ECGSOLAX MPPT 40A Solar Charger Controller 12V/24V Auto Solar Controller with LCD Backlit Display

Note: Please connect the battery before setting the system parameters before connecting the solar panel, if it is not in order, it will damage the battery.Ask: How to set the battery type?Reply:(1) Under the main interface, press and hold the "MENU" button for 3 seconds to enter the setting page, and then press the "MENU" button to switch to the battery type page (User Mode 1). (2) After entering the battery type page (user mode 1), press and hold the "Menu" button for 3 seconds to enter the battery type selection page, and then press the "Menu" button or "SET" button to switch the battery type selection between gel battery, sealed battery, flooded battery, and lithium battery.