Metabo 18V Industrial Fan COMPLETE PORTABILITY: Eliminate the cord, not the power The advanced and intelligent cordless technology, featuring AIR-COOLED charging, Electronic Single Cell Protection, Overload protection ULTRA-M COMPACT BATTERY: Metabo's Ultra-M compact 2.0Ah battery pack with more runtime and power than standard compact batteries 4-LED CAPACITY INDICATOR: Shows battery charge status PATENTED AIR-COOLED CHARGER: Quickly cools battery allowing for up to 30% faster charge times while significantly increasing battery life