The GRIND Machine is powered only by a U.S.-standard electrical outlet (not battery-powered). In case you do not have access to an outlet, you can purchase a portable power supply that is compatible with the Machine - we recommend this one on Amazon, as the GRIND Team has tested it with the Machine, showing optimal performance results. On average, our tests showed that the recommended power supply lasts for about 1.5 hours, depending on the usage.
The Machine comes with a 6-foot, three-prong extension cord, but a longer cord may need to be purchased by a third party if your outlet is further away from this distance. We recommend at least a medium-duty, three-prong extension cord that is rated for outdoor usage.