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  1. Thread Author  Thread Author    #1  

    Default EVO as a car GPS device and charging???

    Question, I'm sort of new to the Android platform (have been with an iPhone since the 1st model)

    Bought an EVO last week-end - and so far its an awesome device! I do miss the higher quality apps of the iPhone BUT....

    OK

    my question is, and I hope it makes sense. But it appears that if I use a car USB charger to power the EVO and charge the battery, the battery never fully charges and in fact on longer drives it actually consumes battery as well? Mostly used as a GPS with Google Navigate (no other real apps in the background).

    I stopped at BestBuy and the guy (nice as he was) gave me an answer I didn't agree with. As he stated since the EVO is more of a laptop then phone is can't charge and run at the same time... which makes some sense BUT I have a hard time believing the power unit in the phone draws that power?

    This is sort of a deal breaker for me - as I don't want to use it as a GPS or Pandora for that matter and end up at my destination with little to no power... The Best Buy person suggeted I buy a 2nd battery - which is great and all but would i'd rather not have to charge 2 batteries and carry the spare. I would much rather have a system that worked like it did with my previous phone. Don't want to sound like a downer here at all -- I really like the EVO better then the iPhone and my wife seems to agree.

    Thanks for any info on this and I'm looking forward to enjoying this site!

    JOhn
  2. #2  

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    assuming that everything is functioning properly - i believe that an OEM cigarette lighter charger should trickle charge the device enough to compensate for the GPS Navigation usage. my guess is that if you leave it plugged into the cigarette lighter during the long trip - your battery should remain close to 100%.

    i have used the phone for long drives and talked on the phone while simultaneously using 4G data (in and out) all the while using the Sprint OEM car charger and i was at 100% charge at my destination. i doubt that GPS and Navigation use more than Voice 3G + 4G data combined.

    time for you to go back to the test cockpit and try again.
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  3. #3  

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    Check the output of your charger. 500ma might not be enough to feed GPS.

    I have a 700ma charger and it holds steady with GPS and slacker running
  4. Thread Author  Thread Author    #4  

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    Quote Originally Posted by pinoyxpryde View Post
    Check the output of your charger. 500ma might not be enough to feed GPS.

    I have a 700ma charger and it holds steady with GPS and slacker running
    Is there a screen on the phone that shows what the power level is coming in?

    Now I'm not using an actual car charger cable to micro usb... I am using a car to usb adapter plug then plugging in a usb to micro usb cable. Used it on my iPods and iPhone from previous gadgets -- I assumed (yeah I know what that means lol) that all usb adapters were a set power level. Actually I am hoping I'm wrong in this case :-)
  5. #5  

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    Usb spec is 500ma. The evo's ac charger is 1000ma. You want a car charger capable of as close to 1000 as possible. Also watch the temperature; if the evo gets too hot while charging it will stop and blink the led orange and green until it cools enough, as a precaution to avoid battery exploding. Often phones will get very hot charging and gps nav and Pandora.
  6. #6  
    irock1985's Avatar

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    yea its probably just the output of that charger your using.. Check the label on the base adapter and see what it is
  7. #7  

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    BTW, just one more example that BB people often don't have a clue, and when they don't they'll just guess or make something up.

    This Belkin charger is rated at a full 1000ma:

    http://www.amazon.com/Belkin-Micro-A...idcentral00-20
    Last edited by meyerweb; 07-04-2010 at 10:06 PM.
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  8. #8  

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    On a recent trip from St. Louis to Chicago, I had Google Nav running while watching movies that I was running through BT and my charger kept the phone at almost 100% the entire time.
  9. #9  

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    Quote Originally Posted by meyerweb View Post
    BTW, just one more example that BB people often don't have a clue, and when they don't they'll just guess or make something up.

    This Belkin charger is rated at a full 1000ma:

    Amazon.com: Belkin Micro USB Auto Charger 5VOLT 1A: Electronics
    This is the USB car charger that I have, and I use my Evo as a GPS exactly the way you say you want. This one not only fully powers the Evo, but also charges it at the same time.
  10. #10  
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    Yeah it definitely depends on the capacity of your car charger. I have the 850 one from Sprint that was sold as the official charger for the Palm Pre, and it charges my battery quickly, even if I use Sprint Navigation.

    Invest in a good charger and you won't have any problems.
  11. #11  
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    Quote Originally Posted by MannyZ28 View Post
    Yeah it definitely depends on the capacity of your car charger. I have the 850 one from Sprint that was sold as the official charger for the Palm Pre, and it charges my battery quickly, even if I use Sprint Navigation.

    Invest in a good charger and you won't have any problems.
    I have the same one (I think it is 900ma though) and it charges my Evo perfectly.

