they like to be exercised.
Leaving the unit plugged in WILL NOT HURT YOUR BATTERY. Period. The charging circuitry in modern devices is smart enough to cut current to the battery once it has reached a certain level of resistance.
Batteries do not like being deeply discharged. Most devices will shut off before the battery gets too deeply discharged, but it's never a good idea to tempt fate by running it until the device shuts off.
What really determines a battery's life is the number of cycles it has been put through. A cycle would be a full charge followed by a full (or to a lower end threshold) discharge.
The old original Lithium Ion batteries used in laptops would usually last about 300 full cycles or so - about a year if you used it on the battery every day. Partial discharges of course only count as fractions of a cycle.
Given the life of these types of devices, considering we'll likely upgrade to the next big thing in a year or so, I don't think anyone here will come close to 'wearing out' a battery.
EMINENT1 said:
I've got the first full charge and full depletion done. Is it ok to use while charging now as long as I fully charge and fully deplete it a couple more times?
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As stated, these are Li-Ion batteries, and they do not need to be trained. The only reason you might need to do any training is to calibrate Android's understanding of the battery (although I doubt you need to do a full discharge for that, either).
It's not going to suddenly kill it, but it will over time hurt your battery's life.
I went ahead and did a full discharge/charge cycle, but only because Asus said to do so in the manual. Maybe the copywriter just copied/pasted from a circa 1990's manual for a device with a NiCd battery, but I figured if they're suggesting it, I might as well do it.
I just got my Asus Transformer, I charged it full out of the box for 8 hours as initial charge. Should i drain it to 0 % and charge it for second time? or Just wait until 10 %?
Doesn't matter. I usually charge it when it gets to 10%.
For the first times I waited till 10% or something to fully recharge.
But after a lot of reading about the matter, I have found lots of opinions, so I think it doesn't make a big difference.
Regards.
Alright. Thanks man. Will just charge when 10%
From asus manual:
"Remember to fully charge the battery (8 hours or more) before first use and whenever it is depleted to prolong battery life. The battery reaches its maximum capacity after a few full charging and discharging cycles."
After awhile, Lithium-Ion Batteries don't really care how you charge them, or what their capacity is. Charging a battery at say 50% vs 10% won't really add that much more juice. I wouldn't really concern yourself OP..
Guys, the first 8hour charging means that I must charge separatly 8hours tablet and next 8hours dock? Because I put dock and tablet together and charge it 8hours. Was it wrong? Then I was using it connected tablet+dock together until it was showned warning that battery dropped under 5% and orange LED on the side of dock was blicking. Then I charged it again together and after 5hour of charging, LED is green and tablet shows 100%. Is it OK? Did I do something wrong?
Thanks
One question to you guys: During the first 8 hour charge, were you able to turn on the tablet? Because mine is sitting since 2 hours now and it won't turn on.
I have managed to turn it on.It required to keep the On button for about 10 seconds.
drifterD1 said:
Guys, the first 8hour charging means that I must charge separatly 8hours tablet and next 8hours dock? Because I put dock and tablet together and charge it 8hours. Was it wrong? Then I was using it connected tablet+dock together until it was showned warning that battery dropped under 5% and orange LED on the side of dock was blicking. Then I charged it again together and after 5hour of charging, LED is green and tablet shows 100%. Is it OK? Did I do something wrong?
Thanks
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You're fine. The goal is to get the batteries fully charged rather than, say, up to 50% and then stop.
Last I read, LiPo batteries do not need deep cycling to maximize battery life or restore lost capacity due to battery "memory." Some recommend an initial full charge followed by full depletion, but go on to note that is largely to calibrate battery usage stats. I keep most of my LiPo devices plugged in when I'm not using them, because those batteries require "smart" chargers that stop charging when the batteries are full.
If someone has good info to the contrary, I'd love to hear it. But, with well-made devices and chargers, there is no need to follow any sort of careful battery charging regimen. Use it when you need it, and charge it when it needs a charge.
AcerMate said:
One question to you guys: During the first 8 hour charge, were you able to turn on the tablet? Because mine is sitting since 2 hours now and it won't turn on.
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Mine was partially charged and turned on out of the box. Perhaps you have a power button with a loose connection? As long as it's working now, I would not worry about it.
finally today I recive my TR from US,& question is
are all of you guys ,charged 8 hours your TF
coz my is after 3 hours of charging TF is full 100%
& stay like that almost 2 hours more...
should I wait more 2 hours(for calibration reason)
or I can use it now
In the manual, it says charge for 8 hours before first use. I doubt that using before 8 hours is up will damage anything, but why risk it? I'd leave it on the charger.
