Battery jump now won't start. S55

[Sbeinke]

Hi, jumped car from inside of car.
Started first time
Later next time jumped car from inside a little spark and now won't start and no dash lights.
I am puzzled with this one
Help

 

[television]

More detail please, how do you mean when you say you jumped it from inside the car, what model please S class

 

[L John]

Check the battery terminals are not loose.