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Old 08-12-2013, 12:34 PM   #15
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Teamaron,

Your Interstate should have the same Tripp-Lite RV750ULHW Inverter/Charger as my Interstate. The charger part is a 3 stage charger. So, if you had the configuration switches on the Tripp-Lite set correctly for your batteries they should not have been harmed by it. You should look for other causes for your batteries to be TU after only one year.
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Old 08-12-2013, 12:57 PM   #16
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Your Interstate should have the same Tripp-Lite RV750ULHW Inverter/Charger as my Interstate. The charger part is a 3 stage charger. So, if you had the configuration switches on the Tripp-Lite set correctly for your batteries they should not have been harmed by it. You should look for other causes for your batteries to be TU after only one year.
Good to hear. I thought I read somewhere on here that Airstream was starting to put 3 stage chargers in trailers, too, so perhaps they've (finally) seen the light!
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Old 08-12-2013, 02:08 PM   #17
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But even after charging house batteries the generator will stall on a heavy load like AC
Be sure that your B4 DIP switch is set to "Low Charge Amps" on the Tripp-Lite. That stopped the generator from tripping the A/C on really hot days. This is the new (last year) recommended setting from AS.
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Old 08-12-2013, 07:57 PM   #18
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Be sure that your B4 DIP switch is set to "Low Charge Amps" on the Tripp-Lite. That stopped the generator from tripping the A/C on really hot days. This is the new (last year) recommended setting from AS.
Interesting

It does do this in the heat of the day

Never thought about that
Thanks
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Old 08-13-2013, 12:40 AM   #19
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Forgot to mention that's the "UP" position on the B4 DIP switch.
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Old 08-17-2013, 09:05 PM   #20
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Low house battery

My 2013 Interstate has a battery parallel switch on the front driver side that can be held down to "jump" a charge to your house battery to allow you to start your gen. You have to hold the switch down while someone else starts the gen. You can then charge your coach battery with your gen. The switch allows a jump both ways. Therefore you can also jump your engine battery if it is low and the house battery is charged.
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Old 08-18-2013, 12:16 PM   #21
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Doesn't the alternator charge the house batteries anymore?
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Old 08-18-2013, 12:37 PM   #22
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Doesn't the alternator charge the house batteries anymore?
It should, if the BIM allows it to happen. I had my Interstate at the dealer for some repairs, and they left the house systems energized while it was parked. The house system got depleted all the way down to 9.9 volts. Naturally, that caused the BIM to separate the house and chassis systems.

I was able to plug into shore power for about half an hour and got the house batteries up to about 12.3v (65% charge) before I had to head back home to beat some nasty weather. That was still too low for the BIM to re-integrate the house and chassis systems, and so no charging at all from the alternator on the drive home, despite being on the road for over an hour.

I've been using the Interstate as my daily driver every day since then, and the alternator still isn't charging the house batteries. But the good news is, my solar panel is charging them, albeit slowly. The rate of charge has gone up about 5% each cloudy day, and 10% each sunny say, and stands at about 90% as of yesterday.
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Old 08-18-2013, 04:51 PM   #23
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Sounds like there's a problem w/ the BIM. On a cloudy day, my house batteries dropped to 12.3 and as soon as the engine was running, the charging voltage applied to the house batteries.
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Old 08-18-2013, 05:54 PM   #24
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Sounds like there's a problem w/ the BIM.
I don't doubt it. House batteries at 9.9 volts is below 0% charge! I'm surprised they're charging at all. And yes, I had some unkind words to say to the dealer's service department for letting the batteries get that low while the vehicle was in their care…
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Old 08-18-2013, 07:08 PM   #25
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According to my dealer, the house batteries are non-prorated warrantied under the AS 3-year warranty. Might have them tested to make sure that excursion to 9.9V didn't damage them. From what I've read on the 'net, AGMs have to be tested differently than a standard lead-acid battery.
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