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      12-29-2012, 10:34 PM   #1
UCBPhD
Private First Class
United_States
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Drives: 2013 Jerez Black E92
Join Date: Aug 2012
Location: Norcal

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Battery tender with a battery for a power source

I was just wondering if anyone else here parks in a public garage, and doesn't really have access to electrical outlets to charge their battery. I have seen portable (i.e., on wheels) battery chargers at car dealerships, so I know something grossly like this exists . . . But I can't seem to find a "tender" type smart-charger that is battery powered. Any thoughts? Thanks.