Hi everyone,
I found a way to improve battery life of our phone. We just charge our phone with usb cable in usb mass-storage mode.
Let it full charge and enjoy strongly battery life. It worked for me and after that you didnt need to charge with cable again just do normal charge with adapter.
Just tested with my phone CM10 A2. Battery drain about 2%(6hrs didnt do anything).
Enjoy!
Try reboot your phone and see your battery drain or not
Sent from my GT-I9003 using xda app-developers app
Lol, no difference at all, you probably just did enough cycles for it to adjust, battery life depends on your usage really.. and this is not a 'fix'.
@Ave666, rebooting will always take your battery down, it will slowly ramp to the correct value again after a few minutes.
Skander1998 said:
Lol, no difference at all, you probably just did enough cycles for it to adjust, battery life depends on your usage really.. and this is not a 'fix'.
@Ave666, rebooting will always take your battery down, it will slowly ramp to the correct value again after a few minutes.
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Hello all,
There is a drop of true. According to battery's chemistry, it's better to charge with lower amperage. Usual USB port provides 500mAh, ordinary charger 750 to 1000mAh.
Of course, charging via usb takes longer, but battery packs a little more voltage. If you have some app, witch checks battery voltage, you can check it. Read more
http://www.powerstream.com/li.htm
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm
cukierkas said:
Hello all,
There is a drop of true. According to battery's chemistry, it's better to charge with lower amperage. Usual USB port provides 500mAh, ordinary charger 750 to 1000mAh.
Of course, charging via usb takes longer, but battery packs a little more voltage. If you have some app, witch checks battery voltage, you can check it. Read more
http://www.powerstream.com/li.htm
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm
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Click to collapse
Either way, won't 'magically' make a difference from the first charge, that is used to preserve the battery, and not make it magically last longer.. lol.
cukierkas said:
Hello all,
There is a drop of true. According to battery's chemistry, it's better to charge with lower amperage. Usual USB port provides 500mAh, ordinary charger 750 to 1000mAh.
Of course, charging via usb takes longer, but battery packs a little more voltage. If you have some app, witch checks battery voltage, you can check it. Read more
http://www.powerstream.com/li.htm
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm
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Click to collapse
So you mean to say lower mA battery charger is good for battery health?? I have observed that 1A battery quickly charges battery but also rises temperature of phone as well as battery drian is little bit higher.
I don't think that it makes a real difference. Charging our battery (1650 mAh) with a normal charger at 1A current is fine as it's charing with 0.6C. The charger automatically stops charging when the voltage of your Li-Ion cells have reached the wanted voltage AND the current has gone low (about 5% or a bit less; depends on charger). Much more important is that you don't stress your battery too much, so that the capacity doesn't decease that fast.
Never deep discharge Li-Ion batteries. This kills your battery (Should not happen as phone automatically turns off, but then don't try to turn it on again)
Avoid full full charges. Sounds silly, but voltage related stress is lower which is good for your battery health.
(Thats the reason, why I store my Li-Po batteries for my RC helicopter at 40%-50% charge at the end of summer)
Remember: Bad battery health = low capacity = poor battery life = quickly discharged phone
Charge often to keep your battery at a medium charge level, which is best for your batteries.
Li-Ion batteries dont know the "memory effect". Partly charging and discharging is no harm.
Vishal, mainly, yes. I'm charging usually via USB.
Sent from my GT-I9003
vishal24387 said:
So you mean to say lower mA battery charger is good for battery health?? I have observed that 1A battery quickly charges battery but also rises temperature of phone as well as battery drian is little bit higher.
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Technically, the slower the charge the better it is, but the difference is very, very very unnoticeable..
Skander1998 said:
Technically, the slower the charge the better it is, but the difference is very, very very unnoticeable..
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Click to collapse
Regards that "unnoticable": Are you saying that in general as you did for the fact before? I'm asking because charge currents greater than 0.85-1C with standard Li-Ion batteries cause a noticable effect.
I have tested some Li-Po batteries with different charge currents, as they where cheaper than the ones I am using for my helicopters. The one that I have charged with 0.75C behaved quite fine, while the one with 1.25 C didn't like that charge currents very much.
Taraen said:
I don't think that it makes a real difference. Charging our battery (1650 mAh) with a normal charger at 1A current is fine as it's charing with 0.6C. The charger automatically stops charging when the voltage of your Li-Ion cells have reached the wanted voltage AND the current has gone low (about 5% or a bit less; depends on charger). Much more important is that you don't stress your battery too much, so that the capacity doesn't decease that fast.
Never deep discharge Li-Ion batteries. This kills your battery (Should not happen as phone automatically turns off, but then don't try to turn it on again)
Avoid full full charges. Sounds silly, but voltage related stress is lower which is good for your battery health.
