Features overcharge, overcurrent, reverse solar charging, reverse battery polarity protection, over-temperature protection, and output short-circuit protection. This product is a maximum power MPPT boost charger with a maximum MPPT tracking efficiency of 98%. Applicable Solar Panels: This controller is suitable for solar panels with an open-circuit voltage of 15-30V. Applicable Batteries: 48V lead-acid or lithium iron phosphate batteries; 60V lead-acid or lithium iron phosphate batteries. Set the battery voltage before first use. The controller has a memory function and maintain the set voltage until changed. Automatically turns off the display at night to enter standby mode to reduce power consumption. USB and Type-C can be powered by solar or batteries., Manufacturer: Jnchdghwa