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  1. #51  

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    Quote Originally Posted by cyraxx View Post
    I have a quick question. When I get my Captivate, I assume the battery will probably be ~50%. Would it be better to charge to full and then do all my fun set-up, or just use it straight away and drain the battery fully. If I should charge it, can I do my setup while it's charging?
    drain it , then do a full charge
  2. #52  
    know1's Avatar

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    Quote Originally Posted by Dramer77 View Post
    i dont get why everyone wants to turn the display all the way down, we have this big beautiful display that looks amazing , if u turn it down all the way i cant see it that well.. if you turn off the live wall papers and turn back your rate at which it checks for updates etc your will save alot more batt life.. i still have live wallpapers up, but all the push notifications are off.. i check when i open the app.. and i have screen brightness at like 3/4 maybe alittle higher.. and with mod to low usage i went about 32 hours since plugged in and was at about 12-14% left on the batt
    I don't turn it down just for battery usage. I turn it down because it hurts my eyes....especially in low light conditions.
  3. #53  

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    really? how close are u holding it to your face? i havent really used it in alot of low light conditions yet so i guess i cant see where your coming from... it does seem alot brighter in darker situations
  4. #54  

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    Quote Originally Posted by Dramer77 View Post
    drain it , then do a full charge
    DO NOT fully discharge a lithium ion battery. A full discharge of a lithium ion battery can actually irreversibly damage the battery. A lot of lithium ion batteries actually contain circuitry that prevent a complete discharge from happening as it's harmful to the battery.

    Lithium ion batteries aren't subject to the battery memory problems that the older nickel cadmium battery technology suffered from. The reduced charge capacity that you notice from lithium ion batteries aren't due to memory, but due to the chemical components of the battery slowly degrading due to discharge and no longer being able of holding a charge.

    The ideal storage state of a lithium ion battery is 40-60% charge as it reduces the breakdown of the battery chemical components over time. Keeping the battery at 100% charge all the time actually speeds up the chemical breakdown process.
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  5. #55  
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    Interesting.
  6. #56  

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    Quote Originally Posted by kris240376 View Post
    DO NOT fully discharge a lithium ion battery ...
    I think I had read this before about the iPhone battery. Lots of information about it on Wikipedia, basically saying exactly what you said.
  7. #57  

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    Quote Originally Posted by kris240376 View Post
    DO NOT fully discharge a lithium ion battery. A full discharge of a lithium ion battery can actually irreversibly damage the battery. A lot of lithium ion batteries actually contain circuitry that prevent a complete discharge from happening as it's harmful to the battery.

    Lithium ion batteries aren't subject to the battery memory problems that the older nickel cadmium battery technology suffered from. The reduced charge capacity that you notice from lithium ion batteries aren't due to memory, but due to the chemical components of the battery slowly degrading due to discharge and no longer being able of holding a charge.

    The ideal storage state of a lithium ion battery is 40-60% charge as it reduces the breakdown of the battery chemical components over time. Keeping the battery at 100% charge all the time actually speeds up the chemical breakdown process.
    I know Li-Ions don't have memory, but I thought we were fully draining the battery to calibrate the meter (i.e. we want the phone to accurately figure out the capacity of the battery) so that we don't have the phone thinking it's fully charged when it's not, leading to poor battery life. At least, that's what I understood it to be. I've only done the full drain once (right after I got it) and I don't plan on doing it again, as it should be "calibrated."

    I'm no battery expert, so maybe you can explain if I'm wrong.
  8. #58  

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    Although Apple and other manufacturers recommend running a device until it will no longer turn on in then do a full charge. This is in order to calibrate the electronics - so the phone knows what zero is and what full is.

    The phone will not really let the battery discharge 100% as it is monitoring the battery and will shut off at a certain point and then not turn on.

    I occasionally run the phone down until it shuts off (on purpose) - I have batteries that are still in good shape after many years - so I am comfortable with this procedure and I am convinced it helps to calibrate the battery/phone. I don't think it has to be done when you first get the phone, and I only do it once every few months.

    Apple has some good write ups on maximizing battery life on laptops and phones.
  9. #59  
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    So what battery widget do you all recommend?
  10. #60  

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    Quote Originally Posted by braj View Post
    So what battery widget do you all recommend?
    I'm using Battery Widget. But after the news today, I'm wondering why it needs access to my location, phone calls and some of the system tools (wifi state, prevent phone from sleeping). Seems suspicious.
  11. #61  

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    Battery Indicator is simple numeric bar in the notification area. That is what i use.
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  12. #62  
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    Thanks, I think I'll go with that, widgets are a nuisance for the most part IMO.
  13. #63  

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    Yesterday my battery was almost dead by 5 (like 16%). Today at 3:30 I'm sitting strong at 69%. Kinda weird.
  14. #64  

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    @wildkarrde21 You are correct in that a battery calibration can allow for the more accurate calculation of battery life. I'm not an expert on battery technology but let me try to share with you what I know about battery calibration.

    First, if battery calibrations were taking place the battery would never read 100% charge after it became worn. The whole point of a battery calibration is so the battery doesn't report the incorrect value of 100% after a full charge when it has a reduced capacity due to wear.

