STIHL HSA 40 BATTERY HEDGE TRIMMERSTIHL HSA 40 BATTERY HEDGE TRIMMER AS Battery System The STIHL HSA 40 battery hedge trimmer impresses with its low weight and quiet operation for hedge trimming and garden maintenance in domestic settings. The ergonomic design, balance and compact construction make work easy. This set includes the HSA 40 battery hedge trimmer with 2 STIHL AS 2 lithium ion batteries and the STIHL AL 1 standard charger as standard from the AS System battery range.