Can You Disconnect Jumper Cables While Car Is Running. If you turn the car off to remove the jumper cables there is a good chance youll be putting the cables back on to jump it a second time. Removing the battery can potentially cause damage to some of the more delicate electronics in the car.
Why does my car die when I take jumper cables off. Ive heard that recommended but I think its right up there with dont use your cell phone while pumping gas. In order to charge the battery the output of the alternator is over 14 volts.
Answer 1 of 10.
Start the working cars engine and let it run for about 2-3 minutes. This is most likely due to a bad alternator and it needs to be checked. Once the dead car is running you may disconnect the jumper cables starting with the black negative cable clamps. Hi my name is thomas and my craftsman tractor lawn mower model number 917273012 has a battery that is appx 1 year old.
