Xa122 Battery Board; Overview - Acconeer XM122 Hardware User's Manual

IoT module EVK hardware user guide

3.3. XA122 Battery Board

3.3.1. Overview

The latest addition to the IoT module EVK is the battery board XA122 which is designed to be used
with the XM122 IoT module, enabling a battery-powered radar module in a small formfactor. XA122
is ideal to use for battery-powered applications where formfactor is key. The XA122 is optimized with
regards to size and does not facilitate flashing or debugging. For that purpose, XB122 is
recommended.
The XA122 battery board is easily connected to the XM122 IoT module via a board-to-board
connector and contains a CR2477 battery holder (battery NOT included), tantalum capacitors for
handling current peaks from the XM122 IoT module and a switch preventing the battery from being
short-circuited if inserted incorrectly. It also enables access to some of the interfaces in the board-to-
board connector via test points.
The picture below shows the XA122 battery board. The leftmost picture shows the front side of the
XA122, with the board-to-board connector for the XM122 IoT module, and the rightmost picture
shows the reverse side of the XA122.
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