Ground Power Unit

[M20F-1968]

I am looking for a Ground Power Unit (GPU) to allow running of avionics, updating software, etc... without running engine.  I have a Battery Minder, but that does not supply enough power.  I am thinking 25 - 50 amps of clean power.  The aviation ones run about $600.00.  There is an automobile company that makes an aviation product (available from Spruce) for about $250.00.  Are there other sources of power supplies that can do the job, but do not have the "aviation" word attached to them that raises the price to 1/2 AMU? 

John Breda

[Danb]

John that is what I have got it 12 yrs ago when I was learning the G1000 never had any issues 

[Godfather]

If I was buying one my first choice would be an Iota DLS converter

the company produces 12 volt and 24 volt units. 

[kortopates]

If I was buying one my first choice would be an Iota DLS converter
the company produces 12 volt and 24 volt units. 

Interesting product, but I notice it runs a volt low for an aviation 28V buss.



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[Godfather]

28 minutes ago, kortopates said:

Interesting product, but I notice it runs a volt low for an aviation 28V buss.



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Not sure if that would be a problem for most aircraft. The thing that amazes me is the tight voltage control between no load and max load 0.2 volts. 

[larryb]

I bought this

https://www.amazon.com/gp/product/B01IU8QBCO/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

Voltage is adjustable over a small but sufficient range. I have only used it a couple times but so far so good.