30A Solar Panel Controller Battery Charge Regulator 12V/24V Auto With Dual USB Features: new and. Build-in industrial micro controller. -key setting,digital display,auto memory function. Fully 4-stage PWM charge management. Build-in short-circuit protections, open-circuit protections, reverse protections, over-load protections Dual mosfet reverse current protections, low heat productions. With double USB ports charge Free pair Style Plug included The Regulator is suitable for lead batteries:OPEN, AGM, GEL It is not suited for metal hydride, lithium or other batteries Specifications Rated Voltage: 12V 24V Auto Application: Solar System Controller Rated Current: 10A/20A/30A Max. PV Voltage: 50V Max. PV Input Power: 30A: 390W (12V) 780W (24V) Size: 133 x 70 x 34mm Instructions: Make sure your battery has enough voltage for the controller to recognize the battery type before first installation. The battery cable should be as short as possible to minimize loss. The regulator is suitable for lead batteries: OPEN, AGM, GEL It is not suited for metal hydride, lithium or other batteries. The charge regulator is suitable for regulating solar modules. Never connect another charging source to the charge regulator. System Connection: Connect the battery to the charge regulator - plus and. it will show 1, if it detects 12V battery, 2 if it detects 24V battery. Connect the photovoltaic module to the regulator - plus and . Connect the consumer to the charge regulator - plus and. Package Includes 1 x Solar Panels Battery Charge Controller 1 x User Manual