I upgraded to a four-stage charger: Progressive Dynamics PD4655. Mostly because I'm a gadget geek, but also because WFCO doesn't have the best track record.
The fourth stage is "EQUALIZATION Mode 14.4 Volts - Every 21 hours for a period of 15 minutes prevents battery stratification & sulfating - the leading cause of battery failure."
To respond to the original question, some people just buy very nice chargers for when their trailer is in storage. Maybe that's an option for you. If not, then the unit I have doesn't have a separate smart charge component you can relocate.
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-Scott, DW, DG, DB, and DD
2011 Passport 2590BH
2009 Ford F150 SuperCrew F X4 5.4L w/Max Tow
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