Amazon has EGO Power+ 56V 16″ Cordless String Trimmer w/ 4.0Ah Battery and Charger (ST1623T) + EGO Power+ 56V 2.5Ah Battery (BA1400T) on sale for $299.99. Shipping is free.

Features:

• 60-minutes of continuous cut time when used with the included EGO 56V 4.0Ah ARC Lithium battery
• Includes an additional EGO Power+ BA1400T 56-Volt 2.5 Ah battery with upgraded fuel gauge (3rd generation)
• Carbon fiber shaft w/ telescopic design allows to quickly adjust the shaft length
• Digital variable speed, a high-efficiency brushless motor, and .095″ professional cutting line
• Auto-sensing technology monitors and feeds the length of the line for a continuous 16″ cutting swath delivering non-stop high-performance trimming
• POWERLOAD technology automatically winds trimmer line, as easy as feeding the line into the head and pressing a button
• 5-Year Tool Warranty, 3-Year Battery Warranty