Thnking 10+ year member
Senior VIP Member
Yea it is.Wouldnt a simple indicator that you should stop playing the music loud is to look at the voltmeter? I know some decks have a built in one and if it starts getting lower than 11 volts I would start the car or stop playing music.
But someone who is looking for a general estimate to how long they can play their stereo with their car off, needs to use the formula I posted. As I explained, specs aren't very useful when used on their own to give someone an estimate.