1. Input voltage: DC 5.0-30V (under 4.7V with under-voltage protection LVP)2. Output voltage: DC 0.6-30V3. Output current: 0-4.0A4. Output power: 35W under natural cooling, up to 50W under air cooling5. Soft start: yes6. Input reverse connection protection: yes, reverse connection will not burn7. Anti-backflow at the output: yes, it can be directly connected to the battery8. Output short-circuit protection: yes, the output terminal can be directly short-circuited9. Temperature protection (OTP): yes, 100 degrees Celsius10. Working frequency: 180KHZ11. Recommended opening size: about 7.8x3.9cm12. Appearance size: about 7.9x4.2x2.4 cm13. Weight: about 93gFeatures:1. Power LCD display, clear interface, easy to operate2. Digitally controlled voltage and current adjustment, convenient and fast3. Hardware protection: input anti-reverse connection protection, reverse connection does not burn, output short-circuit protection, short-circuit does not burn, output anti-backflow, no need to add an anti-backflow diode when charging the battery4. Software protection: over voltage protection (OVP), over current protection (OCP), over power protection (OPP), over temperature protection (OTP), input under voltage protection (LVP)5. Full of materials, stable performance and wide range of uses6. Long press the rotary encoder button to enter the setting interface, which is easy to operateSpecification: Package Weight One Package Weight 0.11kgs / 0.25lb One Package Size 10cm * 6cm * 4cm / 3.94inch * 2.36inch * 1.57inch Qty per Carton 288 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 288 pcs = 50976 pcs40HQ: 412 cartons * 288 pcs = 118656 pcs