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Is it possible that if i use another device charger like blackberry or whatever compatible may give me a better battery life ? I saw on x8 forums a guy claimed using an htc charger and posted a screenshot where it showed up to 6 days of usage !
Thaanks.
Sent from my X10i using XDA Premium App
shahkam said:
Is it possible that if i use another device charger like blackberry or whatever compatible may give me a better battery life ? I saw on x8 forums a guy claimed using an htc charger and posted a screenshot where it showed up to 6 days of usage !
Thaanks.
Sent from my X10i using XDA Premium App
Click to expand...
Click to collapse
The charger is just a simple 5 volt power supply.
The charging circuits are in fact integrated into the device/phone itself.
You woulnd't be able to affect the battery capacity in any way by using a different charger.
I'd say that claim about improved battery life due to changing the charger is very unlikely. I'd call it a fake.
Perhaps improve charging time, but not improving battery capacity.
SysGhost said:
The charger is just a simple 5 volt power supply.
The charging circuits are in fact integrated into the device/phone itself.
You woulnd't be able to affect the battery capacity in any way by using a different charger.
I'd say that claim about improved battery life due to changing the charger is very unlikely. I'd call it a fake.
Perhaps improve charging time, but not improving battery capacity.
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Click to collapse
oooh thanks because the guy said the other charger was way more powerfull and it overcharged which caused an extreme change in his battery life but thanks anyways
shahkam said:
oooh thanks because the guy said the other charger was way more powerfull and it overcharged which caused an extreme change in his battery life but thanks anyways
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Click to collapse
Overcharging a lipo battery in a device such as the X10 (Lithium Polymer) would end up in either one of these scenarios:
Scenario 1: Phone and battery overheats, thermal protection kicks in and disables charging permanently.
Scenario 2: Phone and battery overheats, frying the internal charging circuits. Permanent damage.
Scenario 3: Phone and battery overheats, causing an explosion. Worst case: exploded battery catches fire.
Battery fires are tricky to put out and can cause major damage, not only to the device, but also to everything around it.
Don't worry tho.
As long as the charger, or whatever power supply you're using, gives 5 volt DC with correct polarisation, you'll be safe.
But as soon you fiddle around with different voltages, specially anything higher than 5 volts, it starts getting dangerous.
There is a common misunderstanding on how volts and currents works.
People tend to believe a charger with higher currents will do better. That is wrong.
It isn't the charger that "pushes" the current. It's the device that "draws" the current needed.
Example: If the device needs 700 miliamps, and the charger can give 5000 milliamps there will be 4300 milliamps left over.
In theory one could connect 7 devices to the same charger: 7x700=4900, and still have 100 milliamps left over.
What would happen if the device draws more than the charger can give? The device wouldn't charge at all, as the charger would "drop out" in one way or another by either shutting down, or lowering it's own voltage below "acceptable level"
SysGhost said:
Overcharging a lipo battery in a device such as the X10 (Lithium Polymer) would end up in either one of these scenarios:
Scenario 1: Phone and battery overheats, thermal protection kicks in and disables charging permanently.
Scenario 2: Phone and battery overheats, frying the internal charging circuits. Permanent damage.
Scenario 3: Phone and battery overheats, causing an explosion. Worst case: exploded battery catches fire.
Battery fires are tricky to put out and can cause major damage, not only to the device, but also to everything around it.
Don't worry tho.
As long as the charger, or whatever power supply you're using, gives 5 volt DC with correct polarisation, you'll be safe.
But as soon you fiddle around with different voltages, specially anything higher than 5 volts, it starts getting dangerous.
There is a common misunderstanding on how volts and currents works.
People tend to believe a charger with higher currents will do better. That is wrong.
It isn't the charger that "pushes" the current. It's the device that "draws" the current needed.
Example: If the device needs 700 miliamps, and the charger can give 5000 milliamps there will be 4300 milliamps left over.
In theory one could connect 7 devices to the same charger: 7x700=4900, and still have 100 milliamps left over.
What would happen if the device draws more than the charger can give? The device wouldn't charge at all, as the charger would "drop out" in one way or another by either shutting down, or lowering it's own voltage below "acceptable level"
Click to expand...