(Thats the reason, why I store my Li-Po batteries for my RC helicopter at 40%-50% charge at the end of summer)
Remember: Bad battery health = low capacity = poor battery life = quickly discharged phone
Charge often to keep your battery at a medium charge level, which is best for your batteries.
Li-Ion batteries dont know the "memory effect". Partly charging and discharging is no harm.
Click to expand...
Click to collapse
nice info thx.
Related
I've heard so many different answers over the years about charging, draining, cycling etc.
For the most part I guess it comes down to ni vs li.
For this discussion i'd like to keep it purely in regards to lithium batteries.
- Do batteries have a limited life cycle?
e.g. X number of charges.
- Is it ok to do half charges if we don't have time to fully charge to 100%?
- Is it ok to keep your battery plugged in at all times as you are using it?
e.g. When i'm at work all day I leave my phone out on the desk and use it as a clock/notification screen. When I'm at home I do the same. The only time I take it off the charger is if I am not at work or at home. So the battery could be connected for a good 20 hours at a time while constantly being used.
- Is it best to use the phone until the battery is completely depleted and shuts off automatically?
- What types of patterns degrade the life of the battery quicker?
- How can we prolong the life out of our batteries in terms of charging?
e.g. use ac over usb.
- Is it ok to use chargers that have a lower voltage rating than the native charger?
- What risks do you run from using cheap no name chargers?
100+ views 0 replies =/
http://www.batteryuniversity.com/parttwo-34.htm
A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.
Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as "digital memory". Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate.
Aging of lithium-ion is an issue that is often ignored. A lithium-ion battery in use typically lasts between 2-3 years. The capacity loss manifests itself in increased internal resistance caused by oxidation. Eventually, the cell resistance reaches a point where the pack can no longer deliver the stored energy although the battery may still have ample charge.
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The question is often asked, should the laptop be disconnected from the main when not in use? Under normal circumstances, it should not matter with lithium-ion. Once the battery is fully charged, no further charge is applied. However, there is always the concern is malfunction of the AC adapter, the laptop or the battery.
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Generally speaking, batteries live longer if treated in a gentle manner. High charge voltages, excessive charge rate and extreme load conditions will have a negative effect and shorten the battery life.
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So, in response to your questions:
Yes, they have a limited life span - they will degrade after a certain number of charge/discharge cycles, and they also degrade over time even if not used.
As there is no memory effect, I don't anticipate there being a problem from half charges.
Barring the unlikely possibility of the AC adapter malfunctioning, there is no harm in leaving the phone plugged in.
It is best to top up the charge whenever possible. It has a negative effect on battery life to run down lithium ion batteries to run them down to flat, although it's worth doing occasionally to calibrate digital battery gauges.
Frequent full discharge cycles, excessive heat and high battery load reduce battery life.
I'm not certain if USB is better or worse than the AC adapter, but as USB only puts out 500mA and AC adapters may be capable of more, USB may be slightly gentler on the battery but take longer to charge?
I wouldn't recommend using different voltage chargers, but I don't know about this specifically. USB and most AC adapters for phones provide 5V. Certainly don't use one that puts out a higher voltage. A lower voltage may not be able to charge the battery properly.
I don't know about cheap adapters. If they provide reliable output that matches what your device requires then there should be no problem; if they don't, then that could cause issues.
I just got my Extended battery and im trying to charge it fully but it wont charge past a certain point. While Plugged in i can watch it discharge slowly. Anyone with this battery have this problem?
em2drvr03 said:
I just got my Extended battery and im trying to charge it fully but it wont charge past a certain point. While Plugged in i can watch it discharge slowly. Anyone with this battery have this problem?
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I would charge it first time with the phone off, and then wipe battery stats to be on the safe side.
Sent from my SCH-I535 using xda app-developers app
perhaps it has to do with the fact that the battery norm voltage is 3.7 instead of 3.8. full charge voltage will also vary too. Anandtech did an article on one of motorola phones.
hyperion batteries also has a integrated chip that prevents overcharging beyond 4.2v (which is 100% for 3.7v batteries), 3.8v batteries have higher full charge voltage. 4.35v i believe.
Mine charges 100%. I did charge it the first time with the phone off, but I don't know if that matters or not.
I love that battery with the Hyperion extended case.
First of all . Every night when I go to bed, I like to plug my phone in and charge it while I sleep.
6-7 hrs or so.
Is there a way to stop this fast charge feature , or turn it off. It's a cool addition, however I feel I'm doing more harm leaving it plugged in all night??
Could I just use my old blackberry charger block instead?
markdexter said:
First of all . Every night when I go to bed, I like to plug my phone in and charge it while I sleep.
6-7 hrs or so.
Is there a way to stop this fast charge feature , or turn it off. It's a cool addition, however I feel I'm doing more harm leaving it plugged in all night??
