Metabo 685301000 12v Basic Set Inc 2x 4.0Ah LiHD Batteries & ASC 55 Charger The Metabo 685301000 set consists of the SC 30 Charger and 2 x 12v 4.0Ah LiHD batteries. These battery packs have Metabo\'s Ultra-M technology for longer life, and have a capacity display so you always know how much charge is left. This handy kit gives you everything you need to start using your Metabo tools.  Both the batteries and the charger in this set feature Metabo\'s \'AIR COOLED\' function. This is their patented principle based on air-cooling the battery pack during the charging process. The battery packs are gently cooled down to the required charging temperature, and then during the charging process are constantly maintained at optimum temperature. With this principle, you get a higher tool life of the battery packs and up to 30% shorter total charging time. 4.0AH LIHD BATTERY  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 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 SPECIFICATION Battery Pack Voltage: 12v Capacity of Battery Pack: 4.0 Ah ASC 55 CHARGER FEATURES Monitored charging with microcontroller Battery diagnosis Charge time approximately 30 minutes at 1.5 Ah \"AIR COOLED\" function For charging all Li-Power Compact, Li-Power Plus, and Li-Power Extreme battery packs For charging all Li-Ion and LiHD slide-on battery packs (12 V - 36 V) with adapted battery pack charging current Charger switches to compensation charge: to conserve the capacity, the battery pack is charged for 1 second every 45 seconds with 2.5 ampere SPECIFICATION Mains Frequency: 50 - 60 Hz Mains Voltage: 240v