Drivers enjoy even more Smart advantages when they choose the Spektrum™ 4000mAh LiPo 30C Smart LiPo Battery to power their vehicles. These features make these LiPo packs, featuring a 30C continuous discharge rating for performance and longevity, even simpler and safer to use together with your Smart charger. With Spektrum Smart LiPo batteries, charging parameters and performance data are stored and uploaded automatically to Smart chargers with a single IC5® connection!