12/24V 10/20/30A Simple Solar Controller PWM Charge Discharge Solar Controller

12/24V 10/20/30A Simple Solar Controller PWM Charge Discharge Solar Controller Battery type: B1=lead-acid battery 12V/24V battery automatically identified B2=Lithium-ion battery (lithium battery) 3 strings of 3.7V=11.1V B3=Lithium iron phosphate battery 4 series 3.2V=12.8v Charge cut-off voltage:14.4V(B1) 12.6V(B2) 14.6V(B3) Discharge cutoff voltage: 10.7V(B1) 9v(B2) 10V(B3) Discharge recovery voltage: 12.6V(B1) 10.5(B2) 12V(B3) Light-controlled light-on threshold: 8V for PV panels (light-controlled light-on with delay) Light control off threshold: PV panel 8V (light control off light with delay) USB output: 2-way USB output 5V/2.5A (max) Standby current: