The voltage on this electric planer is 18 volts. There's no cord to restrict you, just make sure you've charged the battery.
From Amazon
Makita DKP180RTJ 18V Li-ion LXT 82mm Planer Complete with 2 x 5.0 Ah Batteries and Charger Supplied in a Makpac Case
ITS
Makita DKP180RTJ 18V LXT 82mm Planer, 2x 5.0Ah Batteries, Charger & MAKPAC Case