Features： 1、ENERGY SAVING AND HIGH EFFICIENCY: Advanced MPPT maximum power point tracking technology, the maximum tracking efficiency of 98%, can save panel energy, reduce panel cost. components are used to improve system performance. The maximum conversion efficiency is 97% 2、CLEAR DISPLAY: 4 digit digital tube, real time display panel voltage, charging current, battery voltage, etc., convenient and clear display of charging state. Also allows customers to set the battery voltage and charging parameters freely 3、SAFE AND AVOID MISCONTACT: Wide maximum power point of photovoltaic array, operating voltage range of 12V‑50V. With children lock function, to prevent charging error caused by the wrong touch of the key 4、DYNAMIC PARAMETERS: The design of direct display of each parameter, dynamic display of the device operating data and working state, panel voltage, charging current, battery voltage, etc. 5、LOW POWER CONSUMPTION: Solar panel power technology, standby power consumption is 0, system power consumption from the panel, does not work at night 6、FOR VARIOUS BATTERY TYPES: This product can be applied to a variety of batteries, including lithium battery, lithium iron battery, acid battery, etc. (battery voltage 24V 36V 48V 60V 72V, etc.), with high charging efficiency Specification： Item Type: Solar Boost Controller Material: Aluminum alloy Overvoltage: 28.8V(24V), 43.2V(36V), 57.6V(48V), 72.0V(60V), 86.4V(72V), can be set by yourself Power: ≤300W Reverse Connection Protection: Reverse connection of battery will blow fuse MPPT Efficiency: ≥99% Machine Efficiency: ≥95% Operating Temperature: -35℃~55℃ Insulation Resistance: AC1KV, 5min test/≥20MΩ Waterproof Class: IP54 Package List： 1 x Controller 1 x Fuse 1 x User Manual