10ks m8
Thanks for reply. My TF last 15hours of work after second charging. I think everything is OK with battery.
Underwater Mike said:
In the manual, it says charge for 8 hours before first use. I doubt that using before 8 hours is up will damage anything, but why risk it? I'd leave it on the charger.
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8hrs??? Are you sure that the asus manual? Sound like its the Samsung 10.1 manual... That how.long it takes to fully charge the 10.1
dazz87 said:
8hrs??? Are you sure that the asus manual? Sound like its the Samsung 10.1 manual... That how.long it takes to fully charge the 10.1
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Right in the little pamphlet (that counts as a manual ) under the TF in the box. I'm sure, because it's one of the few times I've read a manual in the last decade.
I´m charging my new TF for the first time and it´s reached 100% after 3 hours. Is it ok to start using it now or must i wait 5 more hours for the 8 that´s stated in the asus-booklet?
You could use it while its charging. First charge is really important. Dont stop the charge
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bitmovel said:
You could use it while its charging. First charge is really important. Dont stop the charge
Sent from my U20i using XDA Premium App
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^^ Be patient and let it charge.
Hi,
I recently bought an HTC branded spare battery, I've read the initial charge just needs make the charging indicator turn green as the current is switched off by the phone then. Part way through the first charge I accidently turned it on, I shut it down stright away, will this cause a problem with the battery capacity? I've read it should be a constant charge or are battries these days much more robust?
Thanks
Neil
I would not be worried. The charging algorythms are robust.
On a related note, I have read that it is beneficial to sometimes leave the battery on charge for some hours after the LED has gone green, and then not to charge again until the battery is completely exhausted (phone stops).
I believe that this may help the battery charge algorythms to learn the true maximum capacity of your particular battery and help it run as long as possible between charges.
- Steve
Hi.
I charge my phone overnight. 8 hours. Will that degrade the battery? Or does the phone prevent over charging?
Thanks in advance.
I wouldn't worry about it
No, if you leave it on 16 hours you'll get 200% battery level. Brilliant
RogerNZ said:
Hi.
I charge my phone overnight. 8 hours. Will that degrade the battery? Or does the phone prevent over charging?
Thanks in advance.
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The phone prevents overcharging, however it is still not good for the battery to
a) always charge it to 100%
b) keep it at 100% for 8hours
The general advice is to keep the battery between 20 - 80%. Granted, most people need a full charge to start the day and some people don't hold on to their phones for long.
Fast charging degenerates the battery faster, a fact oems omit to point out in their quest for faster charging speeds.
If you're not in a rush, you should just use a normal charger.
No damage done
And any long term effects will not be noticeable
By the time you notice any battery degeneration from keeping it at 100% you'd probably be on another phone.
hi are you rooted? if so I suggest you use an app called Battery Charge Limit. You can set when your device stops charging (preferably at 80%) and when it starts charging back up again. Again, you need root.
Since launch, most of the time I do 20-80%. So far so good
Do you use the 85% charge limit?
i personally think that 85% is BS i have had god knows how many phone all charged to 100% every single night and ZERO! issue. and limiting this phone specially to 85 is a big cut in the hours you will get.
Not a chance. I'd hate this phone if it only charged to 85%.
I Use it all the time. 85% is enough Juice for one workday and i simple want the battery to last as long as possible. I have had bad experience with batteries dying after ~3 years.
The 85% Rule is no BS. You also have to keep an eye on minimal SOC and never go under 10% to avoid unnecessary battery degradation. With that your battery will perform according to the specs (~700 cycles until 80% SOH, modern smartphone batteries). Otherwise it will suffer and that reduces cycle life. This is simply the state of current lithium battery tech.
From my pov, a full day usage requires 100% of charge because some of them cannot charge the phone while they are outside the whole day.
I have wireless chargers almost everywhere, so when my phone is not being used it's normally sitting on a charger. That means that it very rarely uses much charge, so charging to 85% is fine by me. If I knew that I was going to be away from a charger for a protracted period, then I'd probably charge to 100% beforehand.
I can't get too excited about battery management. If I need to buy a new battery for my phone at some point in the future (it has never happened yet...) then that's what I'll do.
i use 85% because i have quick carger in my car and it charge all the time.
at home I have wireless charger and when i need i put it.
I tried it for a few weeks and instead of having 80% leaving work I was at 50%, not really worth it since I'll probably have a new phone in six months. It was too much of a headache stressing about battery life without the phone fully charging.
No, I charged to 100%.