Hello everyone! Just purchased a new 2015 Momentum 350M. Although I do have some RV experience I am completely new to Toy Haulers. According to our sales person our new 350M has 1 12 V interstate battery. Our sales person recommened upgrading to 4 6 volt interstate batteries. They offered to do this for us at a price of $900.00. This includes all 4 batteries, boxes, cables and labor. Is this a fair price? Thanks in advance for everyones help!!

I'm a new GD 350M owner also...They have great people and information at the Grand Design owners forum...You'll see some DIY ideas you can use to possibly do this yourself.Congrats and good luck!

I did that upgrade to my Voltage 3200 when we ought it in April of 2011. My recollection is that I paid a little more than that for 4-6 volt Interstate batteries, so I would say that , yes, it seems like a fair price. I am more than happy with the upgrade, I have a 75 watt solar panel I use to charge the batteries. We dry camp a lot, and it we don't use the furnace much, I can go 5 to 6 days without having to run the generator (except when my wife needs her hair dryer).

You can get 4 Trojan T105 6 volt batteries for 300. Don't know how much the cases cost. Check with a golf cart repair shop for prices in your area. Good luck.

I just did that myself to my GD Momentum 385.I've got about $600 in it so far with batts., cables, boxes etc. now working on proper venting. So maybe another $50 if I'm lucky. (6v Batteries from Costco BTW)So I'm thinking $900 is a fair price for labor, all the stuff AND proper venting.

Thanks for the feed back guys. I agree I think $900 for everything is fair. I might be able to save a $100 doing it myself but not sure I want to tackle the job. I called and 4 of these batteries at the local batter store cost $600.Thanks again for the feed back.

Gand Design Momentum 350M Battery Question | Good Sam Community

trail-explorer
Explorer
Apr 07, 2015
holy cow, $900 is a lot.
nayther
Explorer
Apr 03, 2015
lightfoot wrote:
Save the money on the extra batteries and get a second AC unit. You have a generator and only need 1 12V battery to get it going. You will be wanting the second AC before you need the extra battery power. You are throwing your $$ at something that you don't need and just adding to the dealers bottom line. Get another AC unit, you will need it.

depends on how/where you camp. if you boondock a lot you'll really want more battery. with a rig that size you'll use more 12v running the furnace and lights and such and you running the generator a lot is a PITA IMHO.
lightfoot
Explorer III
Apr 02, 2015
Save the money on the extra batteries and get a second AC unit. You have a generator and only need 1 12V battery to get it going. You will be wanting the second AC before you need the extra battery power. You are throwing your $$ at something that you don't need and just adding to the dealers bottom line. Get another AC unit, you will need it.
Strabo
Explorer
Apr 01, 2015
op01jre wrote:
Mine definitely only had on 12v. And yes I did get the generator. I don't pick it up for another 2 weeks...unfortunately.

I would insist they supply 2 battery's in that size rig.
op01jre
Explorer
Mar 31, 2015
Mine definitely only had on 12v. And yes I did get the generator. I don't pick it up for another 2 weeks...unfortunately.
bigdak4
Explorer
Mar 30, 2015
I just bought a 350M too :)

Mine has two 12V batteries, are you sure you don't have two?

Did you get the generator? I am really curious if they are needed if you can just fire up the generator if you need power....
2oldman
Explorer II
Mar 28, 2015
lightfoot wrote:
...boondocking? If so it is money well spent, if not you are throwing good money at something that you don't need.
Good point.
lightfoot
Explorer III
Mar 28, 2015
The question no one has asked you yet is - are you doing a lot of boondocking? If so it is money well spent, if not you are throwing good money at something that you don't need.
2oldman
Explorer II
Mar 27, 2015
sclark wrote:
Lots of places have them for less then (sic) 150.
Obviously you meant 2, not 4, for $300.
op01jre
Explorer
Mar 27, 2015
Yes 4 of the trojan or interstate 6 v deep cycle batteries are going to cost at least 500 to 600. So I figure $300 for boxes, cables, venting and labor is worth it. I think we are getting a pretty good deal. I'm sure I could do it myself cheaper but not much cheaper to be honest.

Either way we are excited to pick up our 350M next month...only a couple weeks away.

Thanks again for everyones feed back.