Capacity/Cells/Voltage: 2100mAh / 3S / 11.1V Max Cont. Discharge: 20C Max Burst Discharge: 40C Max Cont. Current: 42A Max Burst Current: 84A Weight Grams: 149 Dimensions: 20 x 34 x 104 Perfectly suited for micro indoor slow flyer, 3D parkflyer, giant-scale airplanes and everything in between Capable of continuous discharge rates up to 20C and burst discharge rates up to 40C, delivering higher voltage under typical and heavy loads and offering up to 20% more power than other batteries Capable of being charged safely at rates up to 3C (when using approved charger/balancer combinations) Cells are matched by internal resistance, capacity and voltage for maximum power delivery and cycle life with packs assembled by Thunder Power RC in Las Vegas, NV USA