Spektrum RC 3S Smart LiPo Battery Pack w/IC3 Connector (11.1V/4000mAh)

This is the Spektrum 4000mAh 3S 11.1V 30C Smart LiPo Battery with IC3 Plug.  This is the stock replacement battery for the Apprentice STS 1.5m trainer, and works well in many other electric airplanes as well.  The IC3 plug is compatible with EC3 plugs as well. Features: Spektrum Smart Technology Makes Charging and Maintaining Batteries Easy Integrated Microchip Stores Unique Parameters for Each Battery New IC3 Connectors are Compatible with EC3 Save Time and Hassle, while Improving Battery Life Smart Discharge Allows Batteries to Automatically Discharge to a Safe Voltage Product Specifications Application Aircraft Balance Lead Length 1.37" (35mm) Battery Balance Connector JST_XH Battery Capacity 4000-4999mAh Battery Type LiPo (3.7V per cell) Battery Voltage 11.1V Capacity 4000mAh Charge Protection Circuitry Yes Connector Type IC3 Discharge Lead Length 2.36" (60 mm) Hard Case No Maximum Burst Discharge Rate 30C Maximum Charge Current 20A Maximum Cha