Hi.
Some background info:
Alright, I've been away over the weekend to a friends place where there is no power at all and successfully managed to keep my phone alive during the whole weekend but I did notice some weird stuff with the phone not reading the battery stats as it should when it gets cold.
After each time I got inside again after being out in around -20 degrees Celsius I noticed how my battery percentage gets really low, but then it doesn't get any lower at all for hours. If I reboot, it can jump back up to the battery percentage it should show; and I can actually repeat doing this how many times I want - I just make the phone get really cold and then make it warm again! So it is not a random bug that just happens once in a while, it happens all the time. You know, it's a bit cold here in Sweden from time to time
Anyway, my battery stats in settings look like a roller coaster or something and I have no idea why the phone seems to not being able to read the battery stats properly when it is cold.
So, the question is: anyone here who can bring some clarity to this thing?
Yes - I have tried to search for it on google but didn't find anything that's interesting, only some stuff that has absolutely nothing to do with what I wanted to know.
Thanks in advance, hopefully someone could explain this... For me, it is just really weird. And hopefully you guys can understand what I'm trying to say, I'm a bit tired
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^ that's what I mean
(random fact: 8% battery left and it has been on for 3 days, 15 hours and 45 minutes and I'm actually going to charge it right about now)
Well, it's known science related to chemistry/physics that running at colder temperatures slows down the heat dissipation. It doesn't mean exactly like going to extremes like 0C will do the trick, as there are thresholds for between hot and cold temps that mark the optimal battery operating temp.
Doing things that cause high heat dissipation, such as running navigation, is usually extraneously involved with battery drain (happens at the same time, but might not necessarily cause the other).
IE, the hotter the temperature of the battery is, the more it will drain.
Thus, if you are in colder weather outside it obviously makes sense that the weather is affecting your battery from generating as much heat. I don't think you are in freezing temps either, so it's more like optimal range temperature-wise.
There are a few articles written from a science perspective on it:
http://chemistry.about.com/od/howthingsworkfaqs/f/coldbattery.htm
Why Do Batteries Discharge More Quickly in Cold Weather?
By Anne Marie Helmenstine, Ph.D., About.com Guide
One solution to this problem is to make certain batteries are warm just prior to use. Preheating batteries is not unusual for certain situations. If the battery is already warm and insulated, it may make sense to use the battery's own power to operate a heating coil. It is reasonable to have batteries warm for use, but the discharge curve for most batteries is more dependent on battery design and chemistry than on temperature. This means that if the current drawn by the equipment is low in relation to the power rating of the cell, then the effect of temperature may be negligible.
On the other hand, when a battery is not in use, it will slowly lose its charge as a result of leakage between the terminals. This chemical reaction is also temperature dependent, so unused batteries will lose their charge more slowly at cooler temperatures than at warmer temperatures. For example, certain rechargeable batteries may go flat in approximately two weeks at normal room temperature, but may last more than twice as long if refrigerated.
Click to expand...
Click to collapse
http://www.wisegeek.com/do-batteries-really-last-longer-if-they-are-stored-in-the-refrigerator.htm
Household alkaline batteries generate their electrical power through a chemical reaction. Each battery contains alternating layers of two different metals and an alkaline liquid which acts as an electrolyte. When an electrical circuit is complete, free electrons flow out of the negative poles of the batteries, move through the device, and return to the batteries through the positive poles. This process continues until the electrolyte fluid can no longer keep the free electrons flowing. As long as unused batteries are kept in a cool, dry space, they could remain usable for five years or more. The electrolyte fluid retains an estimated 90% of its power as long as the batteries are not allowed to overheat or become unsealed.
This is where the refrigeration issue enters the picture. A household refrigerator typically holds food at 40° Fahrenheit (approximately 10° Celsius) or lower, and the atmosphere inside a refrigerator is very low in humidity. In other words, a refrigerator appears to be the ideal environment for the storage of alkaline batteries. All batteries will eventually lose their charge due to a slow drain of their electrolytes' power. The lower the ambient temperature, however, the slower this power drain could be. According to the results of several scientific tests, batteries stored at refrigerator temperatures do indeed last longer than batteries stored at higher temperatures, but on average the difference is only a few percentage points. Alkaline batteries stored in a refrigerator may retain 93% of their power after five years, compared to 90% for non-refrigerated batteries stored in cool, dry areas.
