I was just browsing Ebay and found this unit. Seems sorta large at
12" long but it seems cheap enough. Currently at $1.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7620494821
YOU ARE BIDDING ON AN 800 WATT VICOR MINI STAKPAC DC TO DC CONVERTER
MADE BY WESTCOR CORP A DIVISION OF VICOR
MODEL ST1-3304
COMPACT 12" X 4.25" X 2.5" ENCLOSURE 42-60 VDC INPUT 15 VDC 30 AMPS
OUTPUT (800W MAX)
PLEASE CHECK THE SHIPPING AND HANDLING CALCULATOR ON THIS LISTING
BEFORE YOU BID ON THIS ITEM.
SATISFACTION GAURANTEED
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