Forum Discussion

brushwood's avatar
brushwood
Explorer
May 20, 2016

Battery and cahrger replacement advice

Let me preface this by saying I'm pretty new to this so I'm still learning how the electrical system in my travel trailer works.
I recently bought a 2004 Gulfstream Amerilite BHL travel trailer. My wife and I are taking four months off starting in July to travel around the western US. We'll be spending the majority of our time in camp sites that do not have electrical hook ups. We'll probably spend 6 days out of the week without hook ups and 1 day per week somewhere with shore power, city water, etc. so we can take real showers, find a laundromat, etc.
We've taken the trailer out camping to try it out and see if there is anything we need to fix before hitting the road for good. At the moment, it has a Napa 8240 marine battery http://www.napaonline.com/napa/en/p/NBE8240/. The reserve capacity of that battery is 120 which, if what I've read is correct, is roughly equivalent to 70 amp hours. We'll be spending our days hiking and probably won't be staying up very late with the lights on. I am mainly concerned with being able to run the water pump and the furnace fan. We won't need to run the heat a lot but we'll be at pretty high altitudes at times so it can get pretty cold even though it's Summer and Fall. We could probably do OK with 70 AH but I want to upgrade. I went to Costco today and took a look at the golf cart batteries they sell for $84. Two of those would give me 208 AH. They also have a marine battery (which I know is not a true deep cycle battery) with a reserve capacity of 160. I found a forum post where someone claiming to work for interstate says those batteries are 120 amp hours, which seems like a high estimate to me. Based on the rule of thumb conversion (which I know is not precise), it should be more like 100 amp hours. I am leaning towards getting the golf cart batteries but I'd be interested in the opinion of someone more experienced than myself.

Regardless of what direction I go with the batteries, I really need to upgrade the converter/charger to have any chance of keeping the batteries charged. I have a Honda eu2000i generator that we'll bring with us. The travel trailer currently has an Elixir ELX-45 converter/charger. I was thinking of replacing it with the WFCO (WF8945PEC) http://www.amazon.com/WFCO-WF8945PEC-WF-8900-Converter-Charger/dp/B00K8D9HJ4. It looks like it should be a pretty straightforward replacement. Any opinions on it? Should I be looking at anything else?
  • If you can, go with two 6v batteries. You get the amps of 1 battery so don't think that two 230 a batteries is 460 amps.
  • gbopp wrote:
    Have you ever read ***Link Removed***?
    It may help you understand the 12 volt system.
    Enjoy your trip.


    I did read it and it was REALLY helpful. It's the only reason I know the little amount I do.
  • mbopp wrote:
    +3 for NO on the WFCO. The odds-on favorite replacement is a Progressive Dynamics or IOTA, both with the charge controllers. Call Randy at Best Converters and ask him about the Boondocker converter also.
    Yes, dual 6V golf cart batteries would be your best bet.
    BTW - the Elixir you have is a single stage, fixed output converter. Lousy for charging off a generator.
    Do you have LED lighting in the trailer? LED's cut power consumption by 80% or more.


    I'm glad I asked about the WFCO. I was also looking at a Progressive Dynamics converter/charger but was leaning toward the WFCO since it is a drop in replacement. I'll call Best Converters and see what they recommend.
    I just ordered some LED light bulbs to replace all of the ones in my trailer.
  • The furnace is what is going to be the biggest battery drain. I suggest not running it overnight -- get a down comforter for the bed. Even if the temp drops below freezing, your water lines inside the trailer are not going to freeze overnight.
  • +3 for NO on the WFCO. The odds-on favorite replacement is a Progressive Dynamics or IOTA, both with the charge controllers. Call Randy at Best Converters and ask him about the Boondocker converter also.
    Yes, dual 6V golf cart batteries would be your best bet.
    BTW - the Elixir you have is a single stage, fixed output converter. Lousy for charging off a generator.
    Do you have LED lighting in the trailer? LED's cut power consumption by 80% or more.
  • brushwood wrote:
    I have a Honda eu2000i generator that we'll bring with us. The travel trailer currently has an Elixir ELX-45 converter/charger. I was thinking of replacing it with the WFCO (WF8945PEC) http://www.amazon.com/WFCO-WF8945PEC-WF-8900-Converter-Charger/dp/B00K8D9HJ4. It looks like it should be a pretty straightforward replacement. Any opinions on it? Should I be looking at anything else?
    No on the WFCO. Notorious for not going into boost mode when you need a fast charge to minimize generator run time.

    You want a Progressive Dynamics with Wizard or IOTA with IQ controller only.
    55 to 60 amps is fine with 2 batteries.
  • Two 6V's will be the best for your situation unless you have a big budget and can't maintain batteries. In the latter case two large 12 V AGM batteries will do a good job.
    There are numerous complaints about WFCO converters on this Forum. Many change them out for Iota or Progressive Dynamics converters. I have a working PD converter that is 45 years old and works perfectly. You can guess what my endorsement would be.

    Bestconverter.com is a Forum favorite for converter purchases because they have excellent customer service.