What will happen is the car will not start nor will the electrical lights, radio ect. Unless your doing electrical work on the car don't dissconect the battery
Some alarms systems have a protection function which will prevent starting the engine is somebody tried disconnect the battery and connect it again. Also what might happen is that your alarm system doesn't have memory in the case if you disconnect the battery. Thus, if you do disconnect the battery it will reset the alarm system to the default factory settings. By default, the alarm system will block starting the engine.
If you are careful and do not let the positive cable to the alternator come in contact with the motor or frame, nothing will happen. It is just a lot easier and safer to disconnect the positive cable from the battery. It saves possibly shorting out the cable and possible ruining the battery.
The engine will not run with a failed distributor.
Disconnect the transfer case!
everything stops working
nothing will happen
The battery would lose its acid.
Alot of things might happen once its ecosystem changed.
bad relay put your key in the door lock and unlock doors if you have a security alarm with horn possibly disabled this could happen.
For some reason when you take a plug wire off while the car is running it blows the control module built into the distributor. You will have to replace the whole distributor to fix. I have had this happen twice on my 96 Cirrus.
If the capacitor is charged then the battery will explode.
You will die.
If you suck on a battery, nothing will happen, but you will be sucking in bacteria. If you swallow one (which is unlikely to happen to anyone) then you'd probably die.
Nothing will happen because the connector plates on the battery aren't touching the prongs on the phone.
Dead short in the battery. Battery can explode and damage can be done to the electronics in the vehicle.
Noting will happen when you turn on the flashlight without battery.
If you put a battery or a cell in a fire, it could explode.
There are a number of things that could happen when you break open a worn out cell phone battery. You could have battery acid leak on your hands for example.
the xbox will go into a 2 hour shutdown
The battery will go dead.
It wil be on