Piper Arrow: Portable Aircraft Ground Power Units & Battery Packs

A GPU power supply is a unit that delivers continuous voltage for repeated engine starts and maintenance procedures. These units are ideal for powering aircraft avionics and systems without engaging the onboard battery, making them useful for both preflight and maintenance scenarios. They are available in 24V or 28V configurations, depending on aircraft requirements.

GPU power supply and combination units integrate both a battery pack and an AC-to-DC power supply into one system. This design allows the unit to start aircraft engines and power onboard systems either through stored battery energy or external AC power. They’re particularly valuable in remote ramp locations where shore power may not be available.

Power supplies are designed to provide continuous voltage to the aircraft when the unit is plugged into AC power, but they do not include a starting battery. Unlike engine-start units, power supplies are ideal for powering avionics, lighting, and cockpit electronics during diagnostics or configuration without drawing on the aircraft’s internal battery.

Start Pac’s portable starting units are available in 24V, 26V, and 28V configurations to accommodate a wide range of aircraft systems. These voltages are commonly used for starting turbine engines on both fixed-wing aircraft and helicopters. Selecting the correct voltage ensures proper compatibility and safe operation during engine starts.

Lithium-ion portable GPUs from Start Pac offer several advantages over traditional lead-acid units. They are 42% lighter and 32% smaller in size while delivering the same level of starting power. Lithium-ion batteries also provide double the battery life and are not subject to sulfation, which helps reduce long-term maintenance and replacement costs.

Lead-acid portable aircraft GPUs may be preferred in operations where cost is a major consideration or where lithium-ion transportation regulations could be restrictive. While heavier and larger, lead-acid units remain highly reliable and effective for aircraft engine starts, especially when weight and space are not a primary concern.

Yes, portable power supply units are safe and effective for aircraft with modern glass cockpits and sensitive avionics. These units deliver stable, regulated voltage that protects onboard systems from surges or drops during power-up procedures. They’re often used during maintenance, avionics programming, or systems checks.

Yes, combination GPU units can operate in battery-only mode, allowing technicians to start engines or perform maintenance in locations without access to AC power. This makes them especially useful for flight line operations, remote ramp areas, or emergency field servicing where mobile flexibility is essential.

Choosing between 24V, 26V, or 28V depends on the electrical system requirements of your specific aircraft. Most general aviation aircraft use 24V systems, while certain turbine or military aircraft may require 28V. Always check your aircraft manual or consult with a maintenance expert before selecting a portable ground power unit.

Red Box lithium-ion and lead-acid start units both deliver reliable power for aircraft engine starts, but they differ in weight, maintenance needs, and lifespan. Lithium-ion GPUs are significantly lighter and offer longer service life, while lead-acid units are heavier but often more budget-friendly upfront. Red Box manufactures both types to aviation-grade standards, giving users flexibility based on operational priorities.

Red Box lithium-ion ground power units provide superior energy density, which means more starts with less weight. They’re also maintenance-free and have a longer cycle life than lead-acid equivalents. For operators seeking high performance, portability, and reduced downtime, Red Box lithium-ion GPUs offer a compelling solution for modern aircraft maintenance.

Yes, Red Box lead-acid start units remain a reliable and cost-effective option for many general aviation and commercial applications. While heavier and requiring more routine maintenance than lithium units, lead-acid GPUs are well-proven, robust, and can be recharged quickly. They’re ideal for operations where weight isn’t a concern and budget constraints are top of mind.

Red Box lithium-ion aircraft start units require virtually no maintenance, offering a plug-and-play solution with long-term reliability. In contrast, lead-acid units need periodic charging and careful monitoring to avoid sulfation or deep discharge. Operators seeking minimal upkeep often prefer Red Box lithium-ion GPUs for their convenience and durability.

Lead-acid start units generally perform better in extremely cold environments compared to lithium-ion units, which can be more sensitive to low temperatures. However, Red Box lithium-ion GPUs are designed with protective features that help mitigate cold-weather limitations. Your choice should depend on the typical climate where the GPU will be used and stored.

Thanks to their lighter weight and compact design, Red Box lithium-ion GPUs are easier to handle and stow, helping reduce clutter and the potential for foreign object debris (FOD) around the aircraft. Their mobility and streamlined footprint also contribute to safer, more efficient ramp operations.

StartStick is a lightweight, portable aircraft ground power unit (GPU) designed to deliver instant 28V DC power for turbine engine starts. It connects directly to an aircraft’s external power receptacle, providing high-discharge energy without the need for larger, cart-based equipment. StartStick is ideal for quick turnarounds, AOG support, and ramp operations where mobility, convenience, and performance are essential.

StartStick GPUs are compatible with a wide range of fixed-wing and rotary aircraft equipped with a standard three-pin 28V DC NATO-style power receptacle. This includes many general aviation, business jet, and military aircraft. The unit is particularly popular among operators who need a portable, self-contained GPU for field maintenance and remote engine starts.

StartStick portable GPUs offer several advantages over traditional cart-based systems, including reduced weight, greater mobility, and no need for cables or power outlets on the ramp. StartStick’s compact form factor allows it to be carried by hand or stowed in the aircraft, making it ideal for field missions, remote starts, and AOG emergencies. It also eliminates many of the logistical challenges associated with larger ground power units.

StartStick is built for rugged aviation environments, with a durable, shock-resistant outer shell and sealed electronics to protect against dust and moisture. The unit is engineered for reliable performance in extreme temperatures and operational conditions, making it a trusted solution for military, commercial, and general aviation users alike.

Depending on the specific model and aircraft type, a fully charged StartStick can provide between one and three turbine engine starts. The exact number will vary based on environmental conditions, aircraft requirements, and battery health. StartStick also displays real-time voltage and battery status to help users monitor performance during operations.