06-27-2013 05:51 PM
56 123
tools
  1. iFortWorth's Avatar
    Took my first long road trip yesterday since gotten my S4. While on the aforementioned trip I was using my Google Navigation for directions and traffic. I was also streaming audio at times and had the screen on bright so I could see it better. I did have wifi off.

    I had the phone charging the whole trip via a DC charger. The problem was, the phone was using more power then the charger could provide. Now granted the battery didn't drop as fast as it would had it not been plugged in, but it was dropping nonetheless.

    My question is, anyone aware of a DC charger that outputs more power?

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 09:41 AM
  2. Golfdriver97's Avatar
    Took my first long road trip yesterday since gotten my S4. While on the aforementioned trip I was using my Google Navigation for directions and traffic. I was also streaming audio at times and had the screen on bright so I could see it better. I did have wifi off.

    I had the phone charging the whole trip via a DC charger. The problem was, the phone was using more power then the charger could provide. Now granted the battery didn't drop as fast as it would had it not been plugged in, but it was dropping nonetheless.

    My question is, anyone aware of a DC charger that outputs more power?

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    Probably not. You can try buying a power inverter. That plugs into the DC and has a regular outlet plug on the other end. Some may even have a USB port as well. Then you just plug in your regular wall charger.
    06-10-2013 09:46 AM
  3. iFortWorth's Avatar
    I actually have an inverter. I'll try that on my next leg of the trip.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 09:53 AM
  4. vasekvi's Avatar
    Get a charger made for tablets that puts out 2.1 amps. Then use this app to make sure you are getting the power to your phone that the charger puts out. With the Samsung charger the phone came with I am getting a 1900mA charge rate.

    https://play.google.com/store/apps/d....currentwidget

    Sent from my AT&T Samsung Galaxy S4 using Tapatalk II
    06-10-2013 09:58 AM
  5. paintdrinkingpete's Avatar
    Took my first long road trip yesterday since gotten my S4. While on the aforementioned trip I was using my Google Navigation for directions and traffic. I was also streaming audio at times and had the screen on bright so I could see it better. I did have wifi off.

    I had the phone charging the whole trip via a DC charger. The problem was, the phone was using more power then the charger could provide. Now granted the battery didn't drop as fast as it would had it not been plugged in, but it was dropping nonetheless.

    My question is, anyone aware of a DC charger that outputs more power?

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    The question is how much juice is your current car charger putting out? Many older and generic car chargers will only output 500mA, which is considerably less than the 2A the S4's standard wall charger provides (about 1/4th), and definitely not enough to provide a charge when the phone is fully in use for navigation.

    I have this 1A charger in my car:
    Motorola Micro-USB High Performance 950mA Car Charger - Android Car Chargers - ShopAndroid
    and it works quite well. It doesn't charge as fast the 2A wall charger, but I have used Navigation and BT music at the same time, and the charger was still powerful enough to keep up with it and maintain a positive rate of charging.

    You can look around here:
    Samsung Galaxy S4 Car Chargers - ShopAndroid
    or when shopping for car chargers online or at a store like Radio Shack or Walmart or wherever, just make sure their output is at least 1A (1000mA)
    jimbo1mcm likes this.
    06-10-2013 10:04 AM
  6. iFortWorth's Avatar
    Get a charger made for tablets that puts out 2.1 amps. Then use this app to make sure you are getting the power to your phone that the charger puts out. With the Samsung charger the phone came with I am getting a 1900mA charge rate.

    https://play.google.com/store/apps/d....currentwidget

    Sent from my AT&T Samsung Galaxy S4 using Tapatalk II
    Okay, that's a good idea. I'll try and find one today. Maybe a local WM will have one.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 10:05 AM
  7. iFortWorth's Avatar
    I checked my inverter and it only outputs 500 milliamps and that's less than my car charger, . 6amps.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 11:03 AM
  8. BKlip's Avatar
    I had the same problem. Upgrading to a 2A USB car charger did the trick. Got it for $10 at my local MicroCenter store.
    natehoy likes this.
    06-10-2013 11:07 AM
  9. shaw1234's Avatar
    @ifortworth,
    The 500mA you are looking at on the inverter is output at 115vac. FYI that's around 11.5 amps at 5vdc that your phone uses. The inverter has more than enough power for the phone and is not the bottleneck.

