Thato Mbela called after I realized that I've switched on my vehicle before closed Carwatch on app,that really gave me enough confidence knowing cartrack is always by my side ,but then I keep asking myself if my battery decides to die in time of emergency

Thato Mbela called after I realized that I've switched on my vehicle before closed Carwatch on app,that really gave me enough confidence knowing cartrack is always by my side ,but then I keep asking myself if my battery decides to die in time of emergency how will I communicate with a Cartrack. Thank You.