Description: Auto focus tracking charging high charging efficiency non-stop detection. Anti-backflow circuit ultra-low heat generation. Dual USB output the maximum current is up to 2.5A supporting Apple mobile phone charging. Complete 3-stage charging management effectively protect the battery the battery is more durable. Specification: Rated voltage: 12V/24V Rated current: 20A USB output: 5V/2.5A Standby current: <10mA Operating temperature: -35 to +60 degrees Ncrease charging voltage: 14.4V (sealed type) Maximum PV voltage: 50V Maximum PV input power: 260W (12V) 520W (24V) Rated charging current: 10A/20A/30A Rated discharge current: 10A/20A/30A Float voltage: 13.7V (default adjustable) Discharge cut-off voltage: 10.7V (default adjustable) Discharge recovery voltage: 12.6V (default adjustable) Precautions: The solar regulator is only suitable for lead acid batteries:OPEN AGM GEL Not for nickel hydride lithium Liions or other batteries. Installation Method: Please pay attention to the connection method of the 24 volt charge controller first connect the battery then connect the solar panel and finally connect the load. For the safety of use please understand the installation sequence before installation. Package Included: 1 x Solar Panel Battery Regulator Charge Controller 1 x User Manual