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And now there's only one question left; why doesn't my phone read the battery stats properly when it is cold?
kaijura: thanks
Related
So I got a 3500mAh Sedio battery a week ago, and so far its been great. With heavy usage it lasts atleast 2 days. But a weird thing happened to me last night...
I set my alarm, and noticed I had 30% battery left. I figured that was more than enough to last through the night, so I didn't plug it in. But in the morning, my phone was dead!
Check out the log:
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This graph is showing a 70% drain over 40 hours, which is normal. But what happened between ~2am and ~7am!?!? (Very right of the graph)
The only thing I've done differently was turn the brightness down to very minimum so I could use it in the dark without burning out my eyes. That doesn't seem a likely cause for such a sharp battery drain though. I also made sure that all tasks were closed before sleeping, as I do every night.
Anyone have any thoughts about why this occurred? I certainly hope the battery isn't going bad already!
In my experience of lithium-ion batteries, the voltage drop tends to be non-linear, and can be very difficult to estimate. Because you are using a higher capacity battery than the standard HTC 1300mAh, it doesn't estimate your battery life as accurately. Mainly (I would guess) because the software is profiled to base it on typical voltage curves of the 1300mAh, and not your beastly 3500mAh. Typically with lithium-ion, you'll see a steady linear drop in voltage until some cutoff point, where it then takes an exponential curve down to zero. My guess is that particular voltage is somewhere when your phone thinks it's got about 25% life left. I don't think there is anything wrong with your battery or phone, I would just assume that your phone tends to over estimate slightly.
Another thing to consider is what the temperature at the time was. Temperature tends to affect the output voltage and then the % battery life as a result. If it was warm or cold, this would also skew the values of your battery life. Usually within typical room temperatures you would see no changes, but I don't know, maybe you live in an igloo!
Hope that helps. On that note, how do you like the 3500mAh? 40hrs sounds like a ton of extra juice! It's not too bulky or anything?
Thank you for your reply. What you say does make sense, but its really weird because I've been discharging it to 5% every time now (conditioning it 6 times, this is my 5th time). All the other times it was a steady drop from 30% to 5%, nothing fast like this, at least as far as I can remember. I'll certainly keep an eye on it though. It wasn't fun to wake up and realize I was late for work, haha.
The battery is fantastic. I use my phone all the time, mainly for games and surfing, plus tons of modding. Thought the day I'll receive a handful of texts, use maps once in awhile, and have bluetooth music going for 2 hours a day. On my 1300 battery, I had everything optimized for maximum battery life, and it'd typically be 20% at end of work day.
With this 3500 monster though, it only goes down to 70% at the end of the day. Its super nice. The battery makes the phone larger, sure. I thought it looked really ugly while I was researching the battery, but once I received it its no problem! Not an eye sore; the phone looks pretty much like it was made like that. I don't even notice it, both aesthetically and form wise. Fits in my hand just as well as it did before, plus the larger door protects the camera lens. Win win all around imo!
That is a proven fact of science. Water can exist as a solid (frozen) and also as a liquid at 32° F(0°C). No tricks. No "saltwater". No 31.9999999999....° or 32.0000000001....°
It is a fact of nature. Also, water and steam can both exist at 212°F (100°C)
Now discuss amongst yourselves.
Soquid
Sent from my SCH-I535
Important stuff!
How is this possible???????
Sent from my XT912 using xda app-developers app
Hmong_Xiong said:
Soquid
Sent from my SCH-I535
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No, not soquid.
But 31.99999999.... is equal to 32
Can water be broken down to a non-existent state?
Dry ice will evaporate at any temperature. But dry ice itself sits at -109F.
Water actually starts freezing at around 4 centigrade. Your argument is invalid.
Sent from my Gekko phone.
jaszek said:
Water actually starts freezing at around 4 centigrade. Your argument is invalid.
