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Old 10-15-2015, 11:21 PM   #1
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Default How to hook up battery tender to roadtrek 170

If I connect battery minder to chassis battery and go in and flip switch to turn coach battery on. Will battery minder charge it at same time? Just didn't wanna manually connect to coach battery or try to figure out where on battery isolater to connec
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Old 10-16-2015, 12:28 AM   #2
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most RV's have the 2 batteries isolated ( mine is blue metal box under the hood).

you could use a jumper wire with alligator clips across the terminals there to trickle charge the house battery.

I use a battery tender on the chassis battery from time to time

I usually have van connected to shore power when parked at the house, that has a charger connected to the chassis battery.
I will flip the battery switch once a week or so to top it up

mike
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Old 10-16-2015, 01:01 AM   #3
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What model year is your 170? Some would have a bi-directional battery separator (Sure Power brand iirc) under the hood that should allow charging both the chassis and house battery when the RV is plugged in.

The 2004 190 that I had did not have the Sure Power separator. It had a Herr isolator that was not bi-directional. It did have an OK 3-stage charger so I used to plug the RV in at home to maintain the house batteries and, because the coach had AC power, I could plug in a Battery Minder inside the RV and use a 12V accessory plug to maintain the chassis battery by plugging it into an outlet in the dash.

There's a photo in this topic: http://www.classbforum.com/forums/f5/connector-630.html
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Old 10-16-2015, 04:50 AM   #4
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It is a 2007
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Old 10-16-2015, 12:14 PM   #5
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A 2007 should have a Sure Power battery separator and a Tripp Lite inverter/charger.

(Roadtrek gurus please correct me if I'm mistaken)

I'd expect it to charge both chassis and house battery when plugged in.

The Sure Power 315-200 will engage when either the house or chassis battery reaches 13.2 volts.

You can confirm it works that way with a voltmeter or multimeter. Check the voltage of the house battery and the chassis battery after your 170 has been plugged in for a while (in case the house battery was low). They should read the same, more than 12.7v when plugged in.
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