The Battery Boss™ WC 4 Control is a compact, wireless electronic device that attaches to the battery and provides real-time battery diagnostics. The Battery Boss™ WC 4 device monitors the battery based on capacity, temperature, State of Charge (SoC), and additional parameters maximizing battery performance and life. The Battery Boss™ WC 4 device maintains 8,200 cycles. Data is quickly and easily downloaded with a PC, laptop, or smart device. Data stored in memory is available in multiple formats for easy analysis. The Battery Boss™ WC 4 device control is UL listed, can be ordered separately as a battery accessory and is available for batteries consisting of 12, 18, 24, 36, or 40 cells.