Does Charging Your Phone Drain Car Battery. This will show the drainage on your battery power. To do this head over to Settings General.
Depending on the age of your car it could potentially drain the car battery. That said youll never kill a car battery by charging a single phone if you drive the car at least 15 minutes every day. Unlike your phones cells most electric-car batteries have a built-in buffer which means you can never really drain them to a true 0 or charge them to a true 100.
Also car batteries are being charged through movement while youre driving.
I suspect that most newer phones will as well. A battery functions best when its kept between 40 and 80. If your vehicle sits too long without a charge from the alternator while charging your devices it could drain the battery. Charging your phone could even drain a cars battery especially if its an older model.
