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Thread: Downgrade to 902 - No app or data loss

  1. Junior Droid
    bikerjay's Avatar
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    Quote Originally Posted by josh1980 View Post
    Your USB ports on your computer are typically 400mA or so. A few motherboards have a special feature designed to charge devices at an "accelerated" rate, which I think was 600mA or 800mA. Overall, the computer seems to be the slowest charger out there.

    Overall, if you try to put a huge amount of current into the battery the protective circuit I talked about earlier will not allow you to charge it that fast. If it can't regulate the charging rate, it'll blow the fuse and your battery will miraculously stop working suddenly. Also, the faster you charge your battery the hotter it will get. I2R losses reign supreme. As the battery gets hotter the less current that will flow through it, and the less "complete" of a charge you get. As the battery cools you will be able to put a few more % power into the battery. For most people, you won't be able to tell me you are "missing" 5% of your battery. I don't think the indicator will tell you that you are only 95% charged and then slow go to 100% as the battery cools if left on the charger. It's a physical characteristic of the battery and the only "fix" is to not heat up your battery.

    I know the Motorola chargers put out 1300mA since I saw my Bionic pull that much from my car charger. Apparently Motorola thinks that 1300mA is still safe since that's what their product will do, right? An almost dead battery will have a much higher current draw than an almost full battery. As the battery nears full capacity the amount of time it takes to get the next 1% charged increases.

    Apple got in trouble for using these battery characteristics to virtually lie to customers. (I forget the numbers so I'll make some up) Apple claimed their iSomething had a 2000mAh battery and it would charge fully in an amazing 1 hour. The catch... If you let it charge for just one hour you'd only get 80% of a full charge. It actually took the typical 2 hours to get the full charge. I believe Apple lost a lawsuit over this because they were trying to claim a larger battery capacity than their competitors AND claim they could out-charge their competitors. The truth was their battery wasn't really superior to competitor products. The industry standard is to post your total battery capacity and the time to fully charge a dead battery. You can't market a battery as full capacity and then provide charging times for a partial charge. If you could then a company could easily say my Android device has a 2000mAh battery and can charge fully in 5 minutes even if you really only get 10% of a charge. I would have to market the battery as a 200mAh to claim the 5 minute charge. Who in their right mind would buy a device with a 200mAh battery? Some companies also provide numbers for 75-80% for slightly better comparison of the typical charging rate. Getting the last 20% charged on your battery usually takes about the same amount of time as getting the first 80%.

    My typical charger is a computer's USB port. It's slow, but typically I leave it plugged in for a long period of time(work, sleeping, etc). Also slow charges don't heat up your battery like the rapid/fast chargers do. Heat is the enemy for batteries. Leaving one in your car on a summer day can really do a number on them.
    I should clarify when I said i was charging with a computer psu. It was not a pc. Its an old AT power supply modified to work as a bench top laboratory unit. I just happened to have a usb pig tail and a 150 ohm resistor to go across the data pins. I was under the impression that a 150 ohm resistor across the data pins would be seen as take up to 1A by the phone of course 30A were available but the charging circuit should pull only 1A even if 30000A are available if its set for 1A.

    Any one know an easy way to current limit a 5V source and the correct logic on the data pins to get a 400ma charge.

    I am often away from electrical power and use a huge lithium polymer pack for charging for two weeks at a time. Right now i use the 14.4v pack with a dc to dc step down converter rated at 3A. I was hoping this phone would just take 1A leaving my step down converter cool and not wasting power as heat loss.
    Running rooted debloated ICS 247 Leak and lovin it
    Courtesy of SamuriHL's House Of Bionic Script
  2. Developer
    SamuriHL's Avatar
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    DroidForums.net Developer
    Can we move the insanely long power discussions out of this thread please...

    Sent from my Xoom using Tapatalk 2
  3. Master Droid
    welsalex's Avatar
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    Just downloaded everything and set it all up for future use. Went through that batch file, seeing what you've done, pretty sexy. Thanks for your hard work!
    Droid BIONIC
  4. Junior Droid
    bikerjay's Avatar
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    Yes a move of the power discussion to another thread about power rather, than your script would be ideal. Sorry about the mess. Not blaming the thread jack victim but your script works so well instead of pages of talk about problems I started to drift off topic.

    On topic again. I have not personally found or experienced any bugs with .246 or the version of HOB I used. I am glad i did it and went for the root since I am not left wanting for OTA. I have a feeling when ota comes I will just ignore it. When there is an update for ICS I want later down the road I can just get the hottest newest HOB and apply it that way with no data loss and the minimum required additional steps vs ota. Opening the Bat file in notepad It looks like an example that an instructor would use in a programming class.
    Running rooted debloated ICS 247 Leak and lovin it
    Courtesy of SamuriHL's House Of Bionic Script
  5. Developer
    SamuriHL's Avatar
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    Maybe an example of "OMG why the hell is this all done in a bat file?!"
  6. Senior Droid
    matjmonk's Avatar
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    Quote Originally Posted by SamuriHL View Post
    I always recommend the latest. Else I wouldn't have made it.

    "Well, yeah! (a nicer translation than "DoouuuHHH"!)

  7. Senior Droid
    Soocold's Avatar
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    Now .246

    ICS Droid Bionic
    .246 courtesy of HoB
  8. Developer
    SamuriHL's Avatar
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    DroidForums.net Developer
    Worth upgrading to 7.4 wasn't it? Congrats. Enjoy!
  9. Senior Droid
    Soocold's Avatar
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    No i used 6.4, i tried wifi, my 3g, my 4g and i never got a good DL.

    ICS Droid Bionic
    .246 courtesy of HoB
  10. Developer
    SamuriHL's Avatar
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    DroidForums.net Developer
    Pffffffffttttttttttt. POS phone. LOL!

    Everyone sit tight. I'm working on something that is going to royally piss me off shortly. And no, it ain't a good thing.
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