    And just for the record for the BB employee...laptops can charge while in use....
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    Quote Originally Posted by mightymouse68 View Post
    On a recent trip from St. Louis to Chicago, I had Google Nav running while watching movies that I was running through BT and my charger kept the phone at almost 100% the entire time.
    Maintaining a full charge is easier and produces less heat than actually charging the battery. I suspect it would have more issue had your battery been lower when you plugged it in.

    Of course, it's all situational anyway as to when it overheats. If you have your EVO propped in front of your car's A/C vents, then no it'll likely never overheat and stop charging
  13. #13  

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    I had to stop in and laugh at the answer that the BB employee gave you. It's always hilarious to me when someone completely makes up an answer off the top of their head and presents it as fact.
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    Mine says for output 5VDC 1.5A - what does that mean in terms of ma? Seems to charge my phone alright but I haven't tried using GPS while charging in the car (I leave the GPS up to my Garmin...)
  15. #15  

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    i really like my evo. i'm almost always using it. to the point where like the guy who wrote an article about returning his ipad to an apple store. he said it wasn't the ipad's fault, it was his fault. he wanted to free himself from always finding some reason to play with the ipad. the ipad was taking over his life. evo hasn't taken over my life, but has become a very important part of my life. it is a very good tool.
    so threads like this really irk me. with a phone like the evo, htc and sprint should have dealt with all of these power issues. the evo battery should last longer and trickle charge quickly. since the htc software update i get longer battery life depending upon what i do, if i'm in my car talking, battery still dies fast. if i take a long trip and discover that using the car charger didn't make the difference, i'd be pissed if i'm on zero and need a wall charge, at the lake in the middle of no where
    Last edited by darrylb; 07-05-2010 at 11:27 AM.
  16. Thread Author  Thread Author    #16  

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    Thanks guys and (gals?) -- you rock!

    The two usb adapters I have in my car didn't have a label but looked them up on line and what do you know. Both were rated at 500ma! I saw one rated at 2.1a (2100ma?) made for iPad use - is that too much juice; or does the EVO regulate the power? The one cool thing is its flush to the cigarette lighter socket...


    again thanks for the help....

    John
  17. #17  

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    It's way more than you need, but it shouldn't bother it.
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    Quote Originally Posted by mrazzino View Post
    Mine says for output 5VDC 1.5A - what does that mean in terms of ma? Seems to charge my phone alright but I haven't tried using GPS while charging in the car (I leave the GPS up to my Garmin...)
    1.5A=1500mA

    The stock wall charger that came with out phones is rated at 1000mA which equals 1A
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  19. #19  

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    Juuuuust making sure, and after reading the responses here this is probably a dumb question.

    I have , with the specs:
    Input Voltage 12-24 vdc
    output voltage 5dc +-5%
    Max output current 1000MA (1A)
    My device gets uber hot when using this adapter. This one is safe for my EVO, right?
  20. #20  
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    Quote Originally Posted by jalba3 View Post
    1.5A=1500mA

    The stock wall charger that came with out phones is rated at 1000mA which equals 1A
    Thanks! I realized this about 5 minutes after posting my question.. lol. Oops! At least I know my charger will be sufficient for my Evo (or I think it is. It is actually a Dual USB 12v converter so maybe each one only outputs 750mA.) I guess I'll find out.
  21. #21  

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    Quote Originally Posted by mrazzino View Post
    Mine says for output 5VDC 1.5A - what does that mean in terms of ma? Seems to charge my phone alright but I haven't tried using GPS while charging in the car (I leave the GPS up to my Garmin...)
    1 amp = 1000 ma (milliamps). It's the metric system. So yours will supply up to 1500 ma. Whether that's too much depends on how the charging circuit in the Evo works. If it's regulated so it won't draw more than the phone can handle, you're fine. If it's not, then it could conceivable draw enough current to damage the phone.

    I think that's unlikely, but it's hard to know for sure. The battery gets pretty hot with a 1 amp charger. If it charges faster and gets hotter with a 1.5 amp charger, that won't be good for long term battery life.
    PLEASE, when asking for help provide as much information as possible. We can't help unless we know what the symptoms are and what you did before they began.

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  22. #22  

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    Quote Originally Posted by darrylb View Post
    ....

    so threads like this really irk me. with a phone like the evo, htc and sprint should have dealt with all of these power issues. the evo battery should last longer and trickle charge quickly. since the htc software update i get longer battery life depending upon what i do, if i'm in my car talking, battery still dies fast. if i take a long trip and discover that using the car charger didn't make the difference, i'd be pissed if i'm on zero and need a wall charge, at the lake in the middle of no where
    I'm sorry, but I'm tired of listening to people whine. There's no magic battery that's going to solve these "issues." Given current technology, the only way to get significantly more battery capacity is to use a bigger battery, but everyone wants their phones to be thinner, not thicker.

