1. sealover1's Avatar
    Samsung Note 2 car charging advice please

    Hi guys I have been using my note 2 sat nav in the car for a while now and it always runs flat after a few hours of use. I was running it off the rear usb in my car stereo but it kept going flat after a few hours so someone said fit a 2.1A usb charger and that should help.

    So I have now fitted a dedicated 2.1A usb just for my note cradle/phone holder and my phone is still running flat after a few hours after use. its a real pain getting somewhere and I cant use my phone cuz I need to save the power for the sat nav.

    is there not anyway of using the sat nav on my phone and get it to slowly charge as well.

    surly there must be a way by now to use my phones Sat Nav and charge it in the car

    any help with this would be great if there's a part I need a link would be great (I'm in the UK )

    08-03-2015 01:10 PM
  2. SpookDroid's Avatar
    First things first: The USB Port is not the whole story. Are you sure your phone is charging at full 2 Amps? The cable might come into play as well (very long cables will degrade power the longer they are, as well as cheaply-made ones). One way to make sure is to plug in your phone, turn the screen off and let it charge off the car port for about 10 minutes. Does it go up a significant amount, comparable to when you charge it using a wall charger? If not, then you're not getting the 2Amps out of the charging port.

    It can also be that your battery just needs replacing. If this is a Note 2 and you're still using the original battery, then I'm surprised it even lasts a few hours. Another thing to remember is that the screen is the main battery drainer, so make sure not to use full brightness and that should help balance the charge VS depletion ratio.
    08-03-2015 01:21 PM
  3. sealover1's Avatar
    not I'm not sure if it is charging at 2A. its a not a long cable its quite short and not a cheap thin one either. the battery is around 6 months old and one that come with the phone they both last around the same time. it does charge when its switched off in the car but does it charge faster or slower then my indoors charger I don't know I have never timed it but it does charge it yes
    08-03-2015 01:27 PM
  4. SpookDroid's Avatar
    Check to see if it charges at least as fast as your wall charger. It may only be drawing the standard 0.5A which is gonna charge very slowly and definitely not enough to be on par with the drain. I'd say that to at least be 'even' you would need a 1.5A charging rate and a 2A to see increase in the battery level while actively using the device.
    08-03-2015 01:41 PM
  5. sealover1's Avatar
    ok will check.... if it is only drawing the standard 0.5A can anything be done about it?
    08-03-2015 01:45 PM
  6. SpookDroid's Avatar
    Mostly just changing the USB Port and/or cable. I use the Samsung Car charger on mine and so far no issues, I can navigate with screen on and still gain some charge afterwards.
    08-03-2015 03:36 PM
  7. sealover1's Avatar
    I downloaded Galaxy Charging Current app now and plugged into a 2.1a car usb it only reads 200mA in my car but it wont charge when using google maps... plugged into the charger indoors it reads 700mA but it does charge still when using google maps.

    So I,m saying you need 700mA to use google maps and to get a charge.
    I read that using cheap chargers and leads can make a huge difference so have now bought some new ones..

    I have just bought a good quality car charger and a charge only 1m usb lead both good quality so will be able to test the diff between cheap chargers & leads.

    what I bought is below with the description will let you know the results when I get them...

    PortaPow 2.5A Truly Universal Dual USB Car Charger iPhone Android Micro Twin 4 5

    (Both USB sockets have their data lines shorted as per the official charging spec, so unlike rival designs it will charge not only Apple iPhones and iPads at high speed but also Android smartphones and other micro USB devices. Since the two sockets are identical, you don't have to worry about which one you plug into. It won't put your device into 'data connection' mode so you can still use your device during charging. It is also EMC certified, so it is less likely to produce interference when playing audio through your car stereo. 12-24V input is supported, meaning it works fine with car, motorbike and truck sockets.)