Sent from my Gekko phone.
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4°C is when water is at its highest density. The density starts to go down below that temp but it is still a liquid. Since 4° is its highest density, then it is also less dense at temperature above 4°C. So your statement is invalid unless you think that water above 4° is ice also.
Thats OK said:
Can water be broken down to a non-existent state?
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It can be broken down into the pure elements of hydrogen and oxygen. At that point it would no longer be water thus the water would be non-existent.
85gallon said:
It can be broken down into the pure elements of hydrogen and oxygen. At that point it would no longer be water thus the water would be non-existent.
Click to expand...
Click to collapse
Lets whip up some fuel cells.
Could we actually build one?
Coming from the ground up
Fuel cells are cool. They create energy and the only byproduct is pure water. The only problem is that hydrogen does not exist in pure form in nature. It is always part of a compound. And the energy required to break down the compound to get the pure hydrogen for the fuel cell is more than the fuel cell would produce.
Sent from my Kindle Fire running CM10 Jelly Bean
85gallon said:
Fuel cells are cool. They create energy and the only byproduct is pure water. The only problem is that hydrogen does not exist in pure form in nature. It is always part of a compound. And the energy required to break down the compound to get the pure hydrogen for the fuel cell is more than the fuel cell would produce.
Sent from my Kindle Fire running CM10 Jelly Bean
Click to expand...
Click to collapse
Just realised how the fuel scoop in Elite must have worked.
The thing is, that water's specific heat capacity is 4.2J/kgK as you know. That means 1kg of water takes 4.2J of heat energy to rise its temperature by 1K or 1 C. This happens because the heat energy taken increases the kinetic energy of the molecules and the temperature is the average internal kinetic energy. When water, in the state of liquid, is cooled below 32 F or 0 C(it's freezing point), the kinetic energy should decrease as the heat energy is being given out. But, instead, the potential energy starts decreasing due to which the molecules come closer and start holding each other tightly. When the process is complete, about 336J of heat energy is given out and water becomes ice at 32 F. Since there is a change in potential energy instead of the kinetic energy, the temperature remains unchanged. That explains why water's a solid and liquid at 32 F. The only difference is that the liquid state has an additional heat energy of 336J (latent heat of fusion). Same thing happens when water in liquid state is boiled at 212F, the difference being that when it gets converted to steam at 212F, it has an additional 2268J of heat energy (latent heat of vaporisation).
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I know you've seen this done in chemistry.
We'd have to do it in a larger separator without blowing up the surrounding area.
We wouldn't want another booboo like the PEPCON rocket fuel plant explosion.
Thats OK said:
I know you've seen this done in chemistry.
We'd have to do it in a larger separator without blowing up the surrounding area.
We wouldn't want another booboo like the PEPCON rocket fuel plant explosion.
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And the energy you'd get back from recombining the hydrogen and oxygen would be less than the battery you used, which is why renewable energy sources need to be used to seperate the gasses.
One thing this thread has shown is the lunacy of the Fahrenheit scale.
xaccers said:
One thing this thread has shown is the lunacy of the Fahrenheit scale.
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Yeah, and you're ugly.
Easier than it sounds, harder than it looks.
anasdcool71 said:
The thing is, that water's specific heat capacity is 4.2J/kgK as you know. That means 1kg of water takes 4.2J of heat energy to rise its temperature by 1K or 1 C. This happens because the heat energy taken increases the kinetic energy of the molecules and the temperature is the average internal kinetic energy. When water, in the state of liquid, is cooled below 32 F or 0 C(it's freezing point), the kinetic energy should decrease as the heat energy is being given out. But, instead, the potential energy starts decreasing due to which the molecules come closer and start holding each other tightly. When the process is complete, about 336J of heat energy is given out and water becomes ice at 32 F. Since there is a change in potential energy instead of the kinetic energy, the temperature remains unchanged. That explains why water's a solid and liquid at 32 F. The only difference is that the liquid state has an additional heat energy of 336J (latent heat of fusion). Same thing happens when water in liquid state is boiled at 212F, the difference being that when it gets converted to steam at 212F, it has an additional 2268J of heat energy (latent heat of vaporisation).
