2x 4,0 LiHD battery for ultimate performance and extremely long use with minimum temperature change Intelligent battery management for long-lasting battery Patented “AIR COOLED“ charging technology Permanent electronic Electronic Single Cell Protection (ESCP) when charging, for particularly long life Processor-controlled charge and discharge management Capacity display to permanently monitor charge status Can be stored for long periods of time with almost no self-discharge One battery pack for every application. 100% compatible with all 18 V machines and chargers from CAS partners 1 AKKU-STATION 12-36 for monitored charging with microcontroller Battery monitoring Charge time approximately 30 minutes at 1.5 Ah "AIR COOLED" function To charge all Li-Ion and LiHD slide-on battery packs (12 V-36 V) with adjusted battery pack charging power Charger switches to compensation charge: to conserve capacity, the battery pack is charged for 1 second every 45 seconds with 2.5 ampere "AIR COOLED" function: the patented principle is 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 constantly maintained at optimum temperature during the charging process. This principle allows a higher tool life of the battery packs and up to 30% shorter total charging time to be achieved weight per battery: 585g Delivery 2 pcs. AKKU 18-4,0-LiHD, 1 pcs. AKKU-STATION 12-36