Best Battery String Trimmers 2025: Top Picks Compared

Battery trimmers have finally killed the argument for gas on residential lots. The question now is which voltage, which ecosystem, and which one won't frustrate you after a full season. Voltage numbers get all the attention, but the spec that actually separates good trimmers from regrettable ones is cutting width paired with real run time — and that's where a few of these stumble.

Quick Picks

• Overall Winner: EGO Power+ 56V 15" — best power and cutting width in the battery category, 5-year warranty seals it
• Best Value / Budget: Ryobi One+ 18V — lightest of the group at 4.5 lbs, great if you're already in the One+ ecosystem
• Skip It: Black & Decker LSTE525 — shortest warranty, no cutting width listed, not a serious tool for anything larger than a postage-stamp yard

The One to Beat: EGO Power+ 56V

EGO's 56V trimmer is the clear top pick for homeowners with a real yard. The 15-inch cutting width is the widest here, and EGO's ARC battery cells with fast-charge technology mean less time hunting for a charged pack mid-trim. The 5-year warranty is exceptional for this category — most competitors offer 2 or 3 years and move on. At 6.7 lbs it's not featherweight, but it's reasonable for the power it delivers. The investment is real, but EGO's ecosystem rewards loyalty: that same battery runs their mowers, blowers, and chainsaws.

Best Value: Ryobi One+ 18V

If you already own Ryobi One+ batteries — and a lot of homeowners do — this trimmer is a no-brainer add-on. At 4.5 lbs it's the lightest in this lineup by a full pound, which matters on a sloped lot or when you're trimming for 30-plus minutes. The 18V platform won't match EGO's raw power, so if you're dealing with thick grass or overgrown edges, you'll feel the ceiling. But for weekly maintenance on a tidy suburban yard, it's more than enough.

The Contenders

What Most Buyers Get Wrong

Everyone fixates on voltage. Higher voltage does generally mean more torque, but it tells you nothing about battery capacity (amp-hours) or how long the thing actually runs on a charge. A 56V trimmer with a small Ah battery will die faster than an 18V with a big one. Always check the Ah rating on the battery included — or the one you plan to pair it with. The other hidden cost: proprietary line cartridges. Some trimmers lock you into a specific bump-head refill system that costs twice what generic .065 line costs. Buy accordingly.