STIHL FSA 50 AK Battery Trimmer Kit (FA11 011 5719)

The STIHL FSA 50 AK Battery Trimmer Kit (FA11 011 5719) gives you the trimmer, battery and charger for tidying small lawns, garden beds and lawn edges. Adjust the shaft and loop handle to suit your working position, angle the head for awkward areas, then rotate it for neat vertical edging.

What's Included

• STIHL FSA 50 AK battery grass trimmer.
• AutoCut C 3-2 nylon-line mowing head.
• STIHL AK 10 battery.
• STIHL AL 101 standard charger.

Key Features

• 280mm cutting circle for home garden maintenance.
• Tool-free adjustment of shaft length and loop handle.
• Mowing head adjusts to three angles for slopes and harder-to-reach areas.
• Head rotates 90 degrees for lawn-edge trimming.
• Variable-speed trigger helps match the speed to the grass and conserve battery energy.
• AutoCut C 3-2 bump-feed head allows external line refilling without opening the housing.
• Flexible spacer bracket helps maintain clearance around plants and obstacles.
• Softgrip control handle and integrated hanging ring for comfortable handling and compact storage.
• Optional STIHL Smart Connector records operating hours through STIHL connected, sold separately.

Battery Options and Runtime

The recommended AK 10 battery and AL 101 charger are included. A spare AK 10 battery is available separately. For longer sessions between charges, choose the compatible AK 20 battery or AK 30 S battery, also sold separately. This machine uses STIHL AK batteries, not ALLPRO/AP or AS batteries.

• Included AK 10: up to 25 minutes with the line head; up to 50 minutes with the optional plastic-blade head.
• AK 20: up to 50 minutes with the line head; up to 100 minutes with the optional plastic-blade head.
• Legacy AK 30: up to 60 minutes with the line head; up to 120 minutes with the optional plastic-blade head.
• AK 30 S: up to 60 minutes with the line head.

Maximum runtime varies with grass density, cutting head, speed, technique and battery condition. The plastic-blade head is not included.

Maximum Coverage Guide

• AK 10: up to 125m² of grass or 625m of lawn edge per charge.
• AK 20: up to 250m² of grass or 1,250m of lawn edge per charge.
• AK 30 or AK 30 S: up to 300m² of grass or 1,500m of lawn edge per charge.

Coverage figures are maximum guides, not guaranteed results.

Optional Cutting Head and Replacement Blades

The STIHL PolyCut 3-2 mowing head (4009 710 2104) is an approved optional alternative with two moving plastic blades. Replacement PolyCut blades, eight-pack (4008 007 1000) are available separately. Up to six spare plastic blades can be stored on the machine.

Use only approved cutting equipment with the specified guard. Plastic-blade compatibility does not approve metal grass blades, brush knives, saw blades or a metal-blade fitting kit. Remove the battery before changing heads, refilling line, cleaning or servicing. Follow the manual for protective equipment, operating distances and permitted conditions.

Specifications

• Model: FSA 50.
• Kit part number: FA11 011 5719.
• SKU / MPN: FA110115719.
• Battery system: STIHL AK, 36V.
• Power consumption: 0.43kW.
• Power output: 0.30kW.
• Weight without battery: 2.9kg.
• Cutting circle: 280mm.
• Standard head: AutoCut C 3-2.
• Battery included: AK 10.
• Charger included: AL 101.
• Length without cutting tool: 148cm.
• Sound pressure level: 69dB(A).
• Sound power level: 82dB(A).

Noise figures depend on the specified test setup. Follow the manual for exposure guidance.

Already Own AK Batteries?

See the STIHL FSA 50 trimmer-only version (FA11 011 5700), supplied without a battery or charger, or browse our STIHL grass trimmers.