Click to collapse
Thanks for the very detailed explication ! I thanked you and i thank you lol
Sent from my X10i using XDA Premium App
Can anyone recommend a faster charger? The wall charger still takes upwards of 3-4 hours to charge, was hoping there was something that puts out some more power.
How many amps does the stock charger put out/how much can the phone 'handle'? (Sorry, I've never messed around with circuits and electronics like that, I'm not sure what the correct terms are)...
For example, http://www.amazon.com/Scosche-reVIVE-Dual-Charger-iPad/dp/B003N7NO4Q that car charger has a 2.1a socket, meant to charge the ipad, would that, in theory, charge the sgs2 quicker than a standard car charger, putting out ~1amp?
edit: realized this is better suited for the accessories forum, feel free to move.
I believe the wall charger is the fastest charger that we have available. I could be wrong, but I haven't found anything faster.
If you turn off your phone and throw it on the wall charger, it will charge faster as the phone is not on to use any battery... but thats probably not what you're looking for.
Your best bet would be to buy an extra battery and external charger and just swap the batteries when they are low. Thats what I do, and its much better than keeping your phone plugged in most of the day.
Our phone has an internally set 650 mA charge current limit - adding a beefier charger won't do anything.
It doesn't help that Samsung put in a crippled charger chip in our device with nonadjustable current, instead of using the more capable one already present in the MAX8997...
and even if the phone lets it charge faster, you really dont want a charger that charges too fast. I'm pretty sure that will murder the battery.
Thanks for the answers, all.
penguinlogik said:
Your best bet would be to buy an extra battery and external charger and just swap the batteries when they are low. Thats what I do, and its much better than keeping your phone plugged in most of the day.
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Click to collapse
This is fine for "emergencies," but swapping batteries will throw off your battery stats.
Rrryan2 said:
This is fine for "emergencies," but swapping batteries will throw off your battery stats.
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Click to collapse
How would swapping batteries thow off battery stats? It seems like everything resets once you boot up with the new battery, and isn't battery charge read off the raw voltage?
Lithium Ion batteries require a very particular two-step charging procedure. The battery has to be charged at constant current until the voltage rises to 4.2V, and then it needs to be charged at constant voltage (4.2V) until the charge current drops to about 10% of its starting value.
The amount of current allowed in the CC phase is a function of the battery's chemistry and capacity. It's expressed as some multiple or fraction of "C", the capacity of the battery. A 1C charge rate on a 1000mAh battery is 1A. The large LiPo batteries I use for my RC Heli and Airplane fleet will charge at 5C, for some of them this is better than 10A. But Li-Ion batteries usually can't tolerate more than 1C (and they usually charge at half that rate since this makes them last longer).
The harder you push the charge rate, the faster you wear out the battery and the more likely it is to fail. If you exceed the maximum charge rate, the battery is very likely to fail catastrophically (failure = fire). I charge my big LiPo batteries in a fireproof box for this reason.
My advice is, leave the phone's charging circuit alone unless you know what you're doing.
penguinlogik said:
How would swapping batteries thow off battery stats? It seems like everything resets once you boot up with the new battery, and isn't battery charge read off the raw voltage?
Click to expand...
Click to collapse
Sure, it reads raw voltage. But the top end and bottom end worsen as the battery ages, and batterystats.bin doesn't know where those values are for a given battery until it's seen them. The system wasn't really designed to take into account the user swapping in multiple batteries.
Rrryan2 said:
Sure, it reads raw voltage. But the top end and bottom end worsen as the battery ages, and batterystats.bin doesn't know where those values are for a given battery until it's seen them. The system wasn't really designed to take into account the user swapping in multiple batteries.
Click to expand...
Click to collapse
Huh... I'll let you know in a year how this battery swapping thing goes then. But wouldn't wear be the same on both batteries if I just swap them daily?
penguinlogik said:
Huh... I'll let you know in a year how this battery swapping thing goes then. But wouldn't wear be the same on both batteries if I just swap them daily?
Click to expand...
Click to collapse
I did this with my captivate where I would swap batteries everyday. Much better than charging if you ask me.
