For fast charging all LiPOWER and LiHD slide-on battery packs (14.4 V - 36 V), Patented "AIR COOLED" charging technology: battery pack cooling during charging for significantly reduced charging times, High charging current for fast charging of the battery packs, Processor-controlled charging management for gentle charging and maximum number of charging cycles, 3-year warranty on all Metabo battery packs and chargers irrespective of the number of charging cycles, Many brands, one battery pack system: charger for charging all battery packs of the CAS brands: www.cordless-alliance-system.com