The 18-volt Worx GT WG151 (*Est. $120) and the WG151.5 (*Est. $130) , which comes with a half-hour battery charger, have similar features to the Worx GT150 (*Est. $60) , but with a faster motor. The Lithium-ion (Li-ion) batteries this trimmer runs on are more environmentally friendly than the more common nickel-cadmium (Ni-Cd) batteries, and they hold their charge better between uses. They also weigh less, reducing the WG151's weight to a mere 5.3 pounds.
Good ergonomics, quiet operation, and ease of use make these Worx string trimmers a good buy if you don't need a lot of power, according to reviewers. However, some owners complain of poor battery life and say that getting service from Worx is a hassle. We found better reviews overall for the battery-powered Black & Decker NST2118 (*Est. $85) .
We found the best comparison review of the Worx GT WG151 at ConsumerReports.org, where gas, propane and corded and cordless electric trimmers are ranked based on objective testing. Popular Mechanics compares the Worx GT WG151 to a propane-powered and a gas-powered string trimmer. We also saw reviews based on users' experiences at Amazon.com, Lowes.com and the National Home Gardening Club.
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Editors include the Worx GT WG151 among the 16 cordless string trimmers they subject to detailed testing. Each trimmer is rated on its performance at trimming, edging and taking down tall weeds, as well as overall handling and ease of use
Review: String Trimmers, Editors of ConsumerReports.org, Updated May 2012
Three trimmers with differing fuel types are tested in this review. The Worx GT WG151 is the overall winner, with great ergonomics, good power and low noise. It's not the best for tackling weeds or wet grass, however.
Review: Which Kind of Fuel Is Best for Lawn String Trimmers?, Doug Mahoney, Oct. 7, 2009
We found more than 380 reviews here for the Worx GT WG151.5 (with quick charger) and another 150-plus for the basic Worx GT WG151. Both models earn an overall rating of 3 stars out of 5 from users. Owners say this lightweight trimmer has sufficient power for home use, but there are many complaints about short battery life and poor customer service from Worx.
Review: WORX GT WG151.5 18-Volt Lithium Ion Cordless Electric String Trimmer/Edger With Quick Charger, Contributors to Amazon.com
The Worx GT WG151 earns an overall rating of 3.3 stars out of 5 from about 100 users at Lowes.com. Users are divided on the subject of this trimmer's durability, heaping it with both praise and criticism. However, they generally agree that the trimmer is lightweight and easy to use, but battery life is poor.
Review: WORX 10" 18-Volt Cordless String Trimmer and Edger, Contributors to Lowes.com
Testers who have used the Worx GT WG151 in their own yards give it an overall rating of 8.9 points out of 10. However, the write-up is very short and may be biased, since the manufacturer supplies the products to be tested.
Review: WORX GT Trimmer and Edger, Contributors to GardeningClub.com