Does leaving your Galaxy Note plugged in after it has reached 100% charged harm the battery?
From what I heard and read numerous times, you shouldn't leave a phone on a charger for more than 24 hours. I have heard many different opinions on this, but I think leaving a phone to charge overnight (6-10 hours average???) on a consistent base shouldn't harm the battery in general.
Is there "memory"?
Ceasare said:
Is there "memory"?
Click to expand...
Click to collapse
Only in nickel cadmium batteries
I thought with Li-ion batteries its the number of total charges before it starts going bad?
ukic said:
I thought with Li-ion batteries its the number of total charges before it starts going bad?
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Click to collapse
Yep. Same with all batteries.
Hard to say how many charge cycles the OEM batteries are rated for.
From Samsung sdi...
No Memory Effect
Lithium ion batteries have no memory effect, as seen in Ni-Cd and Ni-MH batteries, from which repeated charging and discharging reduces charging capacity to an insufficient level.
Long Life Cycle
Lithium ion batteries last through more than 500 repeated charges and discharges, making them very economical.
also from other readings...
I am pretty sure that Lithium-ion batteries for smartphones cannot be overcharged because the device's circuitry stops charging the moment it reaches 100% and allows it to drop a certain % till it recharges. That's why sometimes your phone's battery % will reduce so quickly after a full charge because it is really not at 100% when you unplug it.
Manufacturers, however, will still recommend disconnecting after a full charge.
Another...
it is not good to allow your Lithiumo-ion battery to fully drain then recharge repeatedly, as many suggest, to "train" your phone...that's puts a stress on the battery and is not good.
A low % (15-20%) then recharging to full one time will reset the meter and make it more accurate but not lengthen the batteries life.
all that said...I plug mine in at night and unplug in the morning.
This link talks about the Samsung battery and charging. It sounds educated on the issue but who knows....
http://www.geeksailor.com/how-to-improve-samsung-galaxy-note-battery-life/
Summary
1. Use wall charger not computer
2. Unplug when charged
3. Don't recharge until battery is below 10%
I put the phone on my desk dock every night whether it needs it or not. I do find myself topping it off too much also.
I have developed a kernel patch that allows controlling the charge voltage of the battery. Lowering the charge voltage will typically increase battery cycle life by 2x for 0.1V and potentially much more at high temperatures. The default charge voltage is 4.3V, so with 4.2V you can expect 2x the battery life; with 4.1V 4x the battery life (the battery won't be fully charged).
The patch adds a new sysfs control: '/sys/devices/i2c-0/0-006a/float_voltage'. The setting is in milli-Volt; 3800mV - 4300mV is allowed. The charger supports 20mV increments.
For setting the charge voltage permanently, you can add something like:
echo 4100 > /sys/devices/i2c-0/0-006a/float_voltage
to an init script.
For my N7:
4.0V -> 73% charge
4.1V -> 83% charge
4.2V -> 93% charge
4.3V -> 100% charge
(The patch is against the stock kernel.)
The patch is included in the ElementalX kernel:
http://forum.xda-developers.com/showthread.php?t=2389022
and the Glitch kernel:
http://forum.xda-developers.com/showthread.php?t=2449919
anyone care to try first? is it any different than undervolting with custom kernel?
adichandra said:
anyone care to try first? is it any different than undervolting with custom kernel?
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Click to collapse
This is very different. It isn't supposed to increase battery runtime, it's supposed to decrease it.
It allows allows to not completely charge the battery. In return, the battery won't deteriorate as quickly. Making up numbers here: if the battery would normally survive 300 charge cycles (charged to 4.3V); if you only charge to 4.2V (or about 93% capacity), the battery would last for 600 charge cycles before it's dead.
ah i thought this tweak was about to give double battery life in one single charge. might be usef for others but not me though since i never use a gadget more than 18 months. thanks
adichandra said:
ah i thought this tweak was about to give double battery life in one single charge. might be usef for others but not me though since i never use a gadget more than 18 months. thanks
Click to expand...
