Product Model: C4S90-4Operating Temperature: 32° to 104° F (0° to 40° C)DC Input: 12.3-16 V (Sedan); 25-30 V (Coach)DC Output: 17.4 V; 5.17 A; 90 WCharging Time*: 1 hr 10 min (Intelligent Flight Battery); 3 hr 20 min (Remote Controller)*The charging time was tested in a lab environment at room temperature (25?) and should be taken as reference only.