Dual MOS LCD Display PWM Solar Charge Controller A robust 50A auto 12/24V PWM solar charger equipped with an LCD monitor, engineered for stable off-grid solar power control. Product Features Compatible with three mainstream battery chemistries: lead acid, 3S lithium-ion, and 4S lithium iron phosphate. Intuitive LCD interface with customizable charge/discharge thresholds; memory retains parameters after power loss. Full 3-step charging algorithm — constant current, constant