Click to collapse
No it extends your battery life as in the longevity. The battery life that we usually think of is how long the battery will last on a charge like you were thinking. That's not what this mod is for. Such a mod that you were hoping for doesn't exist.
tiny4579 said:
No it extends your battery life as in the longevity. The battery life that we usually think of is how long the battery will last on a charge like you were thinking. That's not what this mod is for. Such a mod that you were hoping for doesn't exist.
Click to expand...
Click to collapse
Oh how they can wish though. Though still good work regardless, and very useful.
Anyone know the actual estimate for the amount of charge cycles the battery can handle before giving up the ghost?
I tend to agree with adichandra.. In today's consumer market, most gadjets are usually obsolete after 18 months..
Sent from my Nexus 7 using XDA Premium 4 mobile app
So charge cycles are extended by never allowing the battery to charge to 100%? Sounds similar to a feature on my thinkpad laptop that let's you set the charge and discharge thresholds.
Thank you for posting this!
OJ in Compton said:
So charge cycles are extended by never allowing the battery to charge to 100%? Sounds similar to a feature on my thinkpad laptop that let's you set the charge and discharge thresholds.
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Click to collapse
Yes. Same idea. Some Samsung laptops have this as well.
How can we apply this patch? Sorry for such a noob question...
marcus6999 said:
How can we apply this patch? Sorry for such a noob question...
Click to expand...
Click to collapse
If you are not building your own kernel, there will hopefully be a few kernels in this section that will include this.
If you are building your own kernel, you can take the posted 'smb345-charger.c' and replace 'drivers/power/smb345-charger.c' in your kernel tree. It's based on the stock kernel.
tni.andro said:
This is very different. It isn't supposed to increase battery runtime, it's supposed to decrease it.
It allows allows to not completely charge the battery. In return, the battery won't deteriorate as quickly. Making up numbers here: if the battery would normally survive 300 charge cycles (charged to 4.3V); if you only charge to 4.2V (or about 93% capacity), the battery would last for 600 charge cycles before it's dead.
Click to expand...
Click to collapse
Most kernels on all my phones have ability to set precisely the % you want battery charged up too. Haven't seen it for flo/razor
Sent from Pimped N7 (2013) XDA PREMIUM
Hmm that's a good suggestion. Truly to increase the battery charge cycle life by almost 2x you just have to charge it until 90%.
So basically you don't charge it to max voltage and you don't let the charger begin the high voltage stabilization.
So with normally (good Lithium batteries these days) 500 charge cycles you go for 1000 and so on.
I was searching for something like that, because it's a tablet that can last through many years.
I think it's a great feature and all kernels should implement and have it at stock. And let the user decide and choose voltage with an easy script if he wants it.
Battery life year extender
Thank you
tni.andro said:
If you are not building your own kernel, there will hopefully be a few kernels in this section that will include this.
If you are building your own kernel, you can take the posted 'smb345-charger.c' and replace 'drivers/power/smb345-charger.c' in your kernel tree. It's based on the stock kernel.
Click to expand...
Click to collapse
I'm going to add this in the next update to ElementalX
CTCaer said:
Hmm that's a good suggestion. Truly to increase the battery charge cycle life by almost 2x you just have to charge it until 90%.
So basically you don't charge it to max voltage and you don't let the charger begin the high voltage stabilization.
So with normally (good Lithium batteries these days) 500 charge cycles you go for 1000 and so on.
Click to expand...
Click to collapse
There is no good reason to use battery percentage to terminate the charge, instead of using a lower charger float voltage. Likely the only reason a percentage cutoff was used in other cases is that the charger chip didn't support setting the voltage.
The voltage setting is also much more predictable - the battery gauge can be quite unreliable in terms of charge estimate and easily jump 10% when it recalibrates itself.
Can anyone post the source of info for 2x battery cycle if only charge up to 4.2v? I read that not charging lithiums to full charge can help extended life but never seen anyone give estimates like 2x at 4.2v and 4x for 4.1v. Estimates seem a bit high to me. I agree with others here that this tablet can last a few years if the battery holds up so I was planning on replacing the battery after a year or two but if lowering the battery voltage really works this well then I will try it. There is a pretty big downside of having almost 10% less battery life all the time.
neotekz said:
Can anyone post the source of info for 2x battery cycle if only charge up to 4.2v?