Could I just use my old blackberry charger block instead?
Click to expand...
Click to collapse
Technically , yes you can use any charger you'd like. You don't have to stick with the fast charger. I will though , highlight that the fast charger is optimized for the S6 battery and the battery is optimized for it , so there is no harm in keeping the charger plugged in.
You can't damage the battery if you leave it on all night. All phones have special circuitry to stop charging once the battery is full.
Fast charge works by increasing the voltage, not the current. This is a much safer approach for increasing the power transfer from charger to phone. As it is primarily the amperage that increases thermal output etc.
Although the phone will get warm initially while charging, all phones will. But when the battery reaches full capacity, the battery circuit actually says "okie dokie. I've got what I need now. Let's just trickle charge to keep me full till my boss is ready" and hardly any power will flow through, and the temperature will drop.
Actually makes me wonder about setting up a temp/time monitor while charging to see exactly what happens and when now :3
But as others have said, both charger and battery are optimised for it, and it is plenty safe enough. It's what I do!
There is also nothing stopping you using any other (safe and preferably branded) 5v 1A charger. It will just charge slower. Much like what you are already used to. 3-4 hours instead of 1-1.5ish hours.
solitarymonkey said:
Fast charge works by increasing the voltage, not the current.
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Forgive me, I dropped my electrical engineering major, but when we're dealing with direct current, doesn't increasing the voltage by definition increase the current if the resistance doesn't change?
I used the Ampere app to compare the regular charger, from which the phone pulled around a half of an amp, with the fast charger, from which the phone pulled a full amp.
Sallyty said:
Battery life depends on the number of repeated charge and discharge, so should avoid charging the battery is more than power, it will shorten the battery life.
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I'm not really sure what you mean by " so should avoid charging the battery is more than power", but battery lifespan in lithium batteries is decreased by FULL discharges and recharges. The best possible routine for making lithium batteries last is to charge early and often. And as genetichazzard pointed out, there is circuitry included that stops the charging (or trickles it) once it reaches full charge.
"Rapid charging", in general, will cost you life in batteries, but that is usually in reference to 4A-6A rapid charging, where this new Samsung charger still does not exceed 2A. I trust their battery engineers. They've one of two things: they have either engineered the batteries and chargers to last in their first sealed body phone, or they are trying to screw us by making a battery/charging system that will force us to pay for a costly battery replacement. They won't stay in business much longer if they go the second route.
flu13 said:
Forgive me, I dropped my electrical engineering major, but when we're dealing with direct current, doesn't increasing the voltage by definition increase the current if the resistance doesn't change?
I used the Ampere app to compare the regular charger, from which the phone pulled around a half of an amp, with the fast charger, from which the phone pulled a full amp.
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I have no idea of the complexities in the technology, or how the phone itself deals with the current from the charger. But I looked at the fast charger that came with my s6 last night, and it is rated like this;
9V 1.67A
5V 2A
The 9V output provides a 15W of power, whereas the the 5V output provides 10W of power.
And after a little bit of reading (can't site my source now as I forgot the website), it is the current that generates heat in the components (such as wires).
So by upping the voltage, the charger is able to transfer more energy to the phone safer than if manufacturers continued to just increase the current.
There will be a smart switching method of some sort within the charger to go from the 5V circuit to the 9V circuit, with a slightly higher resistance to drop the current.
And before I ramble on without making much sense, that is what I have learnt
---------- Post added at 02:05 PM ---------- Previous post was at 01:51 PM ----------
Sallyty said:
I think you are right,Maybe phones have special circuitry to stop charging once the battery is full.
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You are right. Chargers and rechargeable batteries as a whole have been getting "more intelligent" over recent years.
No idea exactly how they do it, I know that a lot of batteries have chips in the that monitor things such as charge capacity and its "health". So I am assuming that they have some form of circuit switch to a higher resistance circuit when the battery is full, so that only a very tiny current can flow, keeping the battery full, without killing it.
solitarymonkey said:
No idea exactly how they do it, I know that a lot of batteries have chips in the that monitor things such as charge capacity and its "health". So I am assuming that they have some form of circuit switch to a higher resistance circuit when the battery is full, so that only a very tiny current can flow, keeping the battery full, without killing it.
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Almost always, the circuit is built into the charging device, not the battery. In the case of phone batteries, the phone is the charging device.
Link to more than any non battery engineer needs to know about lithium-ion batteries and charging.
DevonSloan said:
Almost always, the circuit is built into the charging device, not the battery. In the case of phone batteries, the phone is the charging device.
Link to more than any non battery engineer needs to know about lithium-ion batteries and charging.
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Thanks for the link/info. A while after I said all that, I started thinking that it can't be right.
The phone does the regulation, but I'm pretty they (the batteries) do have an integrated chip for health stuff.
Cheers again for the correction!
