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White Lightning M1428-DV Dual Voltage Mini GPU with 3-pin Oval Plugs

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Part# 11-19266
MFR Model# M1428-DV


The M1428-DV Mini-GPU 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. It contains discrete outputs for either 14 or 28-volts DC, selectable by a front panel switch. It only provides one output voltage at a time, switch-selected and indicated by the front panel voltmeter display. 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 Model M1435 comes with two 6' airframe output cables – one with a yellow SB50 for 14V output, and one with red for 28 volts – to protect from damage due to accidental voltage mismatch. Both output cables have AN2551 3-pin oval plug that connects to the aircraft. For E/A-B connections, the 802-864 yellow to yellow SB50 may be purchased separately.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


  • Color-coded, keyed SB-50 type output connection to prevent accidental voltage mismatch. (YELLOW designates 12/14 volt compatibility, RED designates 24/28 volt compatibility)
  • Dual digital output meters for voltage and amperage (load)
  • Front panel status indicator LED
  • Programmable auto-shutdown timer and dual USB power ports for mobile device charging
  • QuietFiltered™ output for interference-free COM radio operation
  • Auto protection/recovery from short circuit, reverse polarity, over voltage/load/temperature


SPECIFICATIONS 14-Volt Operation 28-Volt Operation
Input Voltage 90-240 volts AC, 50-60 Hz 90-240 volts AC, 50-60 Hz
Input Current 5.3A @ 115 volts AC 8.2A @ 115 volts AC
Input Protection 10A Littelfuse 617 Series P/N 0617010.MXP
Output 14.25 +/- 0.25 VDC, 35 amps max 28.50 +/- 0.25 VDC, 27 amps max
Output Cables 8 AWG, Yellow SB-50 to 3-pin oval AN2551 8 AWG, Red SB-50 to 3-pin oval AN2551
Chassis Dimensions 6.13” H x 5.32” W x 14.63” L
Carry Weight w/cables 17 lbs
Carton Dimensions 10” H x 10” W x 18” L
Shipping Weight 18.3 lbs


Works great. Should have bought earlier.

Larry V Verified Purchase


December 13, 2022


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the system come with the Aircraft receptacle?

It will come with the standard 3 pin oval plug but the aircraft mounted receptacle is not included.

Q: Does this equipment "float" with battery voltage to prevent overcharge?

No, this displaces a constant 14/28 volts. This has over voltage protections/load/temperature. It also has reverse polarity.

Q: I need 1200amps to start? Will the White Lightning M1428-DV Dual Voltage Mini GPU with 3-pin Oval Plugs do it?

This is a GPU for running avionics or swinging gear legs, this is not for starting the aircraft.