Click to expand...
Click to collapse
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://macomp.ru/wp-content/uploads/2012/04/1607542.pdf
http://www.eetasia.com/STATIC/PDF/200806/EEOL_2008JUN16_POW_TA_01.pdf
tni.andro said:
There is no good reason to use battery percentage to terminate the charge, instead of using a lower charger float voltage.
Click to expand...
Click to collapse
Of course there is. The last 10% to 20% are causing the most aging of a lithium ion battery.
If you really want to prolonge the live of your battery charge it only up to 80%.
There is no real reason to limit the voltage as the stock hardware and drivers handles this already really good by adopting the charging voltage dynamically.
There's no reason to change charger's voltage. The only thing there's meaning in changing in the charger side is output current.
For example with the size of Nexus battery you can use a 1A one or 800mA. It will charge slow but you can maintain some more charge cycles.
Still the most important is to not let the battery reach it's maximum voltage (100%) and let the charger do it's voltage stabilization.
As also said from others before that's what takes the battery charge life away.
The best for good juice and year protection is 90%.
The best for year extension and low juice is 60%.
And of course, when you really need 100% juice (trip, flight, beach, whatever) you just charge it full and don't care for some cycles.
Good batteries have -+500 Full charge cycles. So almost one and a half year if you go from 100->0->100 everyday, before the capacity (mAh) of battery drops.
tni.andro said:
There is no good reason to use battery percentage to terminate the charge, instead of using a lower charger float voltage.
Click to expand...
Click to collapse
TDO said:
The last 10% to 20% are causing the most aging of a lithium ion battery.
Click to expand...
Click to collapse
That's correct.
If you really want to prolonge the live of your battery charge it only up to 80%.
Click to expand...
Click to collapse
That's exactly what lowering the charger float voltage can do. The original post has numbers for different voltages. E.g. with a 4.1V charger float voltage, the charger will stop charging at 83% charge.
There is no real reason to limit the voltage as the stock hardware and drivers handles this already really good by adopting the charging voltage dynamically.
Click to expand...
Click to collapse
The stock driver sets the charger float voltage to 4.3V. Given that there is current limiting (1200mA input current limit), the voltage will be lower initially, but the voltage regulation is 4.3V once the current is low enough.
Like I mentioned, using the battery percentage as cutoff isn't great, since the battery gauge can be pretty inaccurate (can be off by >10%). Setting the float voltage lower results in the same charge cuttoff every time, even if the battery gauge makes an inaccurate estimate.
Hi guys,
I want to share to those that may be doesn't know how to extend battery for a little bit.
I have tested this method for months and it works well on my D802 G2.
Here how to do it :
1) when you charging your phone and the battery status shows 100% don't unplug your charger yet
2) touch your charger and if it still hot, don't unplug it
3) you can unplug your charger when it is became cold, on my case, it could took around 15-20 minutes later
See for your self, if it could improve your battery life. For me, it is like having a 110% battery capacity.
For best result
Charge your phone while it is off and battery level not less than 15%
htcm7 said:
Hi guys,
I want to share to those that may be doesn't know how to extend battery for a little bit.
I have tested this method for months and it works well on my D802 G2.
Here how to do it :
1) when you charging your phone and the battery status shows 100% don't unplug your charger yet
2) touch your charger and if it still hot, don't unplug it
3) you can unplug your charger when it is became cold, on my case, it could took around 15-20 minutes later
See for your self, if it could improve your battery life. For me, it is like having a 110% battery capacity.
For best result
Charge your phone while it is off and battery level not less than 15%
Click to expand...
Click to collapse
Actually its the trickle charging going on after it reaches 100%
LG G2
jiteshj said:
Actually its the trickle charging going on after it reaches 100%
LG G2
Click to expand...
Click to collapse
May be, ... or may be not. There are several tech to charge Lipo battery, and we don't know which tech used in G2.
htcm7 said:
Hi guys,
I want to share to those that may be doesn't know how to extend battery for a little bit.
I have tested this method for months and it works well on my D802 G2.
