70 Amp 28 Volt Aviation GPU with BatteryMINDer (2870A-B2)
SKU: 2870A-B2
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Safe, Affordable, Airframe Power for Piston and Light Turbine Aircraft
Our next generation 2800 Series GPUs achieve a remarkable 89% electrical efficiency to provide up to 2000W of power. Its cool running, switching-mode power modules provide massive amounts of stable, noise-free power from a 90-230 volt AC outlet. It will safely power the most delicate airframe systems with laboratory-grade DC without risk of costly damage to sophisticated avionics, instruments, or electronic equipment. This new generation GPU is designed as a practical alternative to large, expensive start carts, battery chargers, and other devices designed primarily to spin starter motors. Unique, ergonomic design features dual, removable cord/tool caddies.
Integral BatteryMINDer
This GPU includes an integral BatteryMINDer®, the 3-stage continuous-duty charger that maintains, conditions, and desulfates lead-acid aircraft batteries (not for NiCad or lithium). The new CEC1 series BatteryMINDer offers improved diagnostic tools and modes that extend the life of your battery. Temperature-compensated output ensures precise charging under all conditions and will never over or under-charge. Desulfation restores full capacity and extends battery life. Our exclusive Airframe Interface Kit provides everything you need for use with FAA certified aircraft. Just hand the kit to your licensed mechanic to install and document with a simple airframe maintenance log entry.
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Features
GPU Features
- Output: 28 VDC, 70 Amps continuous
- Input: 100-240VAC 60Hz 19A
- Stable, noise-free DC power, safe for today's advanced cockpit systems
- Digital output meters for both voltage and amperes, with overload alarm
- Includes detachable input and output cables with AN2551 3-pin oval plug
- Compact, lightweight design utilizes highly efficient digital switching-mode power modules for greater reliability
- Removeable caddies for cable management and tool storage
BatteryMINDer Features
- Input: 90-140 VAC 50-60 Hz
- BatteryMINDer integrated in GPU chassis
- Compatible with most aircraft batteries including Concorde
- Aircraft interface kit included for convenient and FAA approved connection
- Includes detachable charging cable
Specs
Specifications
- GPU Input: 100-120 Volts AC, 60 Hz, up to 19 Amps
- GPU Output: 28 +/- 0.5 Volts DC, 70 Amps continuous
- BatteryMINDer Input: 90-140 Volts AC, 50-60 Hz. Unloaded input current: 80 mA AC
- See BatteryMINDer user manual for detailed specifications
- Weight: 23.2 lbs (10.5 kg) without cables
- Dimensions including cord caddies and feet: 8.9"H x 11.25" W x 18.38"D (200mm x 284mm x 467mm)
Without cord caddies: 5.1" W (130mm)
Note: See the GPU manual for details on aircraft compatibility, battery use and charging limitations, and start assist (piston engines only).
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
The Model 2870A-B1 provides 28-volt DC power for:
- Powered preflight and battery top-off
- Battery charging and conditioning with BatteryMINDer charging system
- Cockpit procedures training NavData updates
- Cabin environmental systems
- General maintenance
FAQ
Frequently Asked Questions
Q: Can I use the 2870A to start an aircraft engine?
A: The 2870A GPU is adequate for piston engine start ASSIST ONLY. Its capacity is inadequate for turbine engine start assist and should be used for airframe systems power only. Do not attempt turbine engine starts with the GPU connected to aircraft. See the User Manual for details.
Q: Can I leave the BatteryMINDer connected for long periods of time?
A: Yes, the BatteryMINDer is designed to remain connected and will not overcharge or damage your battery.
Q: Does my GPU have Active Load Monitoring?
A: This feature was introduced in January, 2015. All GPUs produced since then have the feature, and older GPUs can be upgraded at the factory for a fee. Details.
Q: Does the GPU with BatteryMINDer work outside North America?
A: The GPU itself may be used with almost any voltage, but the internal BatteryMINDer is only compatible with a 100-127V AC power source. In countries with other voltage standards, a compatible BatteryMINDer must be purchased and used separately.
Q: Is the GPU BatteryMINDer compatible with Concorde batteries?
A: Yes, BatteryMINDer chargers inside our Ground Power Units do not require any special configuration to properly charge Concorde batteries.
Q: Is it okay to use White Lightning™ (Enhanced Flight™) GPUs with a lithium ion or nickel-cadmium battery in the aircraft?
A: White Lightning™ GPU products are designed to power the airframe electrical system for routine maintenance and pre-flight checks without starting the engine or depleting the ship's battery. A charged aircraft battery of any chemistry may be safely used. If the ship's battery is not fully charged, follow the battery Original Equipment Manufacturer’s (OEM) instructions to charge the battery prior to connecting any ground power unit. Note: It is the operator's responsibility to verify that the rated output voltage and current of the GPU does not exceed the maximum charging rate and voltage of the ship's battery. Connecting a discharged battery may cause the GPU to engage its internal protection (see Troubleshooting).
Q: Why is Audio Authority selling aviation products?
A: Audio Authority was the original designer and manufacturer of ground power products sold by Enhanced Flight Group, LLC. The Enhanced Flight GPU shares technology with Audio Authority power supplies used for demonstrating mobile audio electronics in retail stores. After Enhanced Flight ceased operations in 2009, demand was still strong for these products, so they are now available directly from Audio Authority and also from our distributors, Sporty's Pilot Shop and Aircraft Spruce.
Literature
Manuals
GPU BatteryMINDer Manual - 3.47 MiB CEC1 Series integral GPU BatteryMINDer manual
Airframe Interface Kit - 2.18 MiB Integral GPU BatteryMINDer Airframe Interface Kit Installation Instructions.
2870A GPU Manual - 885.60 KiB 28-Volt Ground Power Unit manual. Updated 2022.