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White Lightning M2850 50-amp 28-volt GPU with 3-pin Oval Plug

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Part# 11-19265
MFR Model# M2850


The M2850 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. Its rated output is 28-volts up to 50-amps (approximately 1500 watts). 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.


  • Color-coded, keyed SB-50 type output connection to prevent accidental voltage mismatch. RED designates 24/28 volt compatibility.
  • Digital output meter shows 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


  • Input Voltage: Universal 90-264 volts AC, 47-63 Hz
  • Input Current: 17A @ 115 volts AC
  • Input Protection: 20A circuit breaker, cycle ON/OFF to reset
  • Output: 28.50 +/- 0.25 VDC, 50 amps max cont.
  • Output Cable: 4 AWG, SB-50 to 3-pin oval AN2551 (NATO)
  • Chassis Dimensions: 6.4” 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



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.