Rated operational voltage DC4-25.0V Constant current resolution +/-(2％+3 digits) Heat dispatch method:Intelligent temperature control fan + All fan Working temperature -10-40 Celsius Adjustable potentiometer Precision multiloop adjustable potentiometer Display mode 4 bit LED tube Expansion port Micro- USB port,Type-C port Product weight:About 57g colour:black model:Ld35 Max discharging power:35W Rated operational current:0.25-5.00A (when fan don't work, the minimum constant current is 0.05A ) Fan Speed:Hydraulic bearing intelligent temperature control fan,speed 8000+/-10%RPM Material:ABS size:84*41*28mm Package Contents: 1*USB Interface Discharge battery test NOTE: This product has no reverse connection protection, the input polarity cannot be reversed, otherwise the product is permanently damaged and cannot be repaired Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.