Abstract: Electric tool system and method of operating the same. One electric tool system includes a first electric tool and a second electric tool. A method of operating the electric tool system includes providing a first battery for the first electric tool and a second battery for the second electric tool. The method further includes designating the first battery as a master, and designating the second battery as a slave. The method further includes configuring the first electric tool to a first operating mode, detecting a first operating parameter by the master, and transmitting a first signal from the master to the slave based on the first operating parameter detected by the master. The method further includes the slave receiving the first signal from the master and enabling operation of the second electric tool.