    Second, a battery calibration is something that has to be triggered by the user, it's not something the phone will just detect and automatically start doing. Usually, as in the case of laptop computers, whenever you trigger a battery calibration it's an operation that takes full control of the laptop and is typically knowingly and actively triggered by an option in the BIOS or a separate utility. The laptop cannot be used during this process and the process can last a few hours. During the battery calibration process the laptop will completely charge and then completely discharge the battery, measuring the amount of time that it takes for either the complete charge or discharge. The thought behind this is that a battery that is worn will take less time to completely charge/discharge than if the battery were brand new (I'm not sure how charge/discharge times relate to amounts of available charge so I'm not going to even try to lie and say that a 50% worn battery charges/discharges in half the time). At this point the battery circuitry would now know the battery condition and can then use that as a baseline for battery life estimations. For example, after a battery calibration, a battery that is 50% worn would only report as 50% when fully charged, not the confusing amount of 100%.

    Here's an example of what battery calibration is supposed to combat that you are all too familiar with:

    Some of you may have purchased your phone on a two year contract and will probably have it next year this time. Let's assume that you take moderately good care of your battery and wear it down by ~10%. What this means is that when you fully charge the battery it will only contain 90% of the charge that it could hold when it was brand new. Say this day next year you fully drain the battery and then charge it completely, what do you think the battery charge will read? You'd be absolutely correct in saying 100%. In fact, this measurement is correct! The battery technically IS at 100% charge! Is the reading any less accurate? No. Could you improve this reading? No. Again, the battery IS at 100% capacity, it's just that the battery is worn and is only capable of holding 90% of the charge it could when new. Would a reading of 90% be more meaningful? Absolutely. A battery calibration would provide the circuitry in the battery with the means necessary to arrive at the actual 90% reading.
  15. #65  

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    Last night, instead of charging my phone all night, I left it off the charger. It was at 25% when I went to bed. Got up this morning and it was at 24%.

    With the display off, this phone uses very little battery. I think every time I've checked my usage stats, the display takes up half to 75% of the battery used.

    Anyway, I just thought it was interesting.
  16. #66  

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    my phones been unplugged for 14 hours now and im only down to 55% battery with wifi connected the whole time. i havent really used my phone that much during that time though.
  17. #67  
  18. #68  

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    cachok what battery meter are You using? I looked for it but can't find it.
  19. #69  

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    Quote Originally Posted by cobra302 View Post
    cachok what battery meter are You using? I looked for it but can't find it.
    battery indicator pro. theres a free version available as well.

    free:


    pro:
  20. #70  

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    Hm, I'm not really sure whats with all the battery issues people have been reporting. Every day I've had this phone ('cept maybe the first day?) I've only had to charge it once each night. I fully charged it the first day before ever using it. I've been messing with the GPS, syncing contacts, downloading apps, watching videos... pretty much everything you could do, practically everyday, all day. I've let it run down all the way till the phone turns off each day.

    What I find pretty surprising, is that once it tells you that the batter is low and to plug it in, it will quite a bit longer than expected (like 2 hrs on less than 10%? could be wrong, haven't timed it).

    I also have gtalk running and email pushing. Twitter syncing 30min. Facebook sync 1 hr. Don't know how often google syncs. I don't make a lot of phone calls so, I don't know how that will affect stuff.

    I've been playing MP3s nonstop since 9:00am (now 1:00pm) and the battery is at 61%. Watched some video (short/youtube review type stuff).


    As far as the comments regarding the percentage of battery the display is using? Well, duh! That's what the largest part should be. If it was a piece of software, then yeah, I'd be concerned.
    Samsung Captivate (Stock)
  21. #71  
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    Well So far getting e-mails in a low signal area *my house*, with deleting over 100 emails every morning, bluetooth calls, texting and backing up my sms messages. Almost 7 hours later and I am still at 61% which is really good.. Yes the phone did not have a very good battery life but it continues to get better. And I listen to some music, videos, browsing as well as sending e-mails. Is equal to my bold in battery life so far!

    Cheers,
    Charlie
  22. #72  

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    Ok, this was on a 98% used battery (15h 14min)

    53% Display
    13% Voice (just 14min and 3 sec)
    8% Media Server (8hrs of mp3s)
    8% Stand by
    5% Idle
    3% Double Twist
    3% Android System
    2% GPS
    2% Android Live Wallpaper

    Kind of worrisome is that 14 minutes used 13% of the battery. That only equates to around 106 minutes of talk time, not the 350 listed on Samsung's website.
    Samsung Captivate (Stock)
  23. #73  

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    Quote Originally Posted by lillejord View Post
    Ok, this was on a 98% used battery (15h 14min)

    53% Display
    13% Voice (just 14min and 3 sec)
    8% Media Server (8hrs of mp3s)
    8% Stand by
    5% Idle
    3% Double Twist
    3% Android System
    2% GPS
    2% Android Live Wallpaper

    Kind of worrisome is that 14 minutes used 13% of the battery. That only equates to around 106 minutes of talk time, not the 350 listed on Samsung's website.
    Was that a single 14 minute call, or 28 thirty-second calls?

    I watched my battery drop only 2% points after a 57 minute call last night.
    I think the initial handshake with the network to place/receive calls uses more battery than the call itself.
    Joey
    Samsung Captivate
    All FroYo'd and stuff...
  24. #74  

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    One 9:21 call and one 4:42.
    Samsung Captivate (Stock)
  25. #75  
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    lillejord - that is insane. there is no way i would be able to do that with my phone, the battery simply drains much faster than that. could all of us with really poor battery performance have bad batteries? is there any way to tell if your battery is good or bad? i need to search and see what samsung says the battery life is supposed to be with usage and on standby.
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