Updated September 16, 2026. Disclosure: As an Amazon Associate, we earn from qualifying purchases.
Quick answer: The BLACK+DECKER LSTE525 is a practical budget trimmer for small yards. It has a 12-inch cutting path, converts to a wheeled edger, and includes two compact batteries. EASYFEED advances line from a button rather than a bump head. Its limits are modest power, thin 0.065-inch line, and a slow included charger.
Our verdict: Best for routine grass trimming and sidewalk edging on small suburban lots. It is a poor match for thick, neglected weeds or long fence lines where the larger EGO, Greenworks, or RYOBI models will finish faster.
Check the BLACK+DECKER LSTE525 price on Amazon →
Research note: This is a research-based review. We have not personally tested this string trimmer. We reviewed current manufacturer specifications, the owner manual where available, warranty terms, kit contents, battery compatibility, and current owner-feedback patterns.
Compare this model with the other picks in our best cordless string trimmers guide, or browse the electric string trimmer hub.
BLACK+DECKER LSTE525 specifications
| Battery platform | BLACK+DECKER 20V MAX; 18V nominal under load |
|---|---|
| Cutting path | 12 inches |
| Line | 0.065-inch round line; AF-100 spool |
| Line feed | EASYFEED push-button advance |
| Speed | Two settings; up to 7,200 RPM |
| Edging | Rotates into wheeled-edger position |
| Listed product weight | 8.8 lb on the current product page |
| Included kit | Two 1.5Ah batteries, charger, AF-100 spool, guard |
| Listed charge time | 480 minutes |
| Warranty | 2-year limited warranty |
Best for
- Small, regularly maintained lawns.
- Light grass around beds, trees, fences, and mailboxes.
- Homeowners who want a guide wheel for cleaner sidewalk edges.
- Existing BLACK+DECKER 20V MAX owners.
Consider another model if
- Dense or waist-high weeds.
- Large properties with long trimming sessions.
- Anyone who needs attachment capability.
- Buyers who expect the power and line durability of a 40V or 56V trimmer.
A useful small-yard design
The LSTE525’s strongest argument is convenience. The shaft and auxiliary handle adjust, the head rotates for edging, and the guide wheel helps follow a hard edge. A 12-inch swath is slower in open areas than a 16- or 17-inch head, but it is easier to place around garden borders and play equipment. Two small batteries allow one pack to cool or charge while the other is in use.
EASYFEED and replacement line
EASYFEED advances line when you press a button on the handle. The manual specifically warns against bumping the head and calls for 0.065-inch round line, with BLACK+DECKER’s AF-100 spool recommended. Thicker or incorrectly shaped line can interfere with the feed system. Prewound spools cost more than bulk line, so include that recurring expense when comparing this inexpensive kit.
Power and runtime expectations
The two-speed control lets you favor runtime for routine grass or select more power for heavier spots. This remains a compact 20V tool with thin line. It suits frequent maintenance better than reclaiming an overgrown property. BLACK+DECKER does not publish a simple runtime figure for this kit, and real runtime depends heavily on speed and load. The two 1.5Ah batteries extend a session through swapping rather than providing one large pack.
The charger is the clearest compromise
BLACK+DECKER lists a 480-minute charge time for the included charging setup. That is much slower than the chargers bundled with the premium tools in this comparison. Charging both batteries ahead of time makes the kit workable for small yards, but buyers who trim frequently should plan around the delay or investigate a compatible faster charger from the manufacturer.
Pros and cons
Pros
- Affordable complete kit
- Two batteries included
- Wheeled edging mode
- Push-button line advance
- Adjustable shaft and handle
- Compact 12-inch head is easy to place
Cons
- Limited for heavy weeds
- Slow listed charging time
- Narrower swath takes more passes
- 0.065-inch line wears faster than heavier line
- No brushless motor or attachment capability
Final recommendation
Best for routine grass trimming and sidewalk edging on small suburban lots. It is a poor match for thick, neglected weeds or long fence lines where the larger EGO, Greenworks, or RYOBI models will finish faster.
Frequently asked questions
Is the LSTE525 a trimmer and an edger?
Yes. The head rotates into an edging position and a wheel guides the tool along sidewalks and driveways.
What replacement line does it use?
The manual specifies 0.065-inch round line and recommends the BLACK+DECKER AF-100 spool.
Does it include two batteries?
Yes. The current LSTE525 kit includes two 1.5Ah 20V MAX batteries and a charger.
Is the LSTE525 suitable for thick weeds?
It is designed primarily for grass and ordinary light weeds. Its 20V platform and thin line make it less suitable for dense, woody, or heavily overgrown areas.
How long does charging take?
BLACK+DECKER lists 480 minutes for the included charging setup. Charge both batteries before a larger job.
Sources and review method
Specifications and package details can change. Match the exact model number and included-items list before ordering. Manufacturer runtime and noise figures are conditional claims, not guarantees.
- BLACK+DECKER LSTE525 product page
- BLACK+DECKER LSTE523/LSTE525 manual
- BLACK+DECKER replacement spool information
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