Core CGT400 CGTSD Gasless Powered Trimmer
The Core CGT400 CGTSD Gasless Powered Trimmer looks like a gas powered string trimmer, but don't let looks fool you. This cordless has more torque than a 25cc gas powered model and features the longest run time on this list at about 70 minutes of time. It comes with a dual mode power switch; one setting for the longest run time and one setting for the most power delivery.
At maximum power, this trimmer will slice through weeds like a hot knife through butter. You'll get up to 70 minutes of run time on one charge, and a cutting swath that is 33 percent larger than any others on this list. While weighing in at a heavy 11 pounds, it does come with a whopping 5 year warranty. If you have a large property with a lot of tall weeds (or if you want bragging rights about your cordless string trimmer), then this is the cordless trimmer you want.