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Thread: Nexus 7 : Problem Keeping Charged on Long Trips Using Navigation.

  1. #11
    Low Bitrate coolcoupe's Avatar
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    try turning the brightness down turn wifi off bluetooth of and any other setting you may not be using

  2. #12
    Maximum Bitrate kegobeer's Avatar
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    Quote Originally Posted by Lankin View Post
    That's 3.1 amps, and the OP says he is using a 3.1 amp charger, meaning the OP is getting the same amount of amps from the charger. Like I said earlier lots of people significantly reduce this amperage by using a long tiny gauge cable. And like PCpete said, you need to make sure you are getting AC charging in the settings. If you aren't then you will need to short the middle pins on the charger.

    Keep us updated. I always find it annoying that charging cables for android cant keep the unit powered when using all the features...just seems stupid to me.
    You should read the XDA thread. I also own a Nexus 7 and I've seen "3.1 amp" power adapters not work because they are complete junk. This one is confirmed to work.
    1999 Mercury Grand Marquis GS with: ASRock E350M1 w/4GB RAM, 80GB Intel SSD, Opus DCX3.120, Visteon HD Radio + HDR-USB, PL-18N wifi, OBDLink Scan Tool, BTA6210 BT, BU-353, Win 7 Ultimate, CF 4.0, Alpine MRP-F240 + MRP-T220, RF Punch 1572s, Kicker 8" Comp.

  3. #13
    Variable Bitrate NRGZ28's Avatar
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    Quote Originally Posted by kegobeer View Post
    You should read the XDA thread. I also own a Nexus 7 and I've seen "3.1 amp" power adapters not work because they are complete junk. This one is confirmed to work.
    You can have a great charger, but it won't do what you want it to do unless you also get a heavy duty cable. One that's thick enough and short enough to carry the current required by the tablet. So the moral of the story is... find the highest quality cable you got (a stock HTC cable works great... or even the one that came with the tablet) and try charging it again.
    Current Setup

    Nexus 7 Tablet
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  4. #14
    Raw Wave
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    Just because the charger is 3.1A does not mean that that is what it is consuming.

    Maybe your tablet is consuming more than his...

    Or maybe its battery is worn.


    PS - I love the amazon comment Charging will be automatically stop when battery is full. Der! Why even bother mentioning that - it has nothing to do with the charger!
    Last edited by OldSpark; 03-08-2013 at 07:09 PM.

  5. #15
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    I'm using this USB ROM on my Nexus 7 install with no charging issues. You can enable fast charge and it automatically goes to sleep and enables airplane mode when you turn off the vehicle (as long as that also turns off the power source to the tablet)

    http://mehrvarz.github.io/nexus-7-usbrom/

  6. #16
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    As was pointed out earlier, there are 2 charge modes, USB and AC. AC (fast charge) is triggered by joining a couple of pins on the usb in the charger. The stock cable is capable of 2A @ 5V, which is all that should be required to keep it alive (I have WIFI and GPS on with auto brightness and have never had my battery run out using a homemade 2A/5V power supply.

  7. #17
    Constant Bitrate NoTec's Avatar
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    Quote Originally Posted by SynC View Post
    As was pointed out earlier, there are 2 charge modes, USB and AC. AC (fast charge) is triggered by joining a couple of pins on the usb in the charger. The stock cable is capable of 2A @ 5V, which is all that should be required to keep it alive (I have WIFI and GPS on with auto brightness and have never had my battery run out using a homemade 2A/5V power supply.
    Can you send me a link on how you're doing that homepage power supply? Thanks!

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