Features LiHD battery packs for ultimate performance and extremely long application with minimal temperature generation Ultra M technology: Intelligent battery management for long-lasting battery packs with a 3 year guarantee Patented “AIR COOLED“ charging technology Permanent Electronic Single Cell Protection (ESCP) when charging, for particularly long life. Processor-controlled charge and discharge management Capacity display with almost no self-discharge No memory effect For charging all Li-Ion and LiHD slide-on battery packs (12 V - 36 V) with adapted battery pack charging current Patented "AIR COOLED" charging technology: battery pack cooling during charging for significantly reduced charging times Very low stand-by input power Processor-controlled charging management for gentle charging and maximum number of charging cycles One charger for everything. To charge all battery packs of the CAS - Cordless Alliance System Charge time approximately 30 minutes at 18v 4Ah; approximately 60 minutes at 8Ah Specification Battery Pack Voltage: 18 V Capacity of Battery Pack: 5.5 Ah Mains Voltage: 230 - 240 V Mains Frequency: 50/60 Hz Max Charging Current: 3 / 4 A Battery Voltage(s): 12 / 14.4 / 18 / 36v Charging time:- 18V 4.0Ah: 30 mins 18V 5.2Ah: 39 mins 18V 6.2Ah: 47 mins 18V 7.0Ah: 53 mins 18V 8.0Ah: 60 mins Standard Equipment 2x 5.5Ah 18v LiHD Li-Ion Batteries 1x ASC 145 Multi Voltage Charger Warranty click above logo for more details or to register you purchase online