Features 1、Wide Application: This solar panel boost controller is suitable for electric vehicles or solar systems, charging 24V 36V 48V 60V 72V battery, without changing the connection method. 2、High Efficiency: Adopts advanced MPPT technology, with a maximum tracking efficiency of &gt;99%, saving energy of solar panel, maximum conversion efficiency of &gt;97%, with fast speed. 3、Circuit Protection: The MPPT solar boost controller has overcharge protection, battery reverse connection protection, and short circuit protection, ensuring safe and reliable operation. 4、LED and Metal Shell: Adopts LED digital display, visually displays the charging current and voltage, tracks the battery charging status, the metal shell ensures better heat dissipation effect. 5、Applicable Battery: Support manual setting of battery voltage and charging parameter through button, suitable for lithium battery, iron lithium battery, nickel hydrogen battery, gel battery, etc. Specification Item Type: MPPT Solar Boost Controller Model: BM-4072 Material: Aluminum Alloy Solar Input Voltage: 12-50V Maximum Solar Current: 22A Maximum Solar Power: 400W 18V Battery Type: 24V 36V 48V 60V 72V and custom battery voltage (default 48V) Battery Overcharging Protection Voltage: 28.8V (24V system), 43.2V (36V system), 57.6V (48V system), 72V (60V system), 86.4V (72V system), custom voltage No Load Loss: <20mA Conversion Efficiency: >97% MPPT Tracking Efficiency: >99% Working Temperature: -20℃-65℃ Protection Grade: IP65 Battery Compatibility: In accordance with EN61000, EN55022, EN55024 Package List 1 x MPPT Solar Boost Controller 2 x Fuses 1 x User Manual