The X-Caliber Black Knight series provide the highest power to weight ratio of all the X-Caliber batteries. They can sustain a 20C continuous discharge rate, with a 25C burst rating. These batteries offer the high discharge rates needed for competition aircraft, ducted fan systems, and other high current drain applications. If you are serious about the battery requirements for your electric power system, the X-Caliber Black Knight series will meet your needs.

As a bonus feature, X-Caliber batteries include all the various battery parameters right on the label! No more wondering about how much they weigh, or what discharge rate they can handle, it is all printed right there for you. Included on the label are the following specifications: Cell Count, Pack Voltage, mah Capacity Rating, Discharge Rates, Discharge Currents, Charge Rate, Battery Size in both inches and millimeters, and Battery Weight in both ounces and grams.

All X-Caliber batteries are factory matched, and include a standard balance plug in addition to the hi-flex silicone insulated power leads. So for a combination of quality, performance and value that is second to none, choose X-Caliber Lithium Polymer batteries for your next model.