Advanced MPPT Technology >>> MPPT 10A-60A, (max power point tracking), high tracking efficiency up to 99% and peak conversion efficiency of 98%, when the solar panel is shaded, the controller is still able to track the maximum power point accurately. Support Lead-Acid and Lithium-Ion Batteries >>> The MPPT 10A-60A can charge several types of batteries such as AGM, Gel, Deep Cycle, Sealed, Lead-Acid, Flooded, User and LiFePO4 Lithium Batteries. 4 Safe Charging >>> 4-step charging (Bulk Charge, Boost Charge, Float Charge and Equalization) for lead acid batteries and 2-stage charging (Bulk and Absorption) for lithium batteries, as well as lithium reactivation. 9-level safety protection >>> 9 level safety protection and limiting power and charging current beyond the rated range. When the power of the solar panel exceeds a certain level and the charging current is higher than the rated current, the controller automatically reduces the charging power and brings the charging current back to the rated level. Multiple charge control mode >>> Light control mode, normally closed mode and normally open mode. Automatic voltage recognition 12/24V >>> Automatic 12/24V DC system voltage recognition, wide range of maximum power point of PV network, maximum PV input voltage of 50V. Note: If you need the user manual in English, please download it from the part of the guides and documents on the product page. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.