How To Unhook A Battery In A Car. Car batteries store an enormous amount of energy and theyre optimized to deliver it in a very short period of time. Disconnect the negative battery terminal to preserve your battery.
Wait five minutes for the diagnostic information to. First pull out the negative cable and secure it to one side of the engine with a cable tie. For safety purposes always disconnect the negative cable first.
Take your wrench then loosen the nut connecting the batterys negative terminal.
The negative terminal may be marked with a minus - symbol or it may be unmarked. Watch more How to Make Simple Car Repairs videos. The primary hazard of welding near the battery is spatter and heat could damage it or cause. Disconnect the negative battery terminal to preserve your battery.
