The MUST PC1800F Series is a highly efficient MPPT Solar Charge Controller (60A/80A models) designed for various battery systems. It supports nominal battery voltages of 12V, 24V, 36V, and 48VDC (with auto-detection for most). The controller offers multi-stage charging (including equalized charging) which prolongs battery life and supports Lithium, Gel, and Lead-acid battery types. It achieves a peak conversion efficiency of 98% (99% MPPT efficiency) and is equipped with comprehensive protection features. Connectivity includes RS485 and USB ports, and it uses fan cooling.