FAST 18V CHARGING: Charges a spent bosch 18v 4.0 ah battery to 80% in 32 minutes and to 100% in 50 minutes 8-AMP CHARGING CURRENT: Delivers 4x the charging current compared to the gal18v-20 standard charger 6-BAY CHARGING CONVENIENCE: Allows users to sequentially charge six bosch 18v batteries REGULATED DUAL-MODE CHARGING: Charges the first 80% fast, while the remaining 20% charges in long-life mode ACTIVE AIR-COOLING: Features a charger-cooling fan that optimizes charging ERROR INDICATOR: Alerts the user if charging is interrupted due to temperature and/or battery failures FIVE-LED BATTERY-STATUS INDICATOR: Provides charging status CORD WRAP AND CARRYING HANDLE: Offers storage and transportation versatility AMPSHARE SYSTEM: Battery system designed to be multi-brand compatible across many cordless products to make managing your work day easier AMPSHARE SYSTEM COMPATIBILITY: 18V batteries and chargers are compatible with bosch 18v power tools and a growing list of cordless products from ampshare brands