A Look at the Earthwise LST10012 Cordless Electric String Trimmer (Review)


(OutdoorGardenLiving)- The Earthwise LST10012 powers on an 18 Volt Lithium Ion battery, with a rating of 2.6 amp/hr- about two times the amp most other trimmer manufactures equip on their tools.

A better alternative to gas, lead acid and Ni-cad batteries

The biggest benefit of using the Earthwise LST10012 is the rechargeable ion lithium battery it operates on, rather than Ni-cad and lead acid batteries which are more in weight on a trimmer and gas fuel becomes an unnecessary pollutant.

-These environmentally-friendly batteries maintain their peak power through the duration of their charge.

Recharging the battery should take about 40 minutes based on the ion batteries’ 2.6 amp/hr rating, but usually takes anywhere from <30 minutes to 1 1/2 hours.


  • No fumes from gas and, no cords to plug into an outlet
  • Lightweight
  • Easy to assemble
  • People with varying height can adjust the tube length and handle to accommodate their position
  • The trimmer balances out well and is light enough to maneuver and cut in awkward spots


  • Only comes with one battery
  • The original string packaged with the Earthwise has a tendency to seize up when trimming, and break away when hitting harder surfaces like rock. Found to be successful is replacing the string with a reputed commercial brand string
  • Few have proclaimed the battery arrived defective with their shipment. Customer service has proved resilient in these instances, promptly delivering a new battery in short order

Features of the Earthwise LST10012 Cordless Electric String Trimmer

-2.6 AH LI-ion battery with 18 V- gives the Trimmer power of 7,800 RPM
-standard .065 inch diameter of line – single auto line feed
Upper Handle is able to rotate 180 degrees with an edging function
-Adjustable cutting head with 3 positions
-possible cutting angles from 0 (straight) to 30 and 45 degrees. This is a nice advantage, as changing the angle gives you the ability to edge along sidewalks and other crevices

Adjustable telescopic handle for height adaptation
-Edge guard flips down to minimize flying debris
Lock off switch to safeguard from accidental starting

Overall, you may not get the ‘umph’ and duration of a regular gas-powered edger when trimming a field lengthy/weighed down with weeds and grass, but this cordless LST10012 makes up for it with it’s lightweight, cord- and gas-free, and quiet nature.


Where to Find the Best Price
Amazon invariably has the best price online for these trimmers, so I would check there first.
Update June 2015: It appears the LST10012 has been discontinued.  See below for models that are comparable.

Comparable models
The Earthwise CST00012– High reviews; almost half the price of what the LST10012 is and 0.8 pounds lighter, with the exact same 12 inch cutting path and 18 volts of power, but uses a NiCad battery rather than the favorable lithium ion

My personal preference: The Black & Decker LST220– Same online price, trustworthy brand.  Reflects key features of the LST10012 and has an additional 2 volts in it’s lithium ion battery, and also weighs a touch less at 8.7 pounds.

If you’re still on the fence about the Earthwise LST10012, then check out the GreenWorks 21072 cordless trimmer. A bit more in price, but it’s also cordless and has 20V of power- two more volts compared to the LST10012.

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It all started with a trip to my Grandma's hobby farm in Nevis, MN tilling up her garden. The purpose of this site is to help with the frustration of choosing the perfect gear for your lawn or garden. It's grown to be so much more than that! No, you won't find any lawn or garden equipment being sold here. We just research and write about these products, giving you our opinion on anything from BBQ grills to grass shears!

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