Black & Decker String Trimmer

When it comes to maintaining your yard, a reliable string trimmer is an essential tool. I recently had the opportunity to use Black & Decker's LST540B String Trimmer, and I wanted to share my experience with it. This cordless string trimmer boasts a brushless motor for enhanced power and runtime, and it’s designed to tackle grass and weeds efficiently.

First impressions are crucial, and the LST540B made a solid one with its sleek design and lightweight build. Weighing in at just 7.5 pounds, it’s easy to handle, which is a significant plus for anyone who has spent hours wrestling with heavier, more cumbersome trimmers. The adjustable telescoping aluminum pole is another thoughtful feature, allowing users to customize the length for comfortable use regardless of height.

The brushless motor technology is one of the standout features of this trimmer. It promises improved power and runtime, and in practice, it delivers. The motor runs smoothly and provides consistent power, making quick work of overgrown grass and stubborn weeds. I found the POWERDRIVE Transmission particularly effective in delivering power efficiently, ensuring that the motor doesn’t bog down even when tackling tougher jobs.

One feature that deserves special mention is the Automatic Feed Spool (AFS). This system automatically feeds the trimmer line as needed, eliminating the need for bumping or manual adjustments. In theory, this should make for a hassle-free trimming experience. However, I noticed that the AFS system can be a bit too generous with the line, resulting in frequent replacements. While convenient, the high line consumption can become costly over time.

Switching between trimming and edging is seamless with the LST540B. A simple button press converts the tool from a trimmer to an edger, and the 13-inch cutting swath covers a good area, making the job quicker. The variable speed trigger is a nice touch, allowing for control over power and runtime, especially useful when working in different areas of the yard.

Battery life is a critical consideration for any cordless tool, and the 40V MAX* Lithium Ion battery used in this trimmer is a mixed bag. On the plus side, the battery provides ample power to get through most tasks, and it charges relatively quickly. However, for larger yards or more extensive trimming sessions, a single battery might not be sufficient. Investing in a second battery could be a wise move to ensure uninterrupted work.

Durability is where the LST540B has room for improvement. While the brushless motor is robust, the overall build quality of the trimmer isn't as sturdy as one might hope. During my usage, I encountered a few concerns with the motor locking up and overheating, which, in some cases, led to the motor failing altogether. This is disappointing, especially considering Black & Decker’s reputation for reliable yard tools. The three-year limited warranty does provide some reassurance, but frequent trips to the repair center can be frustrating.

Another aspect worth noting is the noise level. The LST540B operates relatively quietly compared to gas-powered models, which is a relief for both the user and the neighbors. This makes it a suitable option for early morning or late evening yard work without causing a disturbance.

In terms of ease of use, the LST540B scores high. The lightweight design, adjustable shaft, and automatic line feed combine to make it user-friendly. Even for someone who isn’t particularly tech-savvy, assembling and operating the trimmer is straightforward. The included manual, although not the most well-organized, provides clear instructions that are easy to follow.

Overall, my experience with the Black & Decker LST540B String Trimmer has been a blend of highs and lows. On one hand, the brushless motor and POWERDRIVE Transmission offer impressive performance, and the lightweight, ergonomic design makes it easy to use. The convenience of the Automatic Feed Spool and the quick conversion from trimmer to edger add to its appeal.

However, the durability issues and the high line consumption are significant drawbacks. While the battery life is decent, it may not be sufficient for larger yards without an additional battery. For those with smaller yards or less intensive trimming needs, the LST540B could be a great fit. It’s powerful enough to handle most residential tasks and is easy to maneuver and operate.

Would I recommend the Black & Decker LST540B String Trimmer? If you’re looking for a lightweight, cordless trimmer with good power and ease of use, and you don’t mind investing in extra line and possibly an additional battery, then yes, it’s a solid choice. However, if durability and long-term reliability are your top priorities, you might want to consider other options or wait for an updated model that addresses these issues. The LST540B has the potential to be an excellent tool, but it falls short in a few critical areas that could affect its longevity and cost-effectiveness in the long run.