try turning the brightness down turn wifi off bluetooth of and any other setting you may not be using
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.
Nexus 7 Tablet
Built in head unit
Brutus 1500Watt Amp
Two Boston 12" subs
2006 Infiniti M45 Sport ;) My 4 door Camaro... lol
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 08:09 PM.
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)
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.