Prolonging the battery life

vedhprakashyvedhprakashy Level 1
edited September 2020 in ROG Phone 2

This my first new phone I've ever gotten and I want to do anything I can to prolong the battery on-screen time and overall lifespan of it. I've already done most of my research on this topic myself and have applied what I learned, such as partial charging, avoiding hot places, planning to stop using fast/hyper-charging and a few more. I want to know what are you guys' take on this topic. Any tips are appreciated, it'll help both me and passing readers. Thank you in advance! ?



  • Also, is the battery care feature still active even if the phone is powered off?

  • Just use your phone like you normally would and just enjoy the device. Batteries will degrade no matter how much you take care of it. But is it really worth it to lose sleep over following all the different methods of trying to prolong your battery ? I mean you will probably get a new phone after 2 years.

    It is ok to use Hyper charging, it was designed that way. The reason you might not want to use it is because of the heat that is being produce when you charge from 20% to 80% for example.

    What you can do to reduce heat when charging is to try and keep the battery close to 80 or 90% just do regular top ups like 5 to 10% in a day. Remember one cycle is from 0 to 100. Not much heat will be produced if you do it this way.

    Don't charge while gaming on the device. You will get a lot more heat.

    You can follow the 20% to 80% method if you are comfortable with it. For me I keep the battery at 100% without overcharging it and I do regular top-ups to keep it close to at least 95% before I actually charge it back to 100% in the morning before leaving the house.

  • Use scheduled charging during overnight charging

  • But this article applies to li-ion batteries. Can the same explanation here be used on li-po batteries? The one that the ROG Phone 2 is using?

  • jetjosh92jetjosh92 Level 3
    edited February 2020

    The study was done 8 years ago and a lot has changed and like I said most of us change devices every 2 years or slightly over 2 years. Don't lose sleep over it. you will be fine for the next 2 years or slightly more and I am sure by then you would be changing to the next generation of ROG device or some other android device.

  • The study applies to lithium based batteries. The full name of li-po is a lithium-ion polymer battery. A li-po battery is a lithium-ion battery with a polymer as the electrolyte compared to a li-ion battery that uses a liquid electrolyte.

    Short answer: fundamentally yes.

    A lot changed in BMS. Not that much changed in the battery design and chemical composition. This study applies if we are talking about degredation caused by elevated SOC.

    I agree about the 2 year argument but TS asks how to prolong battery life, not if he should worry about battery life if he replaces his phone every 2 years.

    you're giving him advice that degrades the battery faster (by keeping the SOC 80+%) which is the opposite thing of what he wants.

  • jetjosh92jetjosh92 Level 3
    edited February 2020

    well my advice is quite simply common sense and not a study that was done 8 years ago. A lot has changed with hardware and software.

    A battery has a standard number of charging cycles. There is no way you can increase the number of cycles but only stretch it. Is it worth losing sleep or compromising your daily routine or your time with friends/family ? I don't think so.

    In this day and age, we depend heavily on our mobile devices so I am sure the team who has designed the ROG phone 2 has already accounted for all the different scenarios before picking the components. I am sure the people who made the battery has done numerous extreme test on the battery in their lab and already know how long the battery would last.

    It is not the first time I am using a mobile phone, and from experience and all the methods I have tried out over the years...trying to manage the battery usage does not bring much difference, especially if most of us are going to end up selling or trading in our devices for a newer model every two years on average.

    If a phone's battery is good for 2 years then it is good for 2 years and if for whatever reason you choose to continue using the device for another year or two just go to a repair store or ASUS service centre and replace the battery.

    and since you are the spare parts aliexpress guru I am sure you are able to find battery replacement on aliexpress for really a good price.

    And if you want to preach about managing the battery that much as an advice I doubt billions of the world population would even bother to follow it because most of us are probably guilty of over charging it over night which is worse.

    My advice is just to keep heat down.

    The phone is equipped with a battery of 6000 mAh why you would want any less and if it has hyper charge ? why not just use it ? why baby the device and make it a burden? why enslave yourself to technology when it is suppose to work for us instead ? I don't get why would anyone want to advice someone to change his daily routine just to manage a phone battery ? totally unrealistic, are you going to ask a heavy mobile gamer to stop gaming just to manage battery life ?

    Just don't lose sleep over it and enjoy gaming.

  • Battery's do have an expected number of charging cycles from 0-100. But studies have shown that the number of charging cycles can be in increased exponentially by using a smaller DOD in the lower SOC spectrum. This is why satalites can use lithium-ion batteries for decades.

    Phones are consumer devices which means that they are engineered to only last a couple of years. After that the battery fails. Because of the huge capacity of the ROG phone battery you could easily use a much smaller battery spectrum just like satalites/ electric cars do and increase the amount of usable years without getting hindered in your daily use.

    Yes you can find spare batteries on Ali expres for cheap but that doesn't mean that you have to buy them.

    I don't want to preach anything.. I just wanted to correct an advice that you gave the TS. No hard feelings..

    I agree overcharging is worse but that's not happening. The BMS is preventing overcharging. What is happening when leaving your phone hooked up to a charger at night is that the battery is spending a lot of time very high in its SOC which is what causes battery degredation. This is why the scheduled charging works like it does. It stops charging at 80% and finishes charging a relative short time before the set end time.

    Keeping heat down is good advice.

    I don't know how to answer to your last paragraph. I'm not asking anyone to do anything nor am I "babying" my device. All I am doing is giving TS the advice that he asks for. It's up to him if he wants to "baby" his device. He only wanted to know how to prolong battery life. And that is done by:

    1 reducing heat

    2 reducing SOC

    3 reducing DOD

    These are 3 reasons why non-consumer lithium ion batteries can be used for decades and consumer lithium-ion batteries fail after 2 years.

