Brightness W Indicator Step Down Power Supply Current Sensing Resistor
Output prevent backflow: None. Made from a dedicated for IC and high- for precision for current sensing resistor, proving a more stable constant for current, (when 20° to 100° constant for current 1A, temperature for drift less than 1%).
2Pcs 6V CN3791 MPPT Solar Panel Charger Regulator Controller Board 3.7/4.2V
The load should be connected in parallel with the battery. PWM switching frequency: 300KHz.