I noticed a battery icon on my dash screen on my evo, what is it for? is it like the cars battery or something? I noticed it lost one tick mark and coincidentally my car didnt start until the 2nd time twice in the past couple days

 

yup battery is dead or dieing or the alternator is bad. Take it on in for warranty

 

theres also one for your cars key fob battery

 

Are you talking about the gauge cluster or the touch screen radio? The radio has a poor indication of your connected phone's battery level. These are the key and charging system/car battery icons:

 

I was talking about the touch screen, it was back at 3 bars today

 

prolly your phones battery life then, if you have Bluetooth.