The Metabo HPT 36V MultiVolt™ Portable Rebar Bender/Cutter (VB3616DA) (4.0Ah x 2 + Charger) is the industry's first cordless rebar bender/cutter, based on the AC powered rebar bender/cutter, the VB16Y. The VB3616DA's cutting and bending performance is even greater than that of the VB16Y, thanks to its DC fan-cooled brushless motor and ultra-capable MultiVolt™ 4.0Ah battery. This tool can be used cordless OR corded when paired with the ET36A AC Adapter (sold separately). Metabo HPT introduces MutliVolt™: a revolutionary power tool platform offering dual power source technology. Cordless or corded, MultiVolt gives you the choice to operate all MultiVolt tools either with a MultiVolt 36V battery or MultiVolt AC Adapter with cord. Get the power of a corded tool with the freedom of cordless. Also, no longer will production have to stop due to a drained battery. Just connect the AC Adapter with cord and keep working while the battery charges. You no longer need both a cordless and corded tool - MultiVolt™ is a one tool solution!