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Old 05-19-2019, 04:28 PM   #11
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As mentioned above it depends on how you want to use it, but ultimately the question is regarding AC usage. We have an Agile with AGM batteries and all electric/diesel so no propane. We can dry camp no problem unless we need AC. If it’s that hot we choose a place to plug in. However as recovering backpackers the screen package and the roof top fan should be enough unless it’s super hot. We can open the side and rear doors with lots of air flow. We also use screens for the front door windows. Not running AC everything else will run for days.
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Old 05-19-2019, 04:31 PM   #12
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Also one of the things that we liked about RT was not having a standard generator. Given how we use the van we never would have used it but would have had the space weight and ongoing maintenance. If we wanted a standard gender I would have looked at a Pleasureway instead.
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Old 05-19-2019, 05:00 PM   #13
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Go with 800 amp (4 batt) lithium, voltstart, underhood generator, and diesel alde. Then you need only one hydrocarbon fuel source - Diesel. I have a 4x4 SS agile with this configuration. Works great. Plus if you drive to places in the brutal southwestern US summer heat you can run the roof AC while driving. You can't do that with a propane generator. My $0.02
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Old 05-19-2019, 08:19 PM   #14
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I have a 2017 road trek Zion with 240 watts solar and agm. Iím always so glad I donít have the noisy stinky generator. I try to find campgrounds that donít allow. I only needed the voltstart once at 9degrees in squaw valley, came on at 4 am and scared the heck out of me. The air will run for about an hour, on solar but I also find the air to be so loud I try to avoid that too.
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Old 05-19-2019, 09:25 PM   #15
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While I don’t have a RT, I do have a vintage class B. When I brought my campervan a few years ago i brought one without a generator, since I was only camping at campgrounds & they have electric hookups. At that time I wasn’t interested in boondocking. Then a year or two later, I was boondocking at airport parking lots & casinos. I now have decided that my next class b will have a genny. Also on viewing some you tubers that have solar, sometimes they need the genny to charge the house batteries because the weather is bad & the batteries aren’t charging with the solar.
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Old 05-19-2019, 10:20 PM   #16
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We have decent sized Lithiums and a 200 watts of solar on the roof. We also have an Onan. We rarely ever boondock, but do stop overnight at Flying J's, Cracker barrels, etc.

I'm pretty sure we could get by nicely without the gennie. We have a 2000 watt inverter and several times have camped without shore power, used teh microwave, tv's, instant pot etc and still had most of our battery capacity left - and it gets back to 100% on te next day's driving.

But still, I am not unhappy to have the Onan. I just like the peace of mind that I always have another option.

I guess Roadtrek's second alternator is another possibility, but I have often wondered if idling the Mercedes engine a long time is wise. (And whether that was why MB dropped RT from their list of master upfitters?)

No doubt the Onan is noisy though - and other than an emergency situation I suspect the only time I would use it would be the get the batteries up to 100% before quiet tie if needed - or maybe running the AC at a lunch stop en route somehere.

We always carried a Honda gennie with our Airstream trailer and let it run in the back of teh truck when stopping on cold nights at Flying J's so we could be sure of keeping the furnace running + light's TV etc overnight and it was great for that. But the Airstream just had two small AGM's.
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Old 05-21-2019, 01:43 PM   #17
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I have recently purchased a 2014 Agile from a person I know very well. Much like others have said, generator need is really a function of AC usage. I have 3000 watt inverter and 300w of solar panels. That handles everything just fine. I am in the Northeast and don't expect to need the generator much. The previous owner was in the south and used it frequently especially for the dogs.

I really like the idea of no generator, but am suspect of it in the Mercedes Sprinter / Roadtrek combination - especially the earlier generations. The diesel engine emissions systems are problematic and I don't like the idea of anything requiring that to run "extra". Also, I believe that Roadtrek was an early adopter of the 2nd alternator and some owners have reported issues. I expect most will go this route in the future as there are so many benefits to it. For me personally, I like the reliability of the generator. and will wait until moving over to a non generator version.

One thing to note that the Agile (at least mine) is wired differently than most other RV's I have seen (not that I have seen many). There is no mechanical tie in between the sprinter and the coach. The Sprinter engine will not charge the coach batteries. Interestingly, neither will the propane generator. The only way to charge it is to plug in or solar. This definitely could put a limit on extended boondocking if you are a heavy power user and don't have a way to recharge. So far, I have been a very light user of electrical and haven't had any concerns.
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Old 05-21-2019, 01:50 PM   #18
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Quote:
Originally Posted by wantoworkless View Post
I have recently purchased a 2014 Agile from a person I know very well. Much like others have said, generator need is really a function of AC usage. I have 3000 watt inverter and 300w of solar panels. That handles everything just fine. I am in the Northeast and don't expect to need the generator much. The previous owner was in the south and used it frequently especially for the dogs.

I really like the idea of no generator, but am suspect of it in the Mercedes Sprinter / Roadtrek combination - especially the earlier generations. The diesel engine emissions systems are problematic and I don't like the idea of anything requiring that to run "extra". Also, I believe that Roadtrek was an early adopter of the 2nd alternator and some owners have reported issues. I expect most will go this route in the future as there are so many benefits to it. For me personally, I like the reliability of the generator. and will wait until moving over to a non generator version.



One thing to note that the Agile (at least mine) is wired differently than most other RV's I have seen (not that I have seen many). There is no mechanical tie in between the sprinter and the coach. The Sprinter engine will not charge the coach batteries. Interestingly, neither will the propane generator. The only way to charge it is to plug in or solar. This definitely could put a limit on extended boondocking if you are a heavy power user and don't have a way to recharge. So far, I have been a very light user of electrical and haven't had any concerns.

That is very odd wiring to be sure. I would think you could pretty easily add an automatic transfer switch to allow it to charge the coach off the generator. Could you have one already that isn't switching correctly? Also very odd to not have any engine charging as most they did would either charge from the MB alternator though a separator (I think on AGM) and from the add on alternator which was standalone to the coach (both AGM and lithium). What batteries do you have?


Here is a link to the owners manual for a 2014 Agile. Coach batteries are under the hood, and the generator should be charging them from a quick look at it.
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Old 05-21-2019, 02:02 PM   #19
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Thanks. I will take a look at that. I am most confused why the generator doesn't charge the batteries. With that, i have made zero effort to figure it out yet. I need to do that though.
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Old 05-22-2019, 05:29 AM   #20
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I like having a generator in my '07 Agile. I never stay in parks. Pretty much always Boondock. So it's useful for the microwave and to cool down the thermal soak with the AC at the end of the day before we settle in. The propane tank goes a very long way if you are cognizant of your usage. With hot showers, cooking and generator use I can still go a couple weeks easily. I inherited my RV as it is. So, I have not looked at other options beyond the possibility of a second alternator and a couple extra batteries, but I have been very happy with the way everything works so far and don't feel the need to spend any money on upgrades right now.
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