    When the radio(s) are transmitting and receiving, they use power directly related to the strength of the signal from the tower. The weaker the signal, the more power the phone uses. No magic solution here, either. The software and circuitry can be tweaked to use less energy when the phone's idle, but radios are what they are.

    "Trickle charge quickly" is an oxymoron. Trickle charge means low current, and low current means slower charging. That's physics, and I don't care what battery or phone or charger you use, you can't change it. The only way to charge faster is with a higher power charger, and that's not trickle charging.

    As far as "lasting longer," I've got two comments: mine lasts me a good 14 to 15 hours in normal use. I've got no issues with that. I can always give it a little more charge in the car or at work. And see my comment about battery technology. More capacity means more size. Do you really want a bigger phone?

    The factory chargers are 1 amp (1000 ma). If you choose to use a charger with less output, you can't blame HTC if the battery charges slowly or drains while using it as a GPS. And if you have a 1 amp charger, you can charge your phone just as fast at the lake as from a wall outlet.
    PLEASE, when asking for help provide as much information as possible. We can't help unless we know what the symptoms are and what you did before they began.

    If I've helped you, please click the "Thanks" button.

    Have a Galaxy S3? Click here ==> Everything you wanted to know about your Galaxy S3
  23. #23  

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    Quote Originally Posted by johnner1999 View Post
    Thanks guys and (gals?)
    I saw one rated at 2.1a (2100ma?) made for iPad use - is that too much juice; or does the EVO regulate the power? The one cool thing is its flush to the cigarette lighter socket...


    again thanks for the help....

    John
    Quote Originally Posted by Vincent Law View Post
    It's way more than you need, but it shouldn't bother it.
    That's not necessarily true. Read my prior post. It depends on the charging circuitry in the phone. It could allow more current than the phone can handle (bad design, but it wouldn't be the first design to assume you'll never use an out of spec component), or it could allow the battery to charge faster, and generate more heat, neither of which are really good for the battery.

    I'd stick to a 1 amp charger. Since that's what HTC supplies, we know it won't damage the phone or battery.
    PLEASE, when asking for help provide as much information as possible. We can't help unless we know what the symptoms are and what you did before they began.

    If I've helped you, please click the "Thanks" button.

    Have a Galaxy S3? Click here ==> Everything you wanted to know about your Galaxy S3
  24. #24  
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    I had this same issue with my Palm Pre. The universal car charger that Sprint was selling when the phone was new didn't put out enough amperage to charge the Pre if Sprint Navigation was being used. They quickly came out with a higher capacity charger.
  25. #25  
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    Quote Originally Posted by johnner1999 View Post
    Question, I'm sort of new to the Android platform (have been with an iPhone since the 1st model)

    Bought an EVO last week-end - and so far its an awesome device! I do miss the higher quality apps of the iPhone BUT....

    OK

    my question is, and I hope it makes sense. But it appears that if I use a car USB charger to power the EVO and charge the battery, the battery never fully charges and in fact on longer drives it actually consumes battery as well? Mostly used as a GPS with Google Navigate (no other real apps in the background).

    I stopped at BestBuy and the guy (nice as he was) gave me an answer I didn't agree with. As he stated since the EVO is more of a laptop then phone is can't charge and run at the same time... which makes some sense BUT I have a hard time believing the power unit in the phone draws that power?

    This is sort of a deal breaker for me - as I don't want to use it as a GPS or Pandora for that matter and end up at my destination with little to no power... The Best Buy person suggeted I buy a 2nd battery - which is great and all but would i'd rather not have to charge 2 batteries and carry the spare. I would much rather have a system that worked like it did with my previous phone. Don't want to sound like a downer here at all -- I really like the EVO better then the iPhone and my wife seems to agree.

    Thanks for any info on this and I'm looking forward to enjoying this site!

    JOhn
    That is complete BS. I think if the person working at Best Buy had an electrical engineering background, and was in a position to reverse engineer the phone and ascertain the phone "doesn't charge and work at the same time" that he would really be working at Best Buy?

    Anyway, my phone charge capacity will go up even when using Google Navigation for a 45 minute drive. I went from 80% to 100% (or something like that) when I pulled the charger off. My car USB charger outputs 1amp (for a Touchstone).

    The solution is to buy a charger that puts out more amperate. If you can snag a genuine palm charger (intended for a touchstone), that one is rated at 1amp.
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