Droid gets very hot when plugged into cigarette lighter in car

Discussion in 'Android Tech Support' started by Vulcan1600, Jun 19, 2010.

  1. Vulcan1600
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    Vulcan1600 DF Super Moderator Staff Member Premium Member

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    Today I was using my Droid in the Jeep while my wife and I traveled to visit some friends. When I left the house, I had 90% battery. I used the Google Maps and was using my official VZW cigarette lighter plug for the Droid, and about 75 miles later, I noticed my phone was very hot, and was down to 60%. How did that happen? So, I rebooted the phone, didn't turn Google Maps on at all, and when we reached our destination about 50 miles later, the phone was hot again, and battery was down to 30%.

    I've seen this before, but not as extreme as today. Anyone think I have a bad charger? Or is this a common thing with others too?
  2. zerosouls
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    zerosouls Soulless Droid Premium Member

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    That does sound very extreme, but I too have noticed the phone running somewhat hotter than normal. I realized this is probably because the phone is actually has the sun glaring on it, I'm not running the AC, and the cigarette lighter port is prolly a tad different volts than outlet and USB.

    I dunno, just a thought. I notice the same with heat, but nowhere near the issues you are having.

    Perhaps your charger has gone faulty?
  3. steve3624
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    steve3624 New Member

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    Hot battery with car charger

    My Incredible battery gets hotter then what I think is normal when it's being charged using the car charger. The house or charging through the computer USB port it's temp. feels normal. I am hoping the over heating won't damage the battery, but I suspect it will.
  4. zerosouls
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    zerosouls Soulless Droid Premium Member

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    I wasn't seeing mine go above 40c that much... if yours is the same this should be normal, especially for charging
  5. Vulcan1600
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    Vulcan1600 DF Super Moderator Staff Member Premium Member

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    The thing that concerns me is sure it gets hot, but why is it actually not charging but discharging when it's running hot like that? When on the home charger, I never have the issue.
  6. Mulciber
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    Mulciber New Member

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    Cigarette lighter not working?

    Sent from my Droid
  7. Trip
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    Trip New Member

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    For the last couple of weeks I have had the same issue Vulcan, sometimes my phone will get VERY hot and stop charging when its plugged into the car charger. I too have the Verizon car adapter. Mine will usually cool down and charge after I've done a battery pull and restart.

    I haven't found a "cause" yet, it just seems to be random, sometimes it happens, sometimes it doesn't.

    Sorry I cant be more help, but at least you know your not alone.
  8. mikeofmikes83
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    mikeofmikes83 New Member

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    As far as it not charging when your running navigation, I read somewhere else once that this is caused because the navigation app draws more power than is going through your charger. This doesn't explain the other issues though. IMO if you've had your phone for a while, start by replacing the battery. This could explain/solve both the heat issues as well as the short life. Before replacement (I don't think it will help much, but its worth a try) drain your battery completely; then recharge again and see if it clears it up even a little. If if clears up the issue even a little then you know you need to replace your battery. If not, then replace the battery anyway ;)

    More than likely its not your charger, there are hard failsafes that if too much throughput goes through, they trip, and the thing will just give out. I have heard horror stories about charges giving way, and melting the battery out of something...but thats very very rare.

    Also, if your rooted and running over clocked; I would adjust your CPU settings as far down as managable for you during charging. The phone naturally gets hot during charging, so adding more heat by over clocking your CPU is just adding fuel to the proverbial fire.
  9. rjax
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    rjax New Member

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  10. Vulcan1600
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    Vulcan1600 DF Super Moderator Staff Member Premium Member

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    Thanks to everyone and your replies. I agree that the phone will get hot because of the sun when in the dock in the window. I had it sitting in the console where the shifter knob is to change to the different 4WD options, so it wasn't getting direct sunlight after I turned off Google Maps. I have 2 cigarette lighters in the Jeep and swapped between the two. Trip, unfortunate to hear you're having similar problems, but thanks for the tip about pulling the battery and restarting the phone. I will try that next time.
  11. kristoff125
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    kristoff125 New Member

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    Is it the battery or the CPU that's getting hot?
  12. Vulcan1600
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    Vulcan1600 DF Super Moderator Staff Member Premium Member

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    I know from looking at SetCPU that's the temperature I go by. So, is that the CPU or battery temperature it's reading?
  13. kristoff125
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    kristoff125 New Member

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    Well, is it the battery that gets hot, or just to the right of the camera on the back?
  14. Johnly
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    Johnly Guest

    I read somewhere in here Vulcan rider that the droid can take 180 degrees fahrenheit and be fine=) I had my gps on and my droid in my lap on a sunny day, and when I picked up my black phone, it was friggin hot! It still worked great. I hear they are engineered to take a dashboard in death valley, all day! Did it smoke? Did it stink? I googled iphone burning smell and that was an issue with them? hehe
  15. foolydooly
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    foolydooly New Member

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    I been experimenting and when you're on 3G network intensively (downloading massive amounts at once, on Google Map doing GPS, etc) your phone will get hot if your phone is rooted. My brother's unrooted phone doesn't seem to have this problem, strangely enough.

    I think there should be some experiments... But for now, I think you should cut apps and cut down on power and should be fine. OverClock app (SetCPU) might be one of the guilty party.
  16. Vulcan1600
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    Vulcan1600 DF Super Moderator Staff Member Premium Member

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    Next time I travel, I think I will back down the O.C. and see if that makes a difference.
  17. foolydooly
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    foolydooly New Member

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    it is indeed strange; made me wonder "why is downloading taking so much power?" I only downloaded 5 apps at once, for jeez sake. It stayed toasty like hand-warmer for like 90 seconds during 90 degrees weather yesterday. Fun...

    people from my dealer (who rooted and helped me with OC and all) recommended not to go over 1000MHz (SetCPU), as it's bad for battery after that. Also, they told me to set CPU Governor as "ondemand", though that part I never got to ask.
  18. mikeofmikes83
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    mikeofmikes83 New Member

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    Side note: I have two profiles set on my setcpu config that anyone having this issue should definitely look into. I imagine that you all have your own configurations to these, but these are mine and they work great.

    First off, when the phone is charging I have it set to the stock speed of 550 with the min set as low as it will go. Charging it naturally generates more heat, so it seems only natural to configure it this way.

    Also, I have the temp set to 50c @ 550 mhz max w/ min as low as it will go.

    I agree with fooly in that your profs should be set to ondemand. I only switch mine to performance when I'm not configured under a profile and I need the boost. Kindda like nos in a car, you dont want to use it all the time.
  19. Superjay
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    Superjay New Member

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    Lithium ion polymer batteries shouldn't be discharged completely. They dont' like it. it will cause shorter usage times and shorter battery life. There is firmware to keep the battery from being overcharged, so you can leave it plugged in all day, if you want.

    The heat was most likely caused by the rapid discharge. If you had multiple apps running, causing the processor to run full speed, plus you were using nav, that means GPS, you were in the car, so you probably have the bluetooth on, possibly you forgot to turn wifi off... there is a very real possibility that the phone was discharging faster than the car charger was able to replenish power.
  20. FunN4Lo
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    FunN4Lo Member

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    I posted in another thread, on a 8 hour trip (one way) my Droid discharged died at 4 hours both ways on the VZW charger running GPS. No charge and it was also insanely hot. One way was in a windshield mount (thought is was the sun) the return was in the console (no sun) same results

    I just recently made another trip of 4 hours. This time I had a Braketron holder/charger that plugs directly into the cig lighter with a short USB to the Droid. It made it to the 4 hours (death point on the VZW charger). I was at 50% charge and only about 104 degrees F
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