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Just like with your TV remote, you can’t use all your car battery forever without consequences. Eventually, it runs out of juice. The alternator will recharge your battery, but only if the car is turned on. If you keep using the battery - say by playing music for hours on end without turning the car on - then you’ll eventually wear out the battery, and then it needs a recharge before it works again. This is also what happens if you accidentally leave your headlights on for a long period of time, only to come back to a car that won’t turn on.
As previously mentioned, your car battery relies on an alternator to recharge it. If the alternator isn’t working, then the battery has no way of being charged, and you’ve got a dead battery on your hands. This, of course, is a two-part problem. If your alternator is broken, then you need to not only recharge the battery, but replace the alternator.
And then, of course, there’s the straightforward answer. Batteries just die at some point to the point where they can’t be recharged. When that happens...well, you’ll just need to get a new battery.Get a Quote 1-Year | 12,000-Mile Warranty
Well, if your battery needs recharging then you won’t be able to turn the car on. And you won’t even be able to sit in the car listening to music.
So, unless you just want to stand next to your car looking at it, I’d say it’s fairly important.
1-Year | 12,000-Mile Warranty