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Thread: Charging in Car doesn't provide enough juice?

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    funkpod's Avatar
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    #1

    Charging in Car doesn't provide enough juice?

    hey, i got a question.

    I went to lancaster today, w/ a 90% charge on my phone.

    (says Battery Left)

    I ran GPS to get there, and bluetooth, just in case someone called.

    I had it plugged into a Verizon Car Charger the entire time.

    I got to Lancaster, and it seemed like it was done charging. It said 100% (i think).

    HOWEVER, when i unplugged it, it DROPPED down to 65%.

    Have any of you had this problem?

    On the way back, I did everything the same, EXCEPT w/ no bluetooth.

    I started off w/ like, 90ish%, said it was full when I arrived home, and when I unplugged, it said like, 92%.
    That's okay by me. If I'm running gps and plugged into the car, i'd at LEAST like to even out my charge, ideally, I would gain battery power, even if it's slowly. I am using the phone a lot.

    But losing charge? Even when plugged in? I don't think that's good.

    1. Have any of you had this experience?
    2. What is the problem here? limitation in DC power? Limitation in USB charging? limitations in the charger?
    3. Would I experience the same thing if i plugged in my Wall charger, the AC charger, into a DC to AC converter and put that into the car?

    Thanks for the help, guys.
  2. Super Moderator
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    #2
    I've noticed the same thing since going to Froyo. Used GPS and where it used to charge in the car, even with the GPS going, now it barely breaks even. When they slowed the charging system down with Froyo, they seem to have opened the door for this problem.
  3. Master Droid
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    #3
    what seems to be the issue is that HTC in all its wisdom decided to turn the power off of the charger once the phone hits full. The phone then runs off of the battery until the power has been disconnected and reconnected. So once you hit 100% it runs off the battery. thats why the phone drops so fast after it is unplugged.

    HTC is determined to destroy this phone!!!

    Chris
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    #4
    I am not sure if I am having a similar problem, but I have noticed when I have my phone plugged in the car charger, the phone is reading it as it is plugged into the computer and it wont allow me to play any music. Anyone else having this problem? I dont know if it is because it is too much or too little power.
  5. Master Droid
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    #5
    GPS + car charging = heat. That shuts down charging until the temp drops and that often does not happen until GPS or charging is stopped for a period of time. A well documented condition across many threads. If you have any positive charge gain after more than a few hours using GPS you are doing well
    Deep Thought #1
    How does Verizon sell phones at their own stores? Any phone they sell, can be found for 50% to 75% less on Amazon, or at Best Buy. Does Verizon operate their stores on a "there is a sucker born every minute" business model?
    Deep Thought #2
    Is Verizon's customer service philosophy: frustrate, aggravate, and exasperate, these annoying interruptions to our day, will eventually go away?
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    funkpod's Avatar
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    #6
    hmm.... so you're saying the problem is software, not hardware? doh. i was hoping to be able to just throw money at it and have the problem solved. now i have to wait for an update...

    so, based off of what you said... is the Bump charging fixed? do you still have to bump charge your phones to receive a full charge? if i just charge my phone w/ it on, are you saying that if i get a full charge at 4am, then, from 4am to 6am it will be runnign on battery power?

    will the problem be fixed if i am in the car, it reaches "full", then unplug my charger and replug it again?
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    #7
    I've seen similar trouble with a Droid2.

    It would appear the OS treats a car charger like a USB port, not an AC adapter. Don't know how it does this, or whether it's correct to do so. But on a Droid2 there's a little white LED next to the microUSB port that only comes on when plugged into an AC adapter. No 12v adapters I've tried have lit this light. Consequently the phone does not charge itself anywhere near as quickly as with a wall charger.
  8. Master Droid
    techguru's Avatar
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    #8
    Most 12v USB adapters are 500 mw or less. This is just barely enough to charge a D1, Incredible, or DX when turned on, let alone using GPS and playing music. I just picked up a Scoche 1amp charger at Target this weekend, and for the first time I can charge at the same time as actually using the device. Note: You may still get teh overheating problem mentioned by FunN4Lo mentioned above. Difficult to do anything about that in the summer. I have seen people drill air holes in their mounts and try to mount the device in front of the air conditioner vent, but not sure of the success of these strategies.

    Alan
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    #9
    I have D1 stock, mounted with proclip on airvent. While running GPS, Trapster and pandora, it still chrges up to full. Sounds like the heat theory is plausable, but since I have a vent mount it stays cool.
  10. Senior Droid
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    #10
    Quote Originally Posted by techguru View Post
    Most 12v USB adapters are 500 mw or less.
    Yes, that's true for some adapters. But not the ones I've tried. Both are 1A and 1.5A respectively. They've got a USB port on them. I'm using a USB to micro USB cable.

    I'm wondering if there's a pinout difference between a micro USB cable and a wall adapter? I've run into trouble with blackberry phones refusing to use certain cables for charging. I'm wondering if that's the same situation with the D2. Could be, but I'd like to know more facts about it.
    Last edited by wkearney99; 09-07-2010 at 08:24 AM.
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