Aspects described herein relate to a conformal wearable battery (CWB) and/or a system that includes plural battery cells. The CWB and/or system includes a flexible printed circuit board assembly (PCBA). The plurality of battery cells are arranged in a pattern on a same side of the flexible PCBA. One or more examples of the flexible PCBA include cutouts and electrical connection pads. A battery cell is connected to an electrical connection pad via electrically conductive elements, such as tabs. In one or more examples, the electrically conductive elements extend through the cutouts in the flexible PCBA. In other examples, the electrically conductive elements wrap around an edge of the flexible PCBA.