Spektrum 14.8V 4000mAh 4S 30C Smart LiPo Battery: IC3, SPMX40004S30

Key Features: Integrated microchip stores unique parameters for each battery Smart discharge allows batteries to automatically discharge to a safe voltage Save time and hassle, while improving battery life Protective outer metal alloy sheet helps dissipate heat, hold battery shape, and increase durability No soldering required, equipped with IC3 and IC5 Connectors that are compatible with EC3 and EC5 Feature Overview: You'll never have to set charge preferences for a Spektrum Smart battery until you want to. When a Spektrum Smart LiPo battery is connected to a Spektrum Smart charger, unique parameters and health of that Smart LiPo battery upload from the Smart memory microchip integrated into the battery. Through the charger, you can view and set preferences, such as charge rates, so that all you have to do to charge the pack every time is press the charger ''Start'' button. Smart technology takes care of the rest. Our new Spektrum Smart 30C LiPos come in a variety of popular sizes and are ready to drop into your RC aircraft for maximum performance, power, and reliability. These are the perfect packs for high performance models and power systems and a great upgrade to get more punch and power on nearly any setup. Spektrum Smart LiPo Batteries Store Unique Data, Such As:: Battery Brand Battery Type Battery Capacity Battery C Rating Individual Cell Voltage Battery Temperature Charge/Discharge Cycles Spektrum Smart LiPo batteries also maintain an error log including the number of over-heat, over-discharge and over-charge incidents which can be helpful data in assuring that the battery you've chosen is right for the application. A Smart Battery uploads its charge parameters to a Spektrum Smart Charger automatically making charging as simple as pressing the ''Start'' button