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 > New batteries I have some questions?

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Gundog

Ridgefield, Wa

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Posted: 02/17/19 05:33pm Link  |  Quote  |  Print  |  Notify Moderator

I plan to change out the house batteries in my 05 Expedition. The current batteries were boiled dry prior to my owning it.

I want to put on all new cables and a Flow-Rite watering system in. The cables on it now don't fit well and some have to be disconnected just to check the fluid level in the batteries. I plan to put on new cables cut to fit properly.

I have the tools and skills to build the cables but I am not sure what size cable they use I am guessing it looks like 2/0 welding cable.

I plan to buy the 6 volt Interstate batteries sold at Costco. I believe that is where the batteries that are in it now came from they would probably still be good if they would have had the fluid level kept full.

I am also thinking of putting in a separate charging system on the batteries when it is stored. I leave the MH plugged in my inverter charger has a button that turns off charging to the battery bank. My thought is to turn off the charging through the inverter and using a better battery charger that will not over charge the unit.

I am not really wanting to buy a new inverter since it works fine other than over charging. This auxiliary charger would only be used when the Mh is stored for long periods of time and not used when we are using the unit.

* This post was edited 02/17/19 05:52pm by Gundog *


2005 34' Expedition Cat C7 Allison 3000

MountainAir05

New Mexico

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Posted: 02/17/19 05:47pm Link  |  Quote  |  Print  |  Notify Moderator

We use a Smart Charger to do it. It is made by Ctek

https://smartercharger.com/ It has been in use for the past 7 years with our batteries and no issues. It is not made for batteries that need a heavy charge. So have to be charged up and will maintain them very well.

Trackrig

Spent the summer in Conconuly, Wa, MH now in Vanco

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Posted: 02/17/19 06:03pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 2005 Fleetwood Excursion 39S which is close to your DP. You probably also have Xantrax 458 charger. I live in Alaska, but the DP is stored in AZ under covered storage. I find far more battery water is used / evaporated during storage when it's not plugged in due to the heat. I don't know if you have a heat problem at your location or if you're on the wet side of WA.

When I pick up the DP next week, one of the first things I always do is check the battery water level even though I topped them off when I put it in storage.

If you wanted more amp hours, you could go to Trojan 125 batteries which are taller like I did because we dry camp some. I'm not sure the Trojans are worth the extra money. The Costco batteries are a good battery for the money. They won't last as long as the Trojans, but then they don't cost near as much either. You can buy at least three sets of Costco batteries for what two sets of Trojan 100s go for.

Anyway, after you put new batteries in, continue to monitor the battery water level on the new charger to see how the water usage compares to the Xantrax. If the water usage is less, then it was probably the charger. If it's about the same, then a lot of it was probably evaporation like mine.

Bill


Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.


theoldwizard1

SE MI

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Posted: 02/17/19 07:30pm Link  |  Quote  |  Print  |  Notify Moderator

Gundog wrote:

I have the tools and skills to build the cables but I am not sure what size cable they use I am guessing it looks like 2/0 welding cable.
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.
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I am also thinking of putting in a separate charging system on the batteries when it is stored. I leave the MH plugged in my inverter charger has a button that turns off charging to the battery bank. My thought is to turn off the charging through the inverter and using a better battery charger that will not over charge the unit.
The size of the cable depends on the highest current draw and the distance. What does your inverter manufacturer recommend ? (2/0 sound like over kill.)

How will the auxiliary charger be connected and how much current will it send to your battery bank ?

It sounds like you will have at least 2 or 3 connections for +12V (inverter/charge, DC distribution panel, auxiliary charger). I might be better to install a shield positive bus through a 100A fuse to the positive terminal on the battery. Also a good place to installed a Master Cut Off Switch.

Sam Spade

North Central Florida

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Posted: 02/18/19 06:27am Link  |  Quote  |  Print  |  Notify Moderator

I think that deep cycle AGMs are well worth the extra money.

The "watering system" is just something else to worry about.

That disconnect switch disconnects the batteries from everything.

IF....you don't really need power during storage, there is no good reason to leave the RV system plugged in at all. An automatic tender type charger would work fine but I find that my rig will sit for 3-4 months and my AGMs are perfectly happy with no charging at all, IF they are fully charged going in.

And finally, loose cable ends can often be fixed without putting on new cables. Sometimes just new bolts. Sometimes new ends.

Good luck. Try not to make things more complicated than they ARE.


'07 Damon Outlaw 3611
CanAm Spyder in the "trunk"

wa8yxm

Wherever I happen to park

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Posted: 02/18/19 07:48am Link  |  Quote  |  Print  |  Notify Moderator

You said the batteries were boiled dry before you bought it.. What coverter does it have.. YOu may wish to do a converter upgrade.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


Big Katuna

Deland, FL

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Posted: 02/18/19 09:41am Link  |  Quote  |  Print  |  Notify Moderator

Hi Gundog. I have the same problem with my 05 38N. I too, have the Profill but I still forget to fill monthly. The separate charger may help. I’ve never gotten more than five years out of batteries.

Which brings me to my next topic. My Maintenance free engine batteries are in year 8 and still spinning her just fine. My house batteries are five and are shot

We rarely dry camp so I’m going to replace the four sixes with two big dual purpose maintenance free 12 volts. My wiring is worn out anyway.

They should work fine for the led lights and flat screen tv the few times we do that.


My Kharma ran over my Dogma.

Gundog

Ridgefield, Wa

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Posted: 02/18/19 09:45am Link  |  Quote  |  Print  |  Notify Moderator

wa8yxm wrote:

You said the batteries were boiled dry before you bought it.. What coverter does it have.. YOu may wish to do a converter upgrade.


I was hoping to avoid that expense.

Big Katuna

Deland, FL

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Posted: 02/18/19 10:02am Link  |  Quote  |  Print  |  Notify Moderator

It’s a good inverter. I believe it has a float phase. Switches over well; tv doesn’t flicker.

pianotuna

Regina, SK, Canada

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Posted: 02/18/19 10:02am Link  |  Quote  |  Print  |  Notify Moderator

Hi,

My battery filler system was made from rather friable plastic. It broke when it was being installed. I'd go to used telcom AGM jars. Mine are adequate to my requirements after 4 years of full time.

Most smart chargers are notorious for not completely recharging the battery bank. That leads to sulphation. I'd go with the best recharging system possible.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

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