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Old 08-13-2018, 02:08 PM   #11
GHen
Senior Member
 
Join Date: Aug 2017
Location: Rock Island
Posts: 457
I have one of those jumpboxes with the air compressor built in. I keep in the RV. In the case of a dead battery I can use it to run the jacks or the slides until I can get the main batteries charged. I see Dealers use the same device when needed. Cheap backup, plus I can use it on the Tow vehicle also.
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