Model No. STC1840 Discontinued

18V Li-Ion String Trimmer 4.0Ah

Part Of The 18v Lithium-ion System

One battery system, endless possibilities.

You can switch your 18v lithium-ion battery between over thirty cordless tools in the range. From drills and string trimmers to leaf blowers and circular saws, it’s the ultimate in versatility for all your DIY and garden projects.

See the 18v system in action.


Features + Benefits

  • Optimal Comfort - Easily adjustable second handle and telescopic tube for greater control and comfort.
  • Power Select Run Time Extender – Increase the power for tough overgrown areas or reduce the power for lighter tasks to extend the battery run time.
  • Up to 1 hour of run time* - 18V 4.0Ah Lithium battery for up to 60 minutes of fade free power, without the hassle of a cord.
  • Powered by E-Drive – High torque gear system powers through even the toughest overgrown areas quickly without clogging.
  • Trim ‘n’ Edge - Easily convert from trimming to edging mode by unlocking twisting the pole.
  • Precise Edging - Precision edging guide wheel for perfect lawn edges every time.
Black and Decker - 18V LiIon String Trimmer 40Ah - STC1840

Product Specs

Power Source Cordless
Garden Size Medium
Feed System Automatic Feed
Power Rating 18 V
Cutting Width 30 cm
Edging facility Edging Wheel
Battery Type Lithium-Ion
Battery Capacity 4.0 Ah
Battery Included 1
Charging Time 2 hours
Line cutting speed 5500-7200 rpm
Secondary handle Yes
Line diameter 1.6 mm
Line supplied 9 m
Adjustable Handle Yes
Area of cut 2500 m²
Telescopic shaft Yes
Telescopic distance 315 mm
Sound Power 92 dB(A)
Sound Pressure 76 dB(A)
Vibration 9 m/s²
Weight 4.7 kg
Replacement Spool A6481

18V Li-Ion String Trimmer 4.0Ah reviews verified by reevoo
Verified reviews of 18V Li-Ion String Trimmer 4.0Ah

out of 10

3 reviews

Ease of use
Build quality
Design and Ergonomics
Value for money
Overall rating
Scores 8.3 out of 10 based on 3 reviews
out of 10


Brisbane North Lakes AU Easy labor
Light weight and very easy to use - much preferred over petrol with same power
Confirmed purchase: 01 December 2016
Published on: 12 January 2017
out of 10


Coffs Harbour, NSW AU
Ease of starting
No fuel to worry about
Relatively ease to clean
Line breaks very easily
Rewinding line spool is an art
(cannot be overloaded and instructions indicate too much line)
Confirmed purchase: 02 April 2016
Published on: 19 April 2016