Feature: 1. Wave Peaking Tracking Technology: The solar charge controller adopts double peaking or multi peaking tracking technology. When the panels are shaded or part of the panels are damaged, the I‑V curve will have multiple peaks, but the controller can still accurately track the maximum power point. 2. Current Limiting Charge Mode: MPPT solar charge controller has a current limiting charge mode, when the battery panel power is too large and the charging current is greater than the rated current, the controller automatically reduces the charging power to make it work at the rated charging current. 3. Support Battery and Program: MPPT can track up to 99% efficiency and support different types of battery charging programs such as sealed acid‑rich liquid gel and lithium batteries. 4. Maximum Power Tracking: MPPT solar charge controller has built in maximum power tracking algorithm, which can significantly improve the energy utilization efficiency of PV system. 5. Dual Fan System: The solar charge controller adopts digital power technology, with high circuit energy conversion efficiency, and can support instantaneous high current startup of capacitive loads. It adopts double fan system for better heat dissipation. 6. Automatic Voltage Identification: The solar charge controller supports automatic battery voltage identification. With fault LCD display, convenient for users to determine the system fault. With lithium battery 0V charging function. Built in over temperature protection mechanism, temperature compensation function, and automatic adjustment of charging and discharging parameters. Specification: Item Type: MPPT Solar Charge Controller Material: ABS No Load Loss: ≤0.4W Rated Load Current: 40A Conversion Efficiency: ≤98% MPPT Tracking Efficiency: >99% Temperature Compensation Coefficient: -2mv/℃/2V (Default) Operating Temperature: -10℃-+65℃ Protection Class: IP21 Electromagnetic Compatibility: For EN61000, EN55022, EN55024 Communication Mode: Support RS485 Altitude: ≤3000m. Package List: 1 x Solar Controller1 x Instruction Manual4 x Screw4 x Expansion Screw