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. -Powerful 50C continuous discharge rating to deliver high performance and longevity. -Impact-resistant ABS plastic hard case. -No soldering is required, equipped with IC3 and IC5 Connectors that are compatible with EC3 and EC5. The Smart Technology Power stage Bundle is a one-box solution for vehicles requiring top performance. Designed with the simplicity of Smart Technology, this bundle includes (1) 5000mAh 2S 50C Smart LiPo batteries, and (1) S150 Smart AC/DC Charger. SPEKTRUM SMART BATTERY 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, the 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 Spektrum Smart 50C LiPos are ready to drop into your RC car or boat for better performance, power, and reliability. These battery packs are a great upgrade for those looking to get more punch and off-the-line power on nearly any setup. SPEKTRUM SMART CHARGER With the compact S150 AC Mini Smart Charger, modelers of all experience levels can enjoy the charging advantages of innovative Spektrum Smart technology. This 50-watt charger brings advanced Smart charging capabilities and features to an affordable platform that features an easy-to-use, one-button interface. When used with Spektrum Smart batteries with an IC3 or IC5 connector, the S150 uploads charging data from each battery's integrated memory chip. That pack-specific data helps you evaluate battery health and makes charging a snap €” because the S150 can read and make the correct chemistry setting automatically. The S150 AC Mini Smart Charger is compatible with LiPo, Lilon, LiHV, and NiMH battery types.