Introduction:(1) There are optional 10A 20A 30A 40A 50A 60A 70A 80A 90A 100A models: 10A: If your battery is 12V, the max solar panel input is 25V 120W, If your battery is 24V, the max solar panel input is 50V 240W; 20A: If your battery is 12V, the max solar panel input is 25V 240W, If your battery is 24V, the max solar panel input is 50V 480W; 30A: If your battery is 12V, the max solar panel input is 25V 360W, If your battery is 24V, the max solar panel input is 50V 720W; 40A: If your battery is 12V, the max solar panel input is 25V 480W, If your battery is 24V, the maximum solar panel input is 50V 960W; 50A: If your battery is 12V, the max solar panel input is 25V 600W, If your battery is 24V, the max solar panel input is 50V 1200W; 60A: If your battery is 12V, the max solar panel input is 25V 720W, If your battery is 24V, the max solar panel input is 50V 1440W; 70A: If your battery is 12V, the max solar panel input is 25V 840W, If your battery is 24V, the max solar panel input is 50V 1680W; 80A: If your battery is 12V, the max solar panel input is 25V 960W, If your battery is 24V, the max solar panel input is 50V 1920W; 90A: If your battery is 12V, the max solar panel input is 25V 1080W, If your battery is 24V, the max solar panel input is 50V 2160W; 100A: If your battery is 12V, the max solar panel input is 25V 1200W, If your battery is 24V, the max solar panel input is 50V 2400W; (2) System connection: 1. Connect the battery to the charge regulator - positive and negative. It will show 1 if a 12V battery is detected and 2 if a 24V battery is detected 2. Connect the PV modules to the regulator - positive and negative. 3. Connect the user to the charge regulator - positive and negative. Tips: The reverse order applies when uninstalling. Improper sequence will damage the controller. (3) Safety Instructions: 1. Before installing for the first time, make sure the battery has enough voltage for the controller to recognize the battery type. 2. The battery cable should be as short as possible to minimize losses. 3. The regulator is only suitable for lead-acid batteries: OPEN, AGM, GEL; It does not work with NiMH, Li-Ion or other batteries. 4. The charge regulator is only suitable for regulating solar modules. Never connect other charging sources to the charging regulator. Name: Solar Panel Controller Rated voltage: 12V 24V automatic; Application: Solar system controller; Current: as shown; With timer and light sensor, it can be used in solar lighting system; For off-grid photovoltaic solar systems only; For 10A 12V PV system: 120W solar panel, 12V lead acid battery, 21V for maximum input voltage For 20A 24V PV system: 240W solar panel, 24V lead acid battery, 42V for maximum input voltage Packing list: Solar Panel Controller x 1 Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don&#39;t mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks. <div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

Solar Charge Controller Photovoltaic Solar Panel Battery Regulator Black Blue 30a