    I'm sorry that you felt like I was attacking your opinions but that is not my goal.

  • vedhprakashyvedhprakashy Level 1
    edited February 2020

    Relax guys, all I want is to extend my phone battery life for as long as possible. If it's just a few habit changes I don't mind doing it. I'm not babysitting it like you elaborated, I just want this phone to last long enough that I can use it for both gaming and for working outside of my pc. It's not like I'm skipping the gaming qualities of the phone, holding the device itself encourages me to play some games when I have some free time to spare. I want to keep this phone as my main device for as long as I can and not plan on buying another smartphone.

    Hold up, the phone's battery is replaceable???

  • I understand. imo the easiest and most effective thing to do is to set the scheduled charging end time to somewhere in the middle of the day. That way when you wake up in the morning the phone is charged up to 80%. You will lose 20% of the phones total capacity but you don't have to change your charging behaviour. For me the 6000mah battery is large enough to only use 80% of it and never run out of juice. But that might be different for you depending on usage. But that's just my opinion.

    If you have a heat gun and are not afraid to open up the phone then the battery is replaceable. But it's not like the good old days where you could open the back of the phone.

  • OPCOPC Level 4

    Exactly that I have done setting my scheduled charging to 8 AM and I wake up between 6:30 and 7:00. So it's never completely charged. And that's it.

  • jetjosh92jetjosh92 Level 3
    edited February 2020

    Well battery Nerds will always be battery nerds. Sorry but I don't agree with managing battery life that hard because it does not make much of a difference. You should go onto youtube and check out zollotech who did a test on batteries with 3 different iphones over the course of 3 years where the phones were charged to 100%

    I am giving an advice based on an average user perspective not from a battery nerd perspective. If you really want to continue preaching about batteries and if you think the study that was done 8 years ago is still very much relevant even after all the technological advancement and the improvement in manufacturing processes and techniques. Then I think you should really go on the forum of oppo and try to convince everyone who has bought an oppo reno ace that is capable of fast charging the device from 0 to 100% in just half an hour and tell them not to use the hyper charger but a low current and voltage charger and also tell them to keep their batteries at 80%

    My advice is simple. It is ok to charge to 100%, just don't over charge it. Make use of the battery care if you want to and just enjoy the device. Why go for 80% out of the 6000 mAh that is put into the device ? why even spend that kind of money if you are not going to make full use of it ? by the way most manufacturers now put a buffer on the phone batteries these days so you do not actually hit the limit.

    He is asking for advice, I just gave it but I don't need a battery nerd to come out of the woodwork and start throwing out numbers which is honestly not practical. Technology is meant to be a tool for us but not the other way round so why lose sleep over something that you are going to replace every 2 years or 3 years?

    And you are acting as though after 2 years the battery is still going to be holding the capacity 100%. Batteries degrade whether you like it or not.

  • jetjosh92jetjosh92 Level 3
    edited February 2020

    By the way I already tried so many methods of charging even from the early days where they said batteries has the memory effect. Managing the battery that hard is not practical for everyone because our usage varies. Your usage may not be practical for someone who is heavily dependent on his mobile device and who might easily burn through his battery in just one day. You going to tell this guy to manage his battery and keep it at 80% I don't think so. Please don't say power bank sometimes we even forget to charge our power bank or left it at home or something.

    I probably think you still don't get the point...

  • No point in arguing with a bully..

  • I am not even being a bully but it is just so annoying when you have battery nerds who just can't accept reality and what it is.

    This is the truth about batteries and this should answer a lot of questions if it is ok to charge your battery to a 100%

  • julienvd93julienvd93 Level 2
    edited February 2020

    Calling people names is bullying. There is no need for that and should not be allowed on this forum.

    You have different opinion and that is okay with me. But calling people names is childish and unnecessary.

    The 8 year study you are referring to is being maintained and gets regular updates. Last update of that study was mid 2019.

    Here is another recent overview:

    It was lastupdated 2018-04-10

    The difference between your research and my research is that yours is based on YouTube videos and mine on research papers from trust worthy sources.

    Please stop putting words in my mouth. I never said that he should keep his phone charged at 80% nor that he should carry a powerbank with him or even that it is not okay to charge a phone up to 100%. I'm done with you and this argument.

  • Dude no one is bullying I made my own recommendation based on a average user perspective which I am not going to repeat again. But you had to come at me like every battery nerd does with that same study from that same website.

    The updated recommendation is kinda almost the same as what I had been saying..random partial charges and keep the heat down. I even said you can follow the 20% to 80% if that works it is just 10% difference if the guy needs a little more juice so why are you coming at me for ?

    One more thing the study wasn't done on smart phones particularly, but on lithium based batteries in general. The video I showed you at least was done on a smart phone over a period of a few years. So does the 30% to 80% Soc really have a really significant difference on a phone battery ? no ? for a electric vehicle yes it which is also mentioned in the video since it is huge battery compared to a smart phone.

    Which brings me back to my point. is it worth managing a smart phone battery that much ? no ? an iphone still has about 86% battery capacity after a few years and that to me is pretty good. So that there shows you that it does not really matter. Which I still think even after giving this explanation, you are still not getting the point.

    Studies done on batteries aren't for a specific device and it is not suit everyone and our every day life. Unless you drive an EV...

    so why lose sleep over a smart phone when the manufacturers have already thought about it ?

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