Help For Autodroid Rom

[Sharma Manu]

Hi Friends,
I am Using My tab As Car Tablet I install Autodroid Rom ROM is Superb and approximately FULL fill all my Needs Good GPS Fix and Music Player With DSP Effects.........

My Problem?

I am Using Stay Awake From Developer mode Then I connect my Nexus 7 via car charger I notice That instead of Charging My tab Discharge Fastly.......
ANY SUGGESTIONS PLEASE ?

SORRY FOR MY BAD ENGLISH?