Question about a car battery for a 2013 Volvo S60 T5
 

Will I get a “Low Battery” warning message in my car when my battery is low? If so, how much juice will be left in the battery when the car warns me?

how often do you drive your car and how often do you see the low battery warning? the low battery may be a sign of a battery that doesn't hold a full charge, a charging system issue or a current drain. Not sure if your model has the issue with the satellite radio problem but you may want to call your Volvo dealer to see if your car was identified for a software update.