Overview

Smart, Safe, Convenient, Airframe Power The White Lightning SmartGPU is a specialized switching-mode power supply designed to provide pilots and aviation maintenance professionals with a portable, affordable source of stable, high-current, noise-free DC power that replicates the in-flight electrical environment. Its rated output is 28-volts up to 114-amps. The GPU’s intended purpose is to energize an aircraft’s main electrical bus without using the ship’s battery or engine. It will safely provide continuous power for the most delicate electronics and airframe systems up to its full rated output. The SmartGPU mobile app allows the user to monitor the power draw from the flight deck or anywhere in the hangar. SmartGPU Features S28114 - Provides up to 114A of 28V DC airframe for piston and light turbine aircraft. S28054 - Provides up to 54A of 28V DC airframe power to accommodate the needs of turboprop and business jet operators. Bluetooth and Wi-Fi* enabled for remote monitoring and control. Graphical color display with large, highly readable volt/amp output meters. Rugged, heavy-gauge aircraft cable with AN2551 external power plug. Environmental temperature sensor – shows ambient air temperature inside an aircraft hangar with customizable trigger alert settings. White Lightning Features Universal, worldwide AC input compatible. (GPU and battery care functions) Compact, lightweight, rugged design with collapsing carry handle. Color-coded, polarized output connectors prevent voltage mismatch. High-efficiency switching-mode power technology. Forced air cooling for long term reliability. Programmable timer with safety auto-shutoff. USB ports for data downloads, firmware upgrades, and device charging. * Wi-Fi functionality is associated with battery charging only. BatteryMINDer maintenance charger option will be available soon. The kit is easy to install after GPU purchase.

Features

Ground Power:

• Program and customize settings on your smartphone using Bluetooth.
• Use the GPU to preserve battery start capacity during pre-flight inspection, ensuring a cool start every time.
• Reliable, consistent power for avionics updates, flight planning, avionics training, and cabin ventilation.
• Use for aircraft maintenance and troubleshooting.

GPU Features:

• Color-coded, keyed output connection to prevent accidental voltage mismatch. RED designates 24/28 volt compatibility.
• Digital output meter shows voltage and amperage (load).
• Programmable auto-shutdown timer.
• Dual USB power ports for mobile device charging, and software updates.
• QuietFiltered™ output for interference-free COM radio operation.
• Auto protection/recovery from short circuit, reverse polarity, over voltage/load/temperature.

Battery Maintenance (Coming Soon):

• With Wi-Fi connectivity, the option to remotely monitor battery condition in real time.
• Maintain optimum battery condition with continuous maintenance charging.
• Ability to create multiple aircraft and operator profiles complete with event logging, such as power loss/restore, charge modes and battery tests.
• Remotely monitor hangar temperature with customizable trigger text alert notification, allowing the aircraft owner to be alerted to changes in the hangar environment.
• SmartGPUs come with the option to install a BatteryMINDer maintenance charger (available March 2025). The kit is easy to install after GPU purchase.
• Optional BatteryMINDer maintenance charger for SmartGPU will be available factory-installed, or as an easy field upgrade in March 2025.
• VDC BatteryMINDer® technology + White Lightning power
• Monitor battery condition, charging stage and hangar temperature remotely via Wi-Fi
• 10-amps maximum = 250% more power
• Battery care, recovery, and preservation
• Full-time, continuous operation or custom charging schedule
• Temperature compensation and desulfation
• Less expensive than stand-alone unit
• Factory installed or field upgrade

Specifications

S28114 Specifications:

• Input Voltage: Universal 90-264 volts AC, 47-63 Hz
• Input Current: 18.7A @ 115 volts AC, 17A @ 230 volts AC
• Input Protection: 20A circuit breaker, cycle ON/OFF to reset
• Output: 28.50 +/- 0.25 VDC, 114 amps max continuous @240VAC input
• Output Cable (28V DC): 8-ft, 6 AWG, SB120 to 3-pin oval AN2551 (NATO) plug
• Input Cable (115V AC): 10-ft line cord with ground, rated for 20A
• Input Cable (230V AC): 3-ft 50-ft 12-gauge extension cord (L6-20R to L6-20P) (packaged/shipped separately) with AC connection pigtail (L6-20R) plug
• Chassis Dimensions: 8 x 5.38 x 19.5 (HxWxD, inches, including handle and feet)
• Carry Weight with AC input and aircraft output cable: 20 lbs
• Shipping Carton Dimensions: 22 x 10 x 17 (LxWxH, inches)
• Shipping Weight: 30 lbs.

S28054 Specifications:

• Input Voltage: Universal 90-264 volts AC, 47-63 Hz
• Input Current: 18.7A @ 115 volts AC, 17A @ 230 volts AC
• Input Protection: TBD circuit breaker, cycle ON/OFF to reset
• Output: 28.50 +/- 0.25 VDC, 54 amps max continuous @240VAC input
• Output Cable: SB120 to 3-pin oval AN2551 (NATO)
• Input Cable (115V AC): 10-ft line cord with ground, rated for 20A
• Chassis Dimensions: 8 x 5.38 x 19.5 (HxWxD, inches, including handle and feet)
• Carry Weight with AC input and aircraft output cable: TBD lbs
• Shipping Carton Dimensions: 22 x 10 x 13 (LxWxH, inches)
• Shipping Weight: 31 lbs.

Applications

IMPORTANT DISCLAIMER & OPERATING LIMITATIONS:
Audio Authority® authorizes this device for use ONLY by aviation professionals, such as licensed pilots and maintenance technicians, knowledgeable about their aircraft electrical system and batteries. The operational concepts, recommendations, and instructions presented in our manuals are necessarily general and make assumptions that do not apply to every aircraft, and may not be correct for your particular aircraft. Incorrect use of this device has the potential to damage the GPU and/or aircraft components. It is the operator’s responsibility to read completely and fully understand the included manual, plus those sections of the Aircraft Flight Manual and Maintenance Manual that pertain to their aircraft’s electrical system design, to determine the appropriate use of this, or any, external power source. If you cannot do this, do not use this product. Instead, consult the airframe manufacturer or a technician familiar with your specific aircraft type and configuration before connecting the GPU to your aircraft.

Applications
White Lightning SmartGPU models provide power for:

• avionics demonstration and testing
• database and firmware updates
• flight planning and cockpit procedures training
• troubleshooting and maintenance
• powered pre-flight inspections and battery top-off charging
• battery care and maintenance charging (BMC24 option only)