ARRIS 5 Pairs Amass XT90-S Anti-Spark Male Female Connector for Battery, ESC and Charger Lead Amass XT90-S Plug is a upgrade version of the XT90 connector. The main feature of this plug is anti-spark. They integrated the resistance into this small plug to prevent the spark. XT90 adopts the 4.5mm banana plug. Current Breakdown: 90A (continuous), 120A (peak). Adopts 4.5mm banana plug, upgrade version - Light weight, small size, high current indurance performance.