Follow these instructions to install the battery into the PS30 personal shopper.
Using a Phillips (PH00) screwdriver, loosen the captive screw that secures the battery cover.
Rotate the battery cover up, and remove it from the handle.
With the plastic tab facing the device's handle, press the battery's cable connector into the power connector. The connector is designed to fit only one way.
Position the battery inside the battery compartment.
Insert the tabs on the battery cover into the handle, and then push the bottom of the battery cover down.
Using a Phillips (PH00) screwdriver, tighten the screw that secures the battery cover to the device.
Press and hold the Scan key to power on the device.