This document provides specifications for the Powervamp 3000S ground power unit. The 3000S can provide 72 amp-hours of power from its series configuration of lead-acid battery cells. It is housed in an all-welded stainless steel case and can operate in temperatures ranging from -30°C to +40°C. Key features include a digital voltmeter, heavy-duty output and charging ports, and electronic protection against deep battery discharge. The 3000S can be paired with a second unit to double its capacity and power larger aircraft.