ISDT K1 100W AC / 250W DC Dual Port 2-6S Smart ChargerISDT K1 Dual Smart Charger The iSDT K1 is a versatile and affordable smart charger that can handle both AC and DC inputs. It features dual channel charging, allowing you to charge two LiPo batteries simultaneously. The K1 comes packed with great features, including a high resolution color LCD screen, input safety features, and upgradable firmware with scOS 2. 0 software for ease of use. The charger also includes a USB port for firmware updates,