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DING DING DING. We have a winner!!! Here in the states we were taught in calories instead of joules.
Normally it takes 1 calorie to change the temperature of 1 gram of water 1 degree Celsius whether cooling or heating. When water reaches 32°F(0°C) it reaches an invisible wall built by nature in the transition into ice. An additional 80 calories/gram of water needs to be removed before the transition to ice can be made. Although that much heat/energy is removed the ice is still at exactly 32°F.
A similar wall exists for the transition of water into steam. Except once the water reaches 212°F(100°C), an additional 540 calories/gram of water needs to be added to force it to change its state to steam. Yet the steam at that point is still 212°.
TheSkinnyDrummer said:
Yeah, and you're ugly.
Easier than it sounds, harder than it looks.
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Well that's a given, but unlike Fahrenheit I make sense
Here's a question; why does hot water freeze quicker than cold water?
whenever i connect my 0% battery z1 to power supply, it behaves strangly sometimes, like no red illumination, which indicate no charging(press power button nothing shows on screen). or, red illumination but u press the power button to check how much the battery has been charged & screen remains black. disconnecting phone to power supply & reconnecting works sometimes only. it is still new, bought during christmas, but it freaks me out now.
Try to do a factory reset. If that didn't work take it to Sony service center while it's still under warranty.
Regards,
~J2C
Mine too I think!
Sent from my C6903 using Tapatalk
Why would u even let your phone to be at 0% battery?!
I never let mine to go inder 14% coz it's very bad for the battery to be totally dischaged!
nikola1970 said:
Why would u even let your phone to be at 0% battery?!
I never let mine to go inder 14% coz it's very bad for the battery to be totally dischaged!
Click to expand...
Click to collapse
It's better to get it to 0% once in a mother (or less/more).
Are you using the charger and USB cable that was provided with Z1? I recently discovered that not all charging adapters and cables are made equal, and some cables don't provide enough current to charge certain devices.
Just2Cause said:
It's better to get it to 0% once in a mother (or less/more).
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This is not true, you will actually decrease the life of your battery by doing this. The XZ1 uses a Li-on battery chemistry.
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Li-on batteries are well known for being problematic at low levels of charge (can't recharge, decrease in life, etc).
Lithium ion chemistry prefers partial discharge to deep discharge, so it's best to avoid taking the battery all the way down to zero. Since lithium-ion chemistry does not have a "memory", you do not harm the battery pack with a partial discharge. If the voltage of a lithium-ion cell drops below a certain level, it's ruined.
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ref: http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery2.htm
A partial discharge reduces stress and prolongs battery life. Elevated temperature and high currents also affect cycle life.
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ref: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Hopefully, the power management circuitry will prevent anyone from reaching the "ruined" voltage levels, but I've already seen quite a few people posting about phones which aren't turning back on after running them down to 0%. Both of those links provide good information on preserving Li-on battery life.
If you like your phone, don't discharge below 10% and let the phone nurse on a charger often.
@xasbo You actually get the battery to 0% once a month (more/less) to keep the battery calibrated as flashing ROMs changes battery calibration.
All my previous phones (Xperia play, Xperia go, Xperia Z, and now Z1) went to 0% and then 100% more than once with no problem at all. (Z1 only once so far)
Just2Cause said:
@xasbo You actually get the battery to 0% once a month (more/less) to keep the battery calibrated as flashing ROMs changes battery calibration.
All my previous phones (Xperia play, Xperia go, Xperia Z, and now Z1) went to 0% and then 100% more than once with no problem at all. (Z1 only once so far)
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You can do what you like, but you will not escape the physical chemistry of the battery. Full discharges are bad for the health of the battery.
thanks guys~
well does this have something to do with made in china? samsungs have no such problems. my old phone, xperia sola has no such problem too
Hate Android Lag said:
well does this have something to do with made in china? samsungs have no such problems. my old phone, xperia sola has no such problem too
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Doubt it. Maybe a design problem. Either way, you shouldn't discharge that battery that far.
