Industry-leading innovation from SKIL charges faster and more efficiently than ever. Auto PWRJUMP charges the battery from zero to 30% in just 15 minutes, and fully charges within 60 minutes (based on 2.5Ah battery). The charger manages each cell in the battery to control temperature and maximize battery life. Fueled by the performance and innovation of the SKIL PWRCORE 40 System, the Auto PWRJUMP 40 Volt Charger will ensure your tools are ready to go. 15-MINUTE CHARGING - Auto PWRJUMP charges the battery from 0 to 30% in just 15 minutes (based on a 2.5Ah battery). LED STATUS LIGHTS - Show charge status of the battery, so you know how much time is available. PWRCORE 40 SYSTEM - Charges all SKIL 40V lithium batteries.