The SPARK Power Unit (SPU28b) is a next-generation portable aircraft power unit engineered to deliver exceptional starting performance in the smallest and lightest package in its class. Designed for helicopters and light aircraft, the SPU28b provides class-leading power output, rapid recharge capability, and intelligent operational safeguards—all in a compact, field-ready platform built for both base and remote operations. Unlike conventional aircraft booster batteries that prioritize size and capacity, the SPU28b is engineered around high discharge performance, delivering powerful and reliable starts without unnecessary weight. Whether you're operating from a hangar, a remote fuel cache, or deep in the field, the SPU28b is designed to keep your aircraft moving.