These cordless torque wrenches are made by Milwaukee. Torque wrenches tighten bolts to a predetermined torque to prevent overtightening. Users set the desired torque and the tool automatically stops tightening just before reaching the desired torque. The wrench can then be turned by hand for final tightening. A digital readout displays the torque and stores data for future use. These torque wrenches are powered by a 12V battery. Tool batteries can often be used with tools of the same brand, battery series, and voltage. Voltage describes the level of power the battery provides. Amp-hours (Ah) describes the amount of power the battery holds (its capacity), which determines how long a fully charged battery can perform before needing a recharge. The higher the Ah rating of the battery, the greater its storage capacity. As voltage and Ah ratings increase so do the weight and bulk of the battery and the tool it powers.
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