The PCM 4S Li-Ion 35A DALY with PCB protection is a battery management system manufactured by DALY that is equipped with multiple layers of protection circuitry for lithium-ion cells. This model contains intelligent protection circuitry which monitors voltage, current, and temperature to protect the cells from overcharge, overdischarge, overcurrent, and temperature extremes, ensuring safety and reliability. The unit measures 75x48x9mm and is designed to provide up to 35A of current at a nominal voltage of 14.8VDC. The PCB also offers reverse current, over charging, and under voltage protection to further enhance safety and prolong the life of the cells.