    PortaPow High Speed Fast Charge Only 1m 100cm 20AWG Micro USB Cable for Android

    (This will allow you to charge micro USB smartphones, tablets and other devices such as the Raspberry Pi, Google Nexus or Blackberry Playbook at full speed from a powerful charger or computer USB socket.

    •Follows the 'Dumb USB' specification', so allows you to get the full power from a mains or car USB charger which does not follow this specification, such as an Apple iPhone/iPad charger. Our mains chargers and many others already follow the Dumb USB specification, however this low resistance cable may still result in faster charging than ordinary cables.
    •A normal cable only allows charging at 0.5A from a computer, this allows you charge upto 2-3x faster.
    •If you have purchased a powerful mains or car USB charger but find that it gives poor performance or does not work with your micro USB device, this cable will most likely solve the problem.
    •Prevents your device going into 'data transfer' mode when connected to a computer, acting as a 'USB Condom' to prevent data theft / viruses when charging from an unknown USB socket. It works with all devices which charge from a micro USB socket including smartphones and satnavs from Samsung, HTC, Google, Sony, TomTom, etc.
    •20 AWG thick low resistance copper cable for high speed 2A charging with lower power loss than standard cables 24 or 28 AWG cables.
    •Thicker plastic housing with extra reinforcement at both connector ends where cables commonly become worn
    •Allows the fastest possible charging speed for the OnePlus One and Asus Transformer T100 - use together with a good quality mains charger such as the original version.
    •Updated 6th January 2015 - Now with higher quality TPE casing, more flexible, environmentally friendly and tactile than cheaper PVC plastic. The cable is now embossed with 'PortaPow Fast Charge/ No Data' and has red connectors to show it is a genuine PortaPow Charge Only Cable.)
    08-04-2015 03:58 AM
  8. SpookDroid's Avatar
    Those apps aren't usually accurate, but can give you a good idea of how the charger is doing, and in your case, the car one is definitely not performing as it should... I hope the new ones you get help!
    sealover1 likes this.
    08-04-2015 02:01 PM
  9. sealover1's Avatar
    no I never thought they would be that accurate but like you say it will give me a idea on how its doing. it should be a lot higher then it is fingers crossed the new charger and leads help. failing that I have now bought a mobile car battery charger and spare battery as well so if it does run low I have a spare one to use in the car and in the home.
    SpookDroid likes this.
    08-04-2015 02:09 PM
  10. sealover1's Avatar
    incredible unbelievable difference just with the new lead 3 times as fast charging rate from 200mA to 800mA (see below)
    PortaPow High Speed Fast Charge Only 1m 100cm 20AWG Micro USB Cable for Android

    with the new charger (see below) as well my charge rate went up to 1600mA
    PortaPow High Speed Fast Charge Only 1m 100cm 20AWG Micro USB Cable for Android

    so if anyone is having this problem this works a treat I,m over the moon I can now use my google sat nav and it still charges my phone with the screen really bight & blue tooth on and even the music playing
    08-06-2015 10:10 AM
  11. SpookDroid's Avatar
    Glad it worked! Enjoy!
    08-06-2015 10:39 AM

Similar Threads

  1. Wake up with Samsung Galaxy S6 turned Off
    By AC Question in forum Ask a Question
    Replies: 2
    Last Post: 08-03-2015, 11:39 AM
  2. No sound when screen mirroring S3 to Samsung smart TV
    By AC Question in forum Ask a Question
    Replies: 0
    Last Post: 08-03-2015, 11:30 AM
  3. Please someone help me with my sd card
    By Esc Butt in forum Ask a Question
    Replies: 0
    Last Post: 08-03-2015, 11:25 AM
  4. please help -No signal after reboot-
    By mariusfilip in forum HTC One M8
    Replies: 0
    Last Post: 08-03-2015, 11:20 AM
  5. Samsung Galaxy Mega 6.3 screen issue
    By AC Question in forum Ask a Question
    Replies: 0
    Last Post: 08-03-2015, 11:13 AM