Dewalt keeps their quality fairly consistent across the board, but there are a few features you need to be on the lookout for. First of all is the cutting path. You’ll notice on this list that some models features a 13”, up to a 15”. That refers to the circumference, not side-to-side. Keep this in mind; if you have a bigger yard, that 2” marginal difference could be super helpful.
Next look at the battery voltage. Electric weed eaters go from 20V to 60V (at least on this list), and the more volts you have, the longer your battery life is. That also depends on the Ah rating (generally between 3.0 and 6.0), because that determines how fast it uses the battery power. That’s why our top pick has a 60V battery and 3.0 Ah motor: it’s long-lasting and powerful enough to get the tough stuff done.
Power and performance are the two major functions to look for, but let’s not forget user interface. These features are smaller, but look out for periscoping poles, durable and comforting grips and wider guards to protect you from grass and weed backlash.