More than just a fancy name. TURNIGY nano-tech lithium polymer batteries are built with an LiCo  nano-technology substrate complex greatly improving power transfer making the oxidation/reduction reaction more efficient, this helps electrons pass more freely from anode to cathode with less internal impedance. In short; less voltage sag and a higher discharge rate than a similar density lithium polymer (non nano-tech) battery. For those that love graphs, it means a straighter, longer curve. For pilots it spells stronger throttle punches and unreal straight-up performance. Excellent news for 3D pilots!   Unfortunately with other big brands; numbers, ratings and graphs can be fudged. Rest assured, TURNIGY nano-techs are the real deal, delivering unparalleled performance! Spec. Capacity: 5000mAh Voltage: 4S1P / 4 Cell / 14.8V Discharge: 25C Constant / 50C Burst Weight: 523g (including wire, plug & case) Dimensions: 159x49x33mm Balance Plug: JST-XH Discharge Plug: 4mm bullet-connector   Capacity(mAh) 5000 Config(s) 4 Discharge(c) 25 Weight(g) 523 Max Charge Rate (C) 5 Length-A(mm) 159 Height-B(mm) 49 Width-C(mm) 33