As an Amazon Associate I earn from qualifying purchases.Updated: March 27, 2026
The Battery in your Black+Decker LST140 powers the trimmer motor. Over time, battery capacity naturally degrades, leading to reduced runtime and performance. Delaying replacement can result in incomplete cuts and ultimately damage other components due to strain from a struggling power source.
$18.99$21.99Save $3.00 (14%)
Price from Amazon • As an Amazon Associate I earn from qualifying purchases.
OEM vs aftermarket: Original Equipment Manufacturer (OEM) batteries are made by Black+Decker and offer guaranteed compatibility but may be pricier. Aftermarket options are often more affordable but double-check reviews for fit and performance on your LST140 model.
Installation: Generally involves a simple snap-in or slide-on mechanism, with instructions provided in the device manual or on packaging.
Replacement schedule: every 18 months
Compatibility warning: always verify part number matches your exact model before ordering
Pros & Cons
Pros
✓ Restores device to original performance without buying a new unit
✓ Significantly cheaper than a full device replacement
✓ Multiple options available from OEM and aftermarket sellers
Cons
✗ OEM parts cost more than third-party alternatives
✗ Wrong part number will not fit — model verification is essential
Common Use Cases
Scheduled maintenance on the every 18 months replacement cycle
Performance restoration after noticing reduced output or efficiency
Preventive replacement before a worn part causes secondary damage
Who Should Buy This
This replacement Battery is for the owner of a Black+Decker LST140 whose trimmer's performance has degraded and wants to extend its lifespan.
Not ideal for: If your LST140 is experiencing other malfunctions beyond battery life, a full device replacement might be more practical.
Good to Know Before Buying
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Always confirm your exact model number (LST140) before ordering. Part numbers vary between model variants and production years. Check the label on your device or original documentation to be sure.
Frequently Asked Questions
What is the part number for the Black+Decker LST140 Battery?
The part number is BD1200. Always verify this matches your exact model (LST140) before ordering, as similar models may use different parts.
How often should I replace the Battery on my Black+Decker LST140?
every 18 months
Will aftermarket Battery replacements work in my Black+Decker LST140?
Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model LST140 and check buyer reviews for fit confirmation before purchasing.
Prices change frequently. See the latest deal on Amazon.