Patent ID: 8878490

Claim:
A power tool powered by a battery having a guide post, a first battery terminal, a second battery terminal, and a third battery terminal, the power tool comprising: a battery interface for electrically interfacing with the battery, the battery interface including a first electrical terminal, a second electrical terminal, and a third electrical terminal; and a battery receptacle for receiving the battery, the battery receptacle including a channel for receiving the guide post, the channel having a first portion, a second portion connected to the first portion by a first elbow, and a third portion connected to the second portion by a second elbow, wherein the guide post travels through the first portion to the second portion, and through the second portion to the third portion in order to secure the battery within the battery receptacle; wherein, when the guide post is in the second portion, the first electrical terminal is connected to the first battery terminal, the second electrical terminal is connected to the second battery terminal, and the third electrical terminal is spaced apart from the third battery terminal.