Can You Charge A Battery While Connected. The interesting thing wthose battery banks is that they are using Li-ion batteries to charge Li-ion batteries. With portable power you can keep your phone charged and charging while you drive to your campground so you dont have to worry about not having enough battery power to take pictures of the beautiful natural scenery once you get there.

You can but you need to regulate the output voltage to ensure that the charger voltage is not passed to the load side. On the Audi - using the under-bonnet terminals is the only realistic way as the battery is under the passenger seat and to get at it you have to unbolt. Because trying to get sufficient charge into a dead battery could take plenty of time before you attempt to start it but that relies on how flat the battery is and how fast the amp rating of the battery charger charges.
It will not harm or damage any of the engines electric electronics components.
Its less hassle and quicker to charge your car battery while its connected. On the Audi - using the under-bonnet terminals is the only realistic way as the battery is under the passenger seat and to get at it you have to unbolt. Click to see full answer. Keep a set in your vehicle.
