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BLACK+DECKER 20V MAX* String Trimmer / Edger, 12-Inch (LSTE525)

TLDR Review: BLACK+DECKER 20V MAX String Trimmer

By ShopSavvy Team

Published: May 14th, 2026

Pros

•Comes with two batteries, which extends usage time and reduces downtime
•Lightweight and easy to maneuver, especially for edging and trimming tasks
•Strong power performance, capable of handling thick weeds and long grass with ease
•Auto feed feature operates automatically, minimizing user errors
•Quick transition between trimming and edging positions enhances convenience
•Compatible with other Black & Decker batteries, allowing for versatile battery sharing
•Easy to assemble, with simple attachment of the guard and adjustable cutting line
•Performs reliably without noticeable weakness during use, especially when batteries are charged
•Effective at trimming along fences, sidewalks, and haro-reach areas
•Includes features like a wheel for steady edging around walls or fences

Cons

•Small capacity batteries require frequent recharging, which can be inconvenient for larger jobs
•Safety switch can stick or become hard to press over time, causing operational issues (noted in about 6 months of use)
•Trigger mechanism may wear down, requiring filing or replacement for smooth operation
•Repair and reassembly can be challenging, needing careful handling to avoid damage
•Safety switch design is sometimes inconvenient or problematic, with some users unable to bypass or modify it easily
•Longer battery recharge times (about 6 hours for full charge) may delay larger projects
•Batteries last approximately 20 minutes per full charge, limiting continuous use before swapping or recharging
•Heavy use on high speed can deplete battery quickly, especially without additional spare batteries

Bottom Line

This BLACK+DECKER 20V MAX* String Trimmer / Edger is a solid choice for small to medium-sized lawns, especially with its lightweight design, auto feed, and two included batteries that enhance mobility and convenience. However, the safety switch and battery longevity may pose challenges over time, and frequent recharging could become a hassle for larger projects. If you need a longer-lasting option or have more extensive yard work, you might want to consider a model with larger batteries or different durability features. For reliable, everyday yard maintenance, this trimmer offers a good balance of power and ease of use.

Lowest at Amazon

$99.00 at Amazon

Lowest at any Popular Retailer

$59.00 at VIP Outlet

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 62 retailers to give you the short version.