    Sent from my SCH-I545 using AC Forums mobile app
    natehoy likes this.
    06-10-2013 12:01 PM
  10. iFortWorth's Avatar
    Lol. Well just found and bought a 3amp charger from RS. It was 30.00. Guess I'll take it back then. Thanks for the electrical lesson.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 12:30 PM
  11. Golfdriver97's Avatar
    Lol. Well just found and bought a 3amp charger from RS. It was 30.00. Guess I'll take it back then. Thanks for the electrical lesson.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    Careful though...too rapid of a charge isn't great for the battery either.

    Sent from a M.O.A.R. Galaxy S3
    06-10-2013 01:43 PM
  12. iFortWorth's Avatar
    Face plant.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 01:53 PM
  13. dss2000's Avatar
    Be sure to use a charge only cable otherwise it will be in USB mode and only charge at 500mA no matter what the output of the charger is.
    06-10-2013 02:14 PM
  14. Azwizzard's Avatar
    06-10-2013 02:46 PM
  15. natehoy's Avatar
    Careful though...too rapid of a charge isn't great for the battery either.
    As long as the capacity of the charger is at or above what the phone wants, it's all good. The phone will draw the amperage it needs. The important things are voltage (where too high or two low can do damage) and how clean the power is (because "dirty" power causes voltage spikes, so it goes back to voltage).

    That's why, when buying phone chargers, you always want to shop for a good quality one of the highest capacity you can reasonably justify. Because you just know with your NEXT device, it'll need more anyway, and no harm done buying one with a little extra capacity today. You should be buying an absolute *minimum* of a 2A (2,000mA) charger for any modern phone.
    06-10-2013 03:28 PM
  16. iFortWorth's Avatar
    Get a charger made for tablets that puts out 2.1 amps. Then use this app to make sure you are getting the power to your phone that the charger puts out. With the Samsung charger the phone came with I am getting a 1900mA charge rate.

    https://play.google.com/store/apps/d....currentwidget

    Sent from my AT&T Samsung Galaxy S4 using Tapatalk II
    1900? Then this may be part of my problem. While on AC my device has been taking 7-9 hours to get a full charge. I've since downloaded that widget and currently getting only 300mA while plugged into my OEM charger. More powerful car charger?-1370922188214.jpg

    Thanks, David

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 10:43 PM
  17. iFortWorth's Avatar
    And by removing my usb extension cable I got up to 640mA.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-10-2013 10:59 PM
  18. vasekvi's Avatar


    And by removing my usb extension cable I got up to 640mA.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    The Samsung charger that came in the box? That is ridiculous. Something is wrong. Do you have other cables and wall adapters to test?

    I've found mixed results with my variety of chargers and cables.

    Stock charger and cable I get 1900

    Samsung accessory 2amp charger and cable (identical to what the phone came with) 1900

    HP Palm Pre charger and cable around 1060

    HP Touchpad charger and cable 1900

    Older yet identical looking Samsung cable with 2amp charger 1060 (!) and with 1amp charger only like 500mA

    I threw the older Samsung cable away.

    I'm getting the palm touchstone coil in the mail in a couple days and will report back on how the inductive charging rates are. I expect to get around a full 1amp.

    With the stock charger the phone should charge fully in a little over an hour.