Hello,
I am getting the super fast charging only while the screen is locked. If I am using the device while it's charging, charging is not so fast.
It says super fast charging but it doesn't charge so fast.
Is it just my device or others facing the same issue?
enjoylife1788 said:
Hello,
I am getting the super fast charging only while the screen is locked. If I am using the device while it's charging, charging is not so fast.
It says super fast charging but it doesn't charge so fast.
Is it just my device or others facing the same issue?
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This is turned off by default. View attachment 5105611
Sent from my BlackBerry Bold 9900
I have turned it on. But what I am talking is that it works when the phone is not in use.
Same charger while phone is in use the charging is slow.
Same charger while the phone is sleep mode, the charging is super fast.
This is normal to avoid over heating of battery while in use.
You can't have the screen on for fast charging, you can listen to music with bt though while fast charging.
Having the screen on disrupts the charge curve (it defaults to slow charging) and it's best practice not to do this.
•Start charge at 30-40% then let charge to 60-80%
To get a 20% charge in that range only takes about 10 minutes! Li's love to be used like this; short charge/use cycles do not degrade them like NiCads.
There is a known slight memory effect with Li's so periodically cycle them through a wider charge range.
•Never charge cell below freezing, best if cell temp is 80 F to 95 F. At 80 F or below plating can occur which would permanently degrade the cell.
Charging above 70% degrades the battery faster, above 90% the charging slows and the higher cell voltage degrades it even faster.
•Avoid charging to 100% except if you need to or to periodically do a full charge cycle.
Heat and high cell voltage are the killers of Li cells. By avoiding charging beyond 80% and high temperatures you can increase the battery lifespan by hundreds even thousands of full charge cycles.
A 20% is not a full charge cycle; 6%-100% is.
Five 20% charges would be roughly the equivalent of a full charge cycle in power but far less is cell degradation.
•Avoid discharging below 20%, 30% is better.
After 20% there's much less usable energy; the phone uses a constant 5 volts. The phone's voltage converters trade off milliamps for voltage and use more milliamps for converting lower cell voltage.
Volts x Amps = watts.
The phone's voltage and wattage requirements are constants. So at lower cell voltage the phone draws more milliamps to supply these; the battery provides less watt hours than at higher battery voltage levels.
So take a 10 minute break every 2 hours or so and let it fast charge during the break.
i have a samsung galaxy s10 and somehow i notice that the charging speed is blazing fast from 89% to 100%. Then i monitor the peak voltage using AIDA64 and Accubattery. When my phone reached 100% it shows the voltage of 4.225 mV, i read that S10 supposed to charge upto 4.285 mV. After that i tried calibrating the battery by discharging it until my phone turned off by itself then charge to 100% while turned off and it shows 4.3 mV after i turned in on. What is happening to my phone and should i be worried about it?
In fact fast charging ramps down at about 80% then again around 90% in order to protect the battery. Excessive cold temperatures will cause fast charging not to engage.
You can't accurately measure Li charge level voltage or fast charge with the display on. If the display is on the power controller senses the excess power usage and ramps down fast charging. It will charge slowly at best.
To measure the voltage with Accubattery have the window open then turn off the display. When you turn it on you have about a second to see the voltage as it samples around every second or so.
It will immediately drop down then.
Depending on temperature, current draw and battery condition it may limit the top charge.
Fast charging to 100% stresses the battery needlessly as does constantly discharging below 20%. Li's prefer frequent midrange power cycling ie 40-72%. High cell voltage and temperature are their enemies. High discharge rates also can accelerate their degradation by driving up temperature.
Ideal minimum start charge temperature for fast charging is about 82F, minimum is 72F. If below about 55F fast charging will not engage for that charge cycle.
Cold charging Li's can cause Li plating which will permanently degrade the cell, a oid doing this!
NEVER attempt to charge an Li that is near freezing temperature
So thats the reason why my phone once dropped its percentage from 30% to 5% in an instant after having it in front of my car air conditioner. But is there a reason why my phone charged very fast from 89% to 100%?
It shouldn't drop that fast! Or charge faster near full charge. This is atypical performance.
You using the Samsung 25w brick and cable?
Erratic fast charging is a sign of a battery failure. Any swelling is a battery failure, replace asap.
Im using samsung 15w fast charging and btw i have replaced the battery around 5 months ago and i notice the fast charging speed only recently. Samsung didnt reset mt battery cycle when replacing the battery tho
Fixt1772 said:
Im using samsung 15w fast charging and btw i have replaced the battery around 5 months ago and i notice the fast charging speed only recently. Samsung didnt reset mt battery cycle when replacing the battery tho
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You need the 25 watt Samsung brick and cable.
15 watts will slow fast charging down if it works at all. If fast charging it should add about 2%@minute for 4100mAh battery in the 20-70% charging range.