[RFI] Mercedes Sprinter Charger RFI

Jim McCook w6ya at cox.net
Mon Feb 3 14:39:40 EST 2025


Thanks to everyone who posted comments.  I need to find out more from 
the owner regarding charging.... whether he plugs in AC or plugs in a 
charger.  Regardless, I always assume the problem with ALL electronic 
charger RFI is noise backing up into house wiring.  In this case it 
could also be radiating from the van's internal wiring.  If only these 
chargers would employ adequate filtering like we have in our radio 
equipment power supplies!  Apparently the charging time is programmable, 
so if a charge from 10pm to 6am would sufficiently maintain the lithium 
batteries, it could be a simple solution.  I need more research and 
information from the mfr/dealer.  The owner is trying to be helpful.

Unfortunately he just completed a large ADU that has multiple noise 
sources, so I will also be working to get his electrician to substitute 
analog power supplies wherever possible.

It's nice to know the Tesla chargers apparently don't create RFI, at 
least in Jim's case.     73, Jim W6YA


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