Left the headlight on overnight and my battery drained. i hooked a jump box and crank the car. the car cranked a couple of time and then i lost all power to the car. battery has 5-6 volts, i replace a couple of 10 and 15 amp fuses but still have no power. i checked every fuse and relay in the car minus the main relay. i also swapped the 100 and 40 amp fuse for the main battery but still nothing. i tried the horn and hazards to confirm the car had no power, when the key is in the ignition while the door is open i dont even hear the beeping noise. any suggestion on what to check.

 

Fully charge the battery and try again

 

So battery only has 5-6V?
You need to try and charge it or probably replace it.

 

Battery is likely irreparably damaged as 10.5vDC is stone dead and this is half that voltage. Voltage may be too low for a battery charger to even start charging it -- charger won't detect the battery is even there.

-- Chuck

 

As above put on charge a few times and may come into life again ..

 

Prolly needs several hours of charging. Depending on the charger, it could take overnight.

 

When this is over you may see flickering lights on the dashboard. If that is the case you may need a new rectifier in the alternator. This can happen after jump starting this car with a shot battery.