20A Solar Charge PWM Controller For 12V 24V Lithium Ion Lifepo4 Lead Acid Battery With 5V 2A USB

 Tips:

1. Solar panel selection suggestionsCharge 12V battery with 15~23V solar panel Charge 24V battery with 30~46V solar panelDo not use a 24V/36V/48V solar panel to charge a 12V battery. Excessive voltage difference may cause overheating and damage the controller. To ensure stable operation of the system, the power of the photovoltaic panel selected by the user should not exceed 80% of the full load power of the controller.
2. Wiring InstructionsIn order to correctly identify the battery voltage, the controller successfully connects the battery for the first time.

      The 12V battery voltage is higher than 10V.

         The 24V battery voltage is higher than 20V.

         The controller is wired to the battery first, then the photovoltaic panel, and then the DC load