Will the battery develop a 'memory' if you recharge before being nearly depleted which would lessen battery capacity?
Can the NC be left plugged in 24/7 without damaging or lessening battery life?
Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses. Partial discharge on Li -ion is fine; there is no memory and the battery does not need periodic full discharge cycles other than to calibrate the fuel gauge on a smart battery.
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Is there a software that control how your battery will be charged?
I know there is a tweak that allow your device to connect to your phone and sync without charging it.
However, I'm looking for a program that will let my battery drain till like 2% before it start charging. The reason I want this to happen is because it'll improve the performance of my battery. It's always good to drain out the battery before fully charge it again.
I don't know about any app that will do that for you, but no charging while syncing can be done in the settings:
settings/system/energy -> Don't charge while conected to PC
Interresting?
You said you want to discharge your battery to almost 2%
Mayby interesting to read the story about Li-ion batteries.
http://www.batteryuniversity.com/index.htm
They say that's it isn't always good to discharge the Li-Ion battery totally.
besides:
Low Maintenance - no periodic discharge is needed; there is no memory.
Good Luck,
Greeting
FritZ
Fred1987 said:
You said you want to discharge your battery to almost 2%
Mayby interesting to read the story about Li-ion batteries.
http://www.batteryuniversity.com/index.htm
They say that's it isn't always good to discharge the Li-Ion battery totally.
besides:
Low Maintenance - no periodic discharge is needed; there is no memory.
Good Luck,
Greeting
FritZ
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Click to collapse
That's interesting
Thanks
this is totally wrong
you drain the ni/cd batteries for better performance not the cellularphones.
you drain the cellularphones battery ,potentially kill some battery cells.
drain it to 2% more than 15 times kills half of it capacity and/or age.
My xperia only lasts about a day with moderate internet usage, with moderate amount of necessary programs running (I ALWAYS close all apps after finishing).
Just a note, all my data connections are closed & tweaked to close after 2 mins of inactivity.
I heard that X1 batteries should last for ages.. at least 2 days to 4 days.
But I heard I need to flat out the battery, and then full charge it to 100%, followed by a soft reset. Apparently, this recalibrates the battery levels and users have reported battery life extend to 2 days to 3 days more!
So, my question is, if anyone has recalibrated their battery meters is..
1) After flatting my battery out, do I full-charge with the phone OFF or ON?
2) After I have fully charged, can I use PHM Soft Reset after windows boot-up?
Thanks.
I think you should buy another battery if you want more time.
My battery is down to about 50% on average after 8 hour work day. I have push e-mail and IM client and they always cause drain. 2-4 days would be if you didn't have consistent background services running.
As far as what you are saying about recalibrating the battery I think you are misinformed. Xperia has a Lithium-Ion or Lithium Polymer battery. Generally recharging frequently is better for it than doing a full drain. The type of full drain before recharge that you are describing was common recommended practice for Nickel Cadmium or Nickel Metal Hydride batteries. These could develop a "memory" in the battery which would dramatically reduce the amount of charge they would hold before they refused to charge.
If anyone has good evidence to the contrary I would love to be wrong, but I am pretty sure that with PUSH and IM there is no way to get a 1500mAH battery to last 3 days.
Also the radio you use and the area you are in (proximity to towers) can have a significant effect on your battery life.
charge it when it off for - + 1 Hr .
it will saty about 2 days
Hannigan174 said:
As far as what you are saying about recalibrating the battery I think you are misinformed. Xperia has a Lithium-Ion or Lithium Polymer battery. Generally recharging frequently is better for it than doing a full drain. The type of full drain before recharge that you are describing was common recommended practice for Nickel Cadmium or Nickel Metal Hydride batteries. These could develop a "memory" in the battery which would dramatically reduce the amount of charge they would hold before they refused to charge.
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Click to collapse
This is not absolutely true. It's true that Lithium battaries don't develop "memory" problems on their energy storing part, but they have a small circuit and this circuit is possible to develop the "memory" effect. This circuit is the one that decides that battery is full and cuts energy supply or informs about the percentage of the battery power remaining. This circuit for example is the reason that there is no point anymore on having the battery charged for 24 hours when you charge it for the first time.
IMHO you could try emptying the battery and charging it again when the device is off. Don't try to drain the battery completely as it could damage its power storing part.
i think i have the same problem about my X1. when i full charge my battery and after a few hours it goes 50% and sometimes my battery indicator says that i have 80% and after a soft reset the battery indicator says i have 20% weird...