Hi,
I want to understand battery performance of Moto G5s plus. I am seeing that battery life of my phone is very poor. It goes down to 70% from 100% in an hour with just usage of YouTube.
When i received my cell phone i haven't full charge it's battery before starting it. I have full charged my battery when it was 40% remaining. While the official manual says that, we need to full charge it before starting our cell phone.
Does Moto G5s plus need full charge of battery before start (when we are starting our phone just after unboxing)?
Anyone have similar issue?
How's battery life holding for others?
Thanks,
Abhishek
abhishek17 said:
Hi,
I want to understand battery performance of Moto G5s plus. I am seeing that battery life of my phone is very poor. It goes down to 70% from 100% in an hour with just usage of YouTube.
When i received my cell phone i haven't full charge it's battery before starting it. I have full charged my battery when it was 40% remaining. While the official manual says that, we need to full charge it before starting our cell phone.
Does Moto G5s plus need full charge of battery before start (when we are starting our phone just after unboxing)?
Anyone have similar issue?
How's battery life holding for others?
Thanks,
Abhishek
Click to expand...
Click to collapse
My phone's battery drained 12% for three and a half hour screen use (browsing, messenger etc. and Mortal Kombat - only 20 mins, though). The screen is almost at the least brightness.
I too faced q similar issue as yours. Turned out it was because of some app Battery HD or DNS something app (used to block ads) or maybe some other third-party app. I uninstalled all those and the performance improved significantly.
Give it a try.
I got 11 hours from 100% with 5 hours screen-on time
tarun0 said:
My phone's battery drained 12% for three and a half hour screen use (browsing, messenger etc. and Mortal Kombat - only 20 mins, though). The screen is almost at the least brightness.
I too faced q similar issue as yours. Turned out it was because of some app Battery HD or DNS something app (used to block ads) or maybe some other third-party app. I uninstalled all those and the performance improved significantly.
Give it a try.
Click to expand...
Click to collapse
Did you full charge your phone before you switch it ON for the first time?
I would check for a rogue app draining the battery. I've had the phone for a week now and the shortest SOT I've had was 3hrs. That was with streaming music through Bluetooth while driving for 13hrs. My average ok normal day has been 5hrs with 35 percent left on battery.
No issues with battery life here. I didn't fully charge my device when I first unboxed it. Matter of fact, I didn't charge it until that night.
I've had this device since Saturday, so it's hard to say exactly how well battery life is exactly, but based on what I've seen so far...it's pretty damn good. I took it off the charger 5 hours ago and it currently says I have 2 days left. I haven't used it much today as I'm at work, but I have a feeling something isn't right with your setup [emoji848]
Being nobody else has posted any screenshots, figured I'd show mine [emoji6]
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abhishek17 said:
Did you full charge your phone before you switch it ON for the first time?
Click to expand...
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No. Instead, I used it until the battery discharged to 0. Then I charged it to 100 and used it till the battery drained to 0. Did the same like thrice. I really doubt such a thing had any effect on battery, though.
tarun0 said:
No. Instead, I used it until the battery discharged to 0. Then I charged it to 100 and used it till the battery drained to 0. Did the same like thrice. I really doubt such a thing had any effect on battery, though.
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Did you try holding it in your left hand, hopping on your right foot, waving it around and around your head, shouting "go battery go go charge"? I reckon it's got as much chance of making a difference as anything else. It's a lithium ion battery - just charge it when you think that you're going to need it to last longer than it would if you didn't charge it, and make sure you fully charge it if you intend leaving it unused for months. Anything else is cargo cult nonsense.
Webern said:
Did you try holding it in your left hand, hopping on your right foot, waving it around and around your head, shouting "go battery go go charge"? I reckon it's got as much chance of making a difference as anything else. It's a lithium ion battery - just charge it when you think that you're going to need it to last longer than it would if you didn't charge it, and make sure you fully charge it if you intend leaving it unused for months. Anything else is cargo cult nonsense.
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Haha! I only replied to what the OP asked. BTW my intention to drain the battery to 0 before charging was to measure the time it takes to get fully charged from 0.
