Features: Automatic Voltage Recognition: The MPPT solar controller automatically recognizes the system voltage, supporting 12V/24V/48V battery systems (30A/40A models are only for 12V/24V systems). This ensures maximum compatibility and ease of use, making it suitable for a wide range of applications. Compatible with Various Battery Types: This controller is designed to be widely compatible with various mainstream battery types, including lithium-ion, LiFePO4, and leadacid batteries. This ensures flexibility and convenience, allowing you to choose the battery type that perfect suits your needs. Efficient 3-Stage MPPT Charging: With a perfect three-stage MPPT digital management charging mode, this controller enables efficient and quick charging while effectively protecting the battery, extending battery time, and improving system performance. It achieves a maximum conversion rate of up to 98%. Built-in Protecting Features: Equipped with built-in fuses and protecting devices, this controller ensures stable operation and output power. It supports overcurrent protecting, overvoltage protecting, undervoltage protecting, high-temperature protecting, and fault alarms. User-Friendly Design: Featuring a high-clear large LCD display screen and buttons, this controller enhances user interaction efficiency. It also has dual USB outputs, allowing for the charging of various USB devices such as smartphones, tablets, and cameras. Wide Application: This MPPT solar controller is widely applicable in solar power generation systems, smart homes, solar chargers, solar monitoring systems, solar lights, solar billboards, and more. Specifications: Color: White Material: ABS Rated Charging Current: 30A/40A/60A(optional) Rated Discharge Current: 10A USB Output: 5V, 3A Max.(60A without USB output) PV Maximum Open Circuit Voltage: 30A: 80V 40A: 100V 60A: 150V PV maximum input power: 30A: 400W/12V, 800W/24V 40A: 550W/12V, 1100W/24V 60A: 800W/12V, 1600W/24V, 3200W/48V MPPT Tracking Efficiency: 99% Conversion Efficiency: 98% System Voltage: 30A/40A: 12V/24V Automatic Recognition 60A: 12V/24V/48V Automatic Recognition Item Size: 30A: 195 * 132 * 63mm/ 7.7 * 5.2 * 2.5in 40A: 217 * 148 * 65mm/ 8.5 * 5.8 * 2.6in 60A: 232 * 163 * 75mm/ 9.1 * 6.4 * 3.0in Item Weight: 30A: 800g/ 1.8lb 40A: 1300g/ 2.9lb 60A: 1400g/ 3.1lb Package Size: 30A: 244 * 174 * 95mm/ 9.6 * 6.9 * 3.7in 40A: 244 * 174 * 95mm/ 9.6 * 6.9 * 3.7in 60A: 265 * 190 * 105mm/ 10.4 * 7.5 * 4.1in Package Weight: 30A: 1000g/ 2.2lb 40A: 1500g/ 3.3lb 60A: 1600g/ 3.5lb Packing List: 1 * Solar Charge Controller 1 * User's Manual