Can anyone explain what is a battery cycle???
how should the charging pattern for our Galaxy S should be-
1. let the battery go down to less than 10% and then charge it to full.
or
2. charge in between(charging for some amount of time only- not letting battery to go to very low level).
Charge it when it convenient.
There's no free lunch. Draining the battery longer will reduce the amount of useful recharges. You can't overcharge the battery. On top of everything batteries are cheap.
At the end of the day throw your phone on charge and forget about it. If you use it a lot charge it during the day too.
Hi !
I have a nook HD+ which has been behaving strangely. Its battery life has reduced lately. I initially had problems with 'media' and 'SDcard' draining it quickly. But I was able to check that by formatting my SD card and deleting two 0 kB files in my internal memory.
However, the battery life, since, has not improved much. Moreover, I have started to see a few spikes in the battery charge chart (like the one in the pictures attached with this post) without having plugged the Nook in.
I am on CM 11 snapshot M8. I have already tried calibrating my battery by charging it to 100% and then removing batterystats.bin system file through PlayStore's 'Battery calibration' app, but the issue still remains unresolved.
Has anyone else faced a similar issue with her or his Nook ?
You cannot calibrate batteries in Android. Those silly apps just delete batterystats.bin and that is an Android file responsible for the statistics seen in your third screenshot. It gets deleted automatically when you unplug the charger at an almost 100% charge level, and it has nothing to do with the reported battery level!
The battery percentage as shown by Android comes from the kernel, the power management unit (PMU) driver to be more specific. The PMU, which usually is a separate chip inside the device, is responsible for monitoring, charging, and discharging the battery, among other things. There are many different PMU models, so this is highly hardware-dependent, and there most likely are no apps out there that can directly talk to all the existing PMUs to do something that's actually meaningful (which deleting batterystats.bin is not).
The only thing you can do is once in a while discharge the battery until the device turns off, then recharge it in one go to full capacity. That way, the PMU hopefully "calibrates" its battery monitoring by itself and should report more accurate state of charge values again. Measuring a battery's state of charge is rather difficult and not an exact science. Those percentage values are only estimates. So, the spikes you see on the battery percentage chart are a result of the imperfect method that is used to calculate the current battery percentage. Maybe this gets worse with aging batteries, I don't know. There's nothing really you can do, other than the complete discharge/recharge cycle you've already tried. Maybe a future firmware will come with a better battery percentage calculation method - but as I said, this is totally independent from Android, it's a low-level hardware and kernel driver thing.
Thanks a lot. A very informative post indeed !
Full battery charge/discharge cycles seems like the only solution then.
How will it affect the battery and its capacity to retain the charge though ?
To prevent any misunderstanding: you should definitely not discharge your lithium-ion based batteries to 0% all the time. Li-ion batteries live longer if they are kept between 40% and 80% charge. At 80% you won't get the full capacity / runtime, of course, but the battery will be able to endure more charge/discharge cycles that way. As I said, discharging to 0% followed by recharing to 100% should only be done occasionally, if you feel that the reported battery percentage has become too inaccurate. It probably won't fix the "ghost recharging" seen on the Nook and other devices. What probably happens here is that the battery's voltage is factored into the state of charge calculation. Li-ion batteries are usually charged to 4.2V per cell, which is "100%", and discharged to some arbitrary voltage, e.g. 3.5V, which would be considered "0%". Inbetween, the voltage curve is not linear. That is, 50% would not necessarily correspond to 3.85V (=(4.2+3.5) / 2). Also, the voltage depends on the power draw to some extent. If the tablet draws a higher current from the battery, the voltage will sag. If you then put the tablet into standby, reducing the current to a very small value, the battery voltage will recover and increase again a bit. This is what might cause those spikes (although they shouldn't be that large).
This and more can be learned on Battery University. And here's a source for the batterystats.bin calibration myth.
Thanks a lot Tzul. You have been very helpful !!
I may have to replace my battery soon. If the battery life does not improve, I guess I will have to buy a replacement battery from a third party replacement battery seller.
Haven't had a new phone in a while now and I can't find it anywhere wether I should format the battery on the first few charges and if so, what is the procedure?
You don't have to do it. You just remember to not to completely discharge your battery and you will be fine.
Lithium-ion battery or Lithium polymer battery doesent have to be formated, or formed !
Only Nickel–metal hydride battery (NiMH) have to be formed.
L-Ion on the other hand doesen't like to be drained to 0%, if you want to prolong the battery life, you shouldn't let the battery to get under 30% if you can manage to do that in real life.