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RYOBI RY402110 leads for its wide swath and published kit runtime; other picks suit attachment use, STIHL and FLEXVOLT owners.
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RYOBI RY402110 leads for its wide swath and published kit runtime; other picks suit attachment use, STIHL and FLEXVOLT owners.

STIHL FSA 50 suits edging flexibility; FSA 70 R targets more demanding homeowner work, and FSA 57 is aimed at smaller lawns.
Our picks
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Official manufacturer image
Official manufacturer imageBest picks

RYOBI RY402110 leads for its wide swath and published kit runtime; other picks suit attachment use, STIHL and FLEXVOLT owners.

STIHL FSA 50 suits edging flexibility; FSA 70 R targets more demanding homeowner work, and FSA 57 is aimed at smaller lawns.

RYOBI offers a wide adjustable swath, while STIHL options cover edging conversion and smaller-lawn trimming.
Common questions
It varies by battery capacity and charger. Use the manual or manufacturer listing for the exact battery and charger combination; published times for one kit do not apply to all platforms.
Check the outlet, charger indicator, battery seating and temperature using the Kobalt manual. If the charger reports a fault or the pack is damaged, stop and contact manufacturer support.
Follow the battery and charger manual for storage and charging. Do not assume every platform supports indefinite charger storage.
Follow the manufacturer temperature guidance. If the pack is hot, allow it to cool within the permitted range before charging.