The AP2425-441 DC adapter (seen in photo) at US$99.95, allows the G4 Powerbook to be operated from the cigarette lighter of an automobile as well as the In-Seat Power Supplies available in many commercial aircraft.
The device features output short circuit protection, safety current limiting, UnderVoltage and OverVoltage protection, internal temperature limit cut-off circuitry, a 3-year warranty and a nylon carrying case.
The power adapter can be bought through retailers and through Lind’s online store.