Up to 1 hour of runtime when using dual mode switch in run-time mode. 2.0 Amp hour extended runtime lithium ion battery pack for 2X more run time per battery pack. Runtime Extension Technology with dual mode accelerator switch for high performance or longer run time. Patented PowerDrive(TM) Transmission prevents bogging down in heavy grass and weeds. The Automatic feed spool ensures continuous work without bumping and having to stop to adjust the spool. Includes: (1) 2.0Amp/H LBXR2020-OPE battery, LB2X4020-OPE 20V MAX 2X Battery, (1) Charger - LCS1620, (1) AF-100 Spool, (1) Guard, (1) Handle. 2-Year warranty.