What battery voltage should I look for?

20V class trimmers (Black+Decker, WORX WG163, MZK) are best for small yards and light grass; reviewers consistently flag them as underpowered for thick weeds. 40V (WORX WG183) is a middle tier. For larger properties or thicker growth, the 56V EGO and 60V Greenworks platforms get the strongest cross-source endorsements.