Here how to do it :
1) when you charging your phone and the battery status shows 100% don't unplug your charger yet
2) touch your charger and if it still hot, don't unplug it
3) you can unplug your charger when it is became cold, on my case, it could took around 15-20 minutes later
See for your self, if it could improve your battery life. For me, it is like having a 110% battery capacity.
For best result
Charge your phone while it is off and battery level not less than 15%
Click to expand...
Click to collapse
Yeah, I got it. i saw when i charged my LG G2 over the night, tomorrow its battery decreased very slowly. But sometime i charged it around 9x%, the battery decreased so fast @@
Yeah right.
I'm doing this since still using G Pro,
100 to 99 = Insane
99 - 98 = At least better than normal
98 - 0 = Normal
I use Android Tuner, you can see what your actual charge voltage is and track when it really is full before you unplug.
Sent from my VS980 4G using Tapatalk
This is balderdash.
this is poppycock.
it actually works, noticed it from first week.
Sent from my LG-D802
i just leave my charger plugged in. when i go to bed, i plug it in, and 6-7 hours later i unplug it. it trickle charges when it gets to 100% anyway. meaning the charge goes down a little and goes back up a little. yes, i guess this wastes more electricity but it is so minor. also the G2 has a capability that when fully charged at 100%, the voltage of the battery is different, so the battery lasts longer at the 100% mark. once it hits 99%, battery life starts to drop at a normal rate. i read about this in another post on xda, forgot where. it used to take me 25 minutes of watching an HD mkv file at max brightness on mx player to drop from 100 to 99. nowadays it takes 20 minutes.
The best results will be if you charge the phone from PC usb port,charge it at night and take it in the morning.
It sounds good. I'll try it.
Thank you!
For best results charge your phone in the freezer.....
Ok just had too
But this is true ^. LOL @woof123, a slow charge doesn't change a thing with these batteries. Fast charge doesn't even get hot enough to be detrimental. The top 1% idea is indeed true. I'm gonna make a slim refillable liquid nitrogen cartridge to place over battery. Win.
Im not talking about battery degration from fast charging,by charging my phone over the usb i noticed that it lasts longer vs the charger.
Just use greenfiy and the donate version
Hibernate every app besides system Apps.
Nothing will run ever again in background while hibernated.
And yes it works and no the app itself does not cause its own drain.
Greenify is highly noted in every forum across xda
Sent from my LG-D801 using xda app-developers app
With these non removable batteries, I'm more concerned with ensuring that I don't harm the battery. I was reading that leaving it charging past 100 percent might shorten its life span. I've been using. Battery full notifier to avoid doing that.
Sent from my LG-LS980 using XDA Premium App
The general behavior of charging batteries like these is that the first 80% of the actual battery capacity gets charged very quickly (usually takes 1-3 hours) then the last 20% of the battery trickle charges (this also takes another 1-3 hours). I think what's happening here is that the phone itself only reports the first 80% of the actual battery capacity because that's the part that charges quickly, and anything over what the phone reports as "100%" is the last 20% of the actual battery capacity trickle charging.
As for any harm this could bring to the battery, batteries like the one in the LG G2 last longer if you avoid deep discharges (e.g. charging to 100% from 50% at the end of the day versus charging to 100% from 0% after every two days), but it might not even matter since LG Chem's higher end batteries tend to be rated for at least 800 full charge cycles (last year's average smartphones were rated for ~500), which covers over two years of very decent battery performance even if you were to charge from 0 to 100+% battery every day. Even if you use up all these charge cycles, you're still going to be left with ~70-80% battery capacity of the phone you initially bought.
A side note from all this is that any anecdotes of long battery life (where the initial battery percentage reported was 100%) is generally unreliable because it's not conveniently possible to know how much over "100%" the phone's battery has been trickle charged.
My battery life is ridiculously good on this phone anyways...
Sent from my LG-D800 using Tapatalk
It's true, 100-99% yields insane use time, but only if you use an app like Battery Monitor Widget to let you know when the battery has stopped accepting power (+0 mA, voltage ~ 4370 mV). It is also true though that this reduces overall battery health a little (it might become noticeable if you do this all the time).
And btw, charging overnight is a very bad idea.
Sent from my LG-D802 using xda app-developers app