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I have a battery question relative to my house batteries that need to be replaced. I currently have 2 12v Lead Acid batteries. It is difficult to service them because of how they are situated in my coach so I'm thinking about changing. I think I read somewhere that changing to Lithium batteries could be a problem and I'm not really wanting to spend that much money. Are there issues with moving to AGM Batteries? Are there any issues with moving to a single 200 Ah AGM battery rather than purchasing 2 100Ah batteries. I'm pretty sure that I know the answers to these questions but want to be sure before spending the money.

I have no power to anything that the house batteries power, and the generator will not start, even using the "battery boost" switch. My batteries are fully charged, I get 12.6v from them and through the master switch as far as the cable that disappears into the nether regions of the bus (2002 Monaco Diplomat 40ft). I have looked at every fuse that seems applicable and flipped every breaker that seems applicable, including the one on the generator, inverter, and the 50 amp in the bedroom as well as the GFI reset in the master bath. In the electrical panel below the driver's side window is a terminal with a large cable labeled "House" and when I hook up my meter to this, I get no reading. I am assuming this cable is the same one that exits the battery box in the rear (?) in which case it should have 12.6v but it does not. So either that supposition is wrong, or I am not getting a good ground with the clamp on my meter (hooked to the suspension, exhaust, and any other metal I could find...) or there is a breaker or fuse that I have missed, or that cable has broken. Any ideas on what fuse, breaker, or switch I have missed, or what else might be wrong? Thanks in advance! Tim

I'm a newbie RV owner. I live in Ohio and we've had a bitter cold winter as you may know. Our coach is stored outside, a 2007 Beaver Contessa 400HP CAT. It has 2 12V chassis batteries (group 31 Interstate, dated 4/14) and 4 6V house batteries (Lifeline AGM's dated 6/12). The last time I tried to start it, the chassis batteries cranked but the coach did not want to start so they ran low. The house batteries were also low due to not having the residential refrigerator unplugged, thats another story. Anyway, I brought all them home to charge and they seemed to take the charge ok. I then re-installed the chassis and house batteries. I turned on the battery disconnect switch for both chassis and house. Normally when the house switch is turned I'll hear a little beep indicating there is power. This time I did not. The coach has a door handle keyless entry and with no house power, it does not work, hence I cannot get into the coach to even try to start it. Its one of the fancy door remotes that is a part of a handle that is screwed into the side of the coach to the left of the entry door. Is it possible there is a non battery issue going on? I have all 6 batteries out and being tested at a battery store just to rule out it being a battery issue. I'm not confident that it is a battery issue as the house batteries were all reading around 6.25V when I put them back in the coach. Any ideas is much appreciated as I am at a loss.

After 11 years, my 4 - 6V Interstate house batteries finally died (i'm one of those strange ducks that takes care of his batteries). Found a heck of a deal on four new 12V Interstate Marine/RV deep cycles. They will fit as they are almost the same exact size as were my 6V's. I realize I can hook them in parallel and still have 12V, but will increase the amps, which is my concern. Will my Xantrex Invertor need to be reprogrammed or will it handle the amps as is? I would not even conside this, but the deal I got on the 4 Interstates was too good to pass up