    Sent from my AT&T Samsung Galaxy S4 using Tapatalk II
    06-18-2013 08:41 PM
  19. paintdrinkingpete's Avatar
    1900? Then this may be part of my problem. While on AC my device has been taking 7-9 hours to get a full charge. I've since downloaded that widget and currently getting only 300mA while plugged into my OEM charger.
    Thanks, David

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    And by removing my usb extension cable I got up to 640mA.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    Well, the extension could definitely have a negative effect. Are you use *both* the OEM charger *and* cord it came with?
    06-19-2013 08:45 AM
  20. iFortWorth's Avatar
    The issue ended up being with my OEM usb micro cable. It was only putting about 420mA to the phone. After trying another cable with the charger it made all the difference in the world. It now charges in about two hours.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    06-19-2013 09:38 AM
  21. vasekvi's Avatar
    The issue ended up being with my OEM usb micro cable. It was only putting about 420mA to the phone. After trying another cable with the charger it made all the difference in the world. It now charges in about two hours.

    Sent from my SAMSUNG-SGH-I337 using AC Forums mobile app
    Glad you were able to find the problem. I wonder if the cables just mess up or bend pins or if using a cheap cable messes up the usb port on these phones sometimes. I used an El cheapo cable at work to do a file transfer and after it didn't want to seem to charge. This was before I had the widget to verify charge rates. No more cheapo cables for me. And once I get my inductive coil this is what will be residing in the two lint and dust collectors on my phone.

    More powerful car charger?-uploadfromtaptalk1371658604712.jpg

    Sent from my AT&T Samsung Galaxy S4 using Tapatalk II
    06-19-2013 11:16 AM
  22. Rirruto's Avatar
    I feel your pain, have the same issue with my charger but when I use the nav and I know I will be on the same road for a while, I just turn the screen off and keep the audio on. If there's a turn or exit coming, I'll hear the speech and turn the screen on again. Not only will it keep the battery level but also charge it a bit too.
    06-19-2013 01:43 PM
  23. vasekvi's Avatar
    I feel your pain, have the same issue with my charger but when I use the nav and I know I will be on the same road for a while, I just turn the screen off and keep the audio on. If there's a turn or exit coming, I'll hear the speech and turn the screen on again. Not only will it keep the battery level but also charge it a bit too.
    You don't have to do any of that with a 2 amp charger. It will still charge well no matter what you run on it.

    Sent from my AT&T Samsung Galaxy S4 using Tapatalk II
    06-19-2013 03:40 PM
  24. StuartV's Avatar
    Verizon also sells a 2A car charger.

    Also, there's this:

    Amazon.com: ReVIVE Series DualFLUX DC to USB Rapid Car Charger - Compatible with the Amazon Kindle Fire HD 7-inch & 8.9-inch (16GB and 32GB models) - Includes Micro-USB Charge Cable: Kindle Store

    I have the wall version of the ReVIVE and it works fine to charge at 1900mA (from the 2X port).
    06-19-2013 08:32 PM
  25. speed13's Avatar
    Here is my problem, when I take my usb cable from OEM charger and plug to the usb port in my new Hyundai Sonata 2013 it's not charging a lot and and showing up on notification bar connecting to device constantly. Any answers and solution are welcome.
    Note ; I did try all usb cables that I have and that I have used with Galaxy s3 and galaxy s2 phones never had issues until now with Galaxy S4.

    Sent from my Galaxy S4 White - using Tapatalk
    06-19-2013 11:45 PM
56 123

Similar Threads

  1. Car charger plus audio out equal signal noise
    By surfacinglove in forum Verizon Droid Incredible
    Replies: 16
    Last Post: 09-15-2015, 01:17 PM
  2. High Power Car Charger
    By Dunbar42 in forum Verizon Galaxy S III Accessories
    Replies: 9
    Last Post: 10-13-2012, 12:05 AM
  3. Car charger
    By bertbear in forum HTC Droid Eris
    Replies: 8
    Last Post: 11-03-2010, 06:31 PM
  4. More info about this car charger
    By rfs830 in forum HTC EVO 4G
    Replies: 0
    Last Post: 06-21-2010, 10:23 AM
  5. Droid using more power than normal in Idle
    By Jetster220 in forum Motorola Droid
    Replies: 9
    Last Post: 02-23-2010, 08:48 PM
LINK TO POST COPIED TO CLIPBOARD