The 266B requires the use of fresh, name-brand batteries. Using generics (such as Amazon Basics or dollar-store type) batteries can lead to malfunctions or an unresponsive tool.
- Battery Cover
The battery cover is directional. There are two arrows, one on the wrench body and one on the battery cover, that must be aligned. If your wrench is not turning on and you have installed a fresh, high-quality battery, please check the orientation of the battery cover.