Webern said:
Did you try holding it in your left hand, hopping on your right foot, waving it around and around your head, shouting "go battery go go charge"?.
Click to expand...
Click to collapse
I had to lol at that. Moved to the Moto from a seriously battery impaired Nexus 6P and that was about the only thing I didn't try.
"Go battery go go charge" is now our household meme for "I have to charge my phone". Thank you.
tarun0 said:
No. Instead, I used it until the battery discharged to 0. Then I charged it to 100 and used it till the battery drained to 0. Did the same like thrice. I really doubt such a thing had any effect on battery, though.
Click to expand...
Click to collapse
Yes, you are right. Old batteries needed to full charge before switching it ON for the first. What i find surprising is that Moto is saying the same for new generation batteries and printing it in Manual.
I finally got a fresh new g5s plus and so far I can't complain about the battery life. On my second charge I got 2 days of battery with 8 and a half hour of screen on, but only a few calls, and almost always wifi. The next days I'm using the phone lot heavier with lot of GPS and calls, so we'll see then how it's going but so far I'm very satisfied.
By the way I haven't fully charged the phone out of the box but I've waited untill it was almost fischarged
I purchased this about a month ago. I have been reading a lot of posts out here about people having fairly low battery life. So I had installed Accubattery to see if the discharge is abnormal. I checked today and it seems like Accubattery is claiming that my battery is only at 50~% health. Now I am unsure that if this is because it is a genuine fault or because this phone is supposed to have 2 2500mAh batteries and Accubattery is detecting only one of them. Any idea about this?
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What are your SOT vs battery percent used?
History tab...
blackhawk said:
What are your SOT vs battery percent used?
History tab...
Click to expand...
Click to collapse
I've had my 11T Pro for roughly two weeks and I have the same issue.
It doesn't read charging speed correctly which confuses it's health calculations.
I'm sure your phone is fine.
scaryterry2903 said:
View attachment 5539025
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Click to collapse
Those SOT numbers seem erratic. Some reasonable, others look impossible.
When you're using the browser not watching vids the usage should low.
As the previous poster mentioned it may just not have good sensing for battery usage.
Accubattery is only as good as the data it's getting. Even then it can screw up. I don't understand what's going on there.
Rather strange. I don't have that phone so I don't know what it's nominal run time should be. If it's running cool and you can get 8-10 hours SOT you're probably in the ball park.
blackhawk said:
Those SOT numbers seem erratic. Some reasonable, others look impossible.
When you're using the browser not watching vids the usage should low.
As the previous poster mentioned it may just not have good sensing for battery usage.
Accubattery is only as good as the data it's getting. Even then it can screw up. I don't understand what's going on there.
Rather strange. I don't have that phone so I don't know what it's nominal run time should be. If it's running cool and you can get 8-10 hours SOT you're probably in the ball park.
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Click to collapse
Hmmm, okay. I'll continue observing my phone's behaviour then. I do get over 8-10 hours SOT on medium usage. Additionally, I read from other threads that the 120W charger isn't charging the phone fully and it makes sense to charge with a lower power charger. So I will try that as well. Will keep this thread updated if I see any improvements.
Accubattery doesn't work well with dual battery setup, that's why it's showing Battery health at 47%.
Set design capacity to 2500.
11T PRO has 2x 2500mah battery for ultra fast charging. Set the design capacity to 2500 and you will be fine.
Pichulec said:
11T PRO has 2x 2500mah battery for ultra fast charging. Set the design capacity to 2500 and you will be fine.
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This presents a potential problem in the future as one battery can degrade and fail independently of the other. You really need to be able to monitoring both.
If the manufacturer designed it properly each battery should have its own power controller in a perfect world. Not sure if this is so on any of the dual battery phones...
blackhawk said:
This presents a potential problem in the future as one battery can degrade and fail independently of the other. You really need to be able to monitoring both.
If the manufacturer designed it properly each battery should have its own power controller in a perfect world. Not sure if this is so on any of the dual battery phones...
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Click to collapse
I reached out to Accubattery support team and this was their reply.
Link from the email