STIHL RCA 20 HANDHELD PRESSURE CLEANERSTIHL RCA 20 HANDHELD PRESSURE CLEANER AS Battery System The compact, lightweight STIHL RCA 20 battery handheld pressure cleaner is ideal for smaller cleaning tasks around the home and for mobile use on the go. It works with lithium ion batteries from the STIHL AS System. The STIHL RCA 20 can be used independently of mains power and water connections. If there is no water connection nearby, you can use water from e. g. a water bucket via the vacuum