MOTL604-ABS16R protection IC is a protection chip dedicated to 4-series lithium batteries. It has built-in high-precision voltage detection circuit and current detection circuit. By detecting the voltage, charge and discharge current and temperature of each battery, the lithium battery charging chip pins can realize battery overcharge, over discharge, discharge overcurrent, short circuit, charge overcurrent, overtemperature and other protection functions. The overcharge, over discharge and overcurrent protection delay can be adjusted through an external capacitor. It has NTC charge and discharge high and low temperature protection to ensure product safety.