Since I'm still working on the PCB I can't measure the actual current being drawn by the system, so in order to get an estimate I turned to the datasheets of the various components I'm using.

The largest consumers are the IMU, which in its highest consumption mode (9DOF @ 100Hz) draws about 13mA, and the controller. This one is divided into the CPU, asking about 5mA, and the BLE radio, which goes up to 30mA. The rest of the chips need very little current in comparison and can be neglected.

The battery having a capacity of 1400mAh, a rough calculation puts the battery life at a over 28 hours of non stop data transmission per charge!