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Mannually re-calibrating battery and kernel question..

Discussion in 'Android Devices' started by lesawag, May 15, 2011.

  1. lesawag

    lesawag Android Enthusiast
    Thread Starter

    Hi all, just a quick question. Ive had to remove the kernel I was using with Kings r5. I was using netarchy toast 4.3.4 havs more sbc. Whenever I would turn my phone off to charge, and try to restart it, it would get stuck on the white htc screen. Is it safe to now go in manually and wipe my battery stats? Should I wait until I have a full charge? What about another Netarchy Kernel, maybe a havs less sbc? Thanks again. :)
     



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  2. ardchoille

    ardchoille Android Expert

    You should wait until the battery is full before you wipe battery stats. That way the phone is forced to grab info from the full battery instead of using existing stats on the phone that may tell the phone that the battery is less than full.

    I've heard mixed things about SBC kernels. I've heard that SBC kernels use what is known as trickle charging and trickle charging is bad for the batteries over a long period of time. This is why manufacturers don't use it as much anymore. On the plus side batteries are cheap these days so many people don't mind the battery having a shorter overall life because they can pick up a new one online.

    I'm running Fresh Evo 3.5.0.1, haven't flashed a kernel, I've calibrated my battery and I'm getting around 20 hours of life with moderate use. I was getting even better battery life out of my Samsung Vibrant.

    It is my opinion that if you calibrate the battery correctly you don't need to flash a kernel to get better battery life.
     
  3. ocnbrze

    ocnbrze DON'T PANIC!!!!!!!!!

    i think that sbc kernels are ok to use. yeah i agree over the long run it will ruin your battery, but batteries are cheap. i just switched over to sbc kernels and i have'nt seen any issues. i will just buy a new one once i see that my battery can't hold a charge.

    now as far as battery stats go, i would do what ard says wait for a full charge. you can try a less havs kernel. since kernels are different for everybody, you will have to find the right one for you and the only way is to try another kernel. the havs more kernel gave me a little bit better battery life then the havs less kernel. so i would say to go ahead and try it and see.
     
    ardchoille likes this.
  4. Xtremedays

    Xtremedays Android Expert

    I have heard the same things about SBC kernels and trickle charging but the time from for damage that would have a noticeable affect on battery life is beyond what most of us will keep our phones for(2-3 years) unless you fully charge your phone 3-4 times a day. In that case, I would suggest going with the non-SBC. I have had my phone rooted and running SBC kernels for 7 months now and not had an issue.

    I am running Kings GB R2 with Tiamat 4.0.1 SBC. With moderate use, I still have 70-75% after 10-12 hours off charge. I never got that kind of life out of the HTC Kernel or the CM Kernel. Min/Max speed set to 245/998 and Smartass governor.
     
    ardchoille likes this.
  5. ardchoille

    ardchoille Android Expert

    This is good information, I wasn't aware it took that long for trickle charging to affect the battery. If that is the case (2-3 years) then I'd say it's ok to use an SBC kernel because android phones will have come to EOL by that time anyway. Android is a very fast-moving platform and a device that is brand new today will be seriously outdated in just a couple of years.

    Carriers don't really want us keeping the same phone for 2 years anyway, they make more money if we upgrade sooner than that.
     
  6. Xtremedays

    Xtremedays Android Expert

    I am by no means a chemist or any kind of expert in this field. I have done some reading on it and though there is no concrete testing or info on it, this seems to be the majority opinion about the trickle charging. It is still a "use at your own risk" thing but I have not seen or heard of any common issues with the SBC process.
     
  7. lesawag

    lesawag Android Enthusiast
    Thread Starter

    Indeed very good info. Thanks ;). Yes I will be upgrading come November, love new technology. Every November, new phone. My hubby thinks I'm nuts ,but doesn't care. He doesn't have to worry about buying me a birthday present on the 16th and he gets my old phone. He is very interested in getting my evo in November. Lol....keeps everyone happy and I get a new phone.;) Now will i get evo 3d or nexus???
     
  8. ardchoille

    ardchoille Android Expert

    I'm in that exact situation, can't decide which to get.

    On one hand the Nexus phones are ideal for flashing but, on the other hand, the Evo 3d will likely have better specs and will have root sooner or later anyway.

    Decisions, decisions..
     
  9. ghxost

    ghxost Member

    Hmm, i'm on 4.3.4 less havs sbc on Kings unleashed R5, and I also get stuck on the white screen when restarting. Maybe its something with the 4.3.4...

    I did a battery calibration when it got to 100% charge, but had to restart my phone this morning for the gps fix, would not lock on at all. Since I had to restart before it drained all the way, do I need to do the calibration again, or just let it die, then charge it full again?

    When I restarted, got stuck on white screen for 15 mins, did a battery pull, and started again fine.

    Thinking about trying the non-beta kernel next time.
     
  10. lesawag

    lesawag Android Enthusiast
    Thread Starter

    Guess I'm not the only one getting white screen when re starting. My daughters was running the Same Rom and kernel as me, and she got the white screen after a battery pull. I tried pulling my battery 5 times yesterday, but it never booted. I had to flash the Rom. I was going to try the havs less sbc kernel next, but since you also had that restart issues, I will not. Lol Thanks for mentioning that. Maybe it is a 4.3.4. Thing.
     

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The HTC EVO 4G release date was June 2010. Features and Specs include a 4.3" inch screen, 8MP camera, 512GB RAM, Snapdragon S1 processor, and 1500mAh battery.

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