Breaking even with car charger?

Discussion in 'HTC ThunderBolt' started by recDNA, Jul 5, 2011.

  1. recDNA

    recDNA Member

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    Whenever I get in my car I connect to charger and put tbolt on vent holder. If I keep the screen on all the charger does is break even!! If I shut off screen it might go from 75% to 80% in an hour. Is that typical? It charges fast enough on ac but terrible in car.
     
  2. johnd09

    johnd09 Member

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    Your charger may be too small, mine charges faster on my car charger than with the ac charger.

    Sent from my Thunderbolt!!
     
  3. Laur3nNewm4n

    Laur3nNewm4n Member

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    I noticed this when I would try to charge my Droid 1 with the car charger as well. I never looked to see if the car and AC charger were putting out the same amount of juice to the phone or not. When I charge it with my computer, it's a little slower than AC, but not as slow as the car charger.
     
  4. recDNA

    recDNA Member

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    What is too small? Isnt it direct 12v dc?
     
  5. MrLethalWeapon

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    USB operates at 5 volts. The charger converts the vehicle's 12 volts down to 5 volts. A voltage higher than 5 would destroy your phone.

    The stock AC charger puts out 5 volts at 1 amp of current. You need a car charger that puts out 1 amp of current or more.
     
  6. recDNA

    recDNA Member

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    Is there a way to measure current of charger with a multimeter? Would it be the top and bottom of the plug?
     
  7. Fruity Pebbles

    Fruity Pebbles New Member

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    You pretty much have to use the genuine HTC charger to get 1 amp (fast) charging with the Thunderbolt. On non-HTC chargers that are capable of 1 amp or more the Thunderbolt will only pull 0.5 amp.
     
  8. recDNA

    recDNA Member

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    Any idea where i can get the cheapest price?
     
  9. christim

    christim Super Moderator
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    what the phone temp too. I was using GPS with the D1 in the windshield mount and noticed the phone wasn't charging. It got warm enough that it would not charge. A few of the battery widgets displays temp too. I think the cutoff point was around 120-125 degrees. Once I saw what was happening I moved the phone out of the sun. Sun + turn by Turn GPS navigation running with maps displayed + Charging = too hot.
     
  10. recDNA

    recDNA Member

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    Mine is freezing cold with the air conditioner on. It sits right on the ac vent.
     
    #10 recDNA, Jul 5, 2011
    Last edited: Jul 5, 2011
  11. Fruity Pebbles

    Fruity Pebbles New Member

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    I got the two-port HTC charger from Amazon for $21.
     
  12. recDNA

    recDNA Member

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    Does it have to be the stock tbolt charger or are all the htc car chargers 1 amp?
     
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