12 Volt Portable Power Supply With Piper Style Single Pin Plug

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Part# 11-05085
MFR Model# JAC2512-PC


These portable power supplies are an excellent way to power your avionics on the ground while you train or practice in the cockpit. Especially helpful in learning how to operate glass cockpit avionics and panel mount GPS units.

To use the Portable Power Supply plug the cord into an AC wall outlet, and then connect the Piper style plug into the external power receptacle on your aircraft. Furnished with Piper style plug. Manufactured in U.S.A.

This unit can also be used as a battery charger, by using the battery clip adapter which is provided with the unit.
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  • Charge control: constant current charge to a constant voltage then to a float standby.
  • Current Limiting.
  • Fully automatic 3 stage charger can be left on the battery in maintaining/float mode.
  • Can be set for any type lead acid battery, including conventional, maintenance free, deep cycle, gelled-type, valve regulated batteries.
  • Continuous - 100% duty cycle.
  • Low voltage start: will start charging a deeply discharged battery with terminal voltage less than 4 volts.
  • Reverse polarity and short circuit proof.
  • Aluminum caset.
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This unit works great!! I have a 1976 Piper Lance. I plug the unit into the ground port, and it will charge and maintain my battery. In addition, when I turn on the battery master, it powers my panel. So, for those of you wondering, yes you can charge the battery and run you panel from the external port. I had it plugged in float mode on my battery and when I turned on the batter master you could hear the solenoid click and power was feed to the panel. I verified this through the JPI 900.

Andrew P
March 29, 2024

Well built product. Happy with my purchase.

Alpha B Verified Purchase


January 17, 2024


Michael N Verified Purchase


September 15, 2022

The Piper plug is incorrect. The plug does not fit.

Adventure F Verified Purchase


September 11, 2021

Have so far plugged it into the APU socket of a Cherokee and it not only powers the avionics but also charges the Cherokees battery, despite indications to the contrary in the marketing literature and instructions. But according to the electrical system diagram for the Cherokee, the unit should indeed charge the battery, which is in fact the case. The unit seems well-made, etc. There is, however, no indication on the unit or in the instructions or other documentation of where the unit is made.

Robert E
April 15, 2021

This unit has plenty of power to run the avionics in my Turbo Arrow. Seems well built. You have to follow the instructions exactly No negatives. Id recommend this power supply.

October 15, 2020

Works as advertised.

Matt B
September 12, 2020

Works as advertised and then some. Ad says power supply, but this is also a capable battery charger. Needs some minimum load in order to provide power, meaning one may need to turn on more than intended in order for unit to provide power. No adverse noise in my experience.

May 17, 2020

I sat in front of the hangar today learning some new things about the avionics in my arrow today. Computer simulator is just not the same and hard to read manual and twist knobs while flying. This unit works great. It will be needed when I upgrade my avionics in the Spring. I did notice a lot of static on one comm radio but not the other while listening to the tower. The gyros made an annoying sound which will be gone when the vacuum pumps are removed. Overall I am very pleased.

Kim R
December 26, 2019

Exactly what I needed with fast delivery, thank you!

Joseph C
October 6, 2019


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: What are the dimensions?

The dimensions for the portable power supply (11-05085) are 7 1/2" wide, 10" long, 3" tall

Q: How many amps output does this unit have?

25 amps @ 12vdc 90-260VAC

Q: What is the weight of this 12v power supply with piper plug, part # 11-05085?

The power supply itself weighs approximately 6.2 lbs and the cables with the plug weigh roughly 1.5 lbs.

Q: Does this unit accept 220V AC input?

Yes, this unit accepts 90-260VAC.

Q: Can you give me the company and model number that makes your part number 11-05085?

This product is manufactured by Schauer and is model # JAC2512-PC.

Q: Will this charger work with the odyssey battery?

Yes if you are using the included clips.

Q: Can this product also be used for engine starts?

This product is used for a power supply and the charging of batteries, it does not provide a high enough amperage for starting.

Q: Will it charge the battery when left on and plugged into the Piper ground power receptacle?

It will only charge the battery if it is plugged directly to the battery with the alligator clips. The Piper aux plug will power the instrument panel.

Q: Can this be used with an ancient Beechcraft Debonair round GPU plug?

Yes, if you have the round Piper style plug, it will work.

Q: Does it have a battery that can operate without being plugged in? I want to use it at the tie down and don’t have a wall outlet.

No, this unit can be used to start a battery at low voltage but it will need a constant flow of power to charge a battery.

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