New Chassis Battery time Cat C7

I replaced the batteries with new Alliance batteries are from a near by truck repair and parts store for $68 and some change each. The pair cost almost half what I was quoted everywhere I called.

noteven wrote:
Gundog take a look at Amp-l-start

It is a small diode isolator that will supply charge current to your starting battery any time the house batteries are receiving charge current.

I ordered this one.

Charger

Gundog take a look at Amp-l-start

It is a small diode isolator that will supply charge current to your starting battery any time the house batteries are receiving charge current.

11178adm wrote:
all group31 batterys have have threaded studs. truck dealers will carry the house brand from the manufacturer that they represent usually at a reasonable price. I have had Alliance (freightliner/western star) brand in my mh for 5 years with no problems.

That is what I am replacing Alliance Armor Plate AP31SXHD1000 I don't know how old they are no one punched the date codes on them. When I bought the coach 1.5 years ago the previous owner had said he just changed out the batteries in both the chassis and house. I have now had to replace both sets of batteries the house batteries last year now the chassis batteries. Only one of them went bad but it was draining the other one since they are banked together.

I have to make a correction to the above comment the Armor Plate are not made by Alliance they are made by the Philippine Battery Company they probably came from Les Schwab. I did install new Alliance batteries.

Trackrig wrote:
Go get the Interstates at Costco.

When my friend had to replace the batteries in his HD pickup truck, he was surprised that the Interstate batteries at Costco had the same specs, the same warranty and were about $25 a piece cheaper.

all group31 batterys have have threaded studs. truck dealers will carry the house brand from the manufacturer that they represent usually at a reasonable price. I have had Alliance (freightliner/western star) brand in my mh for 5 years with no problems.

Trackrig wrote:
Go get the Interstates at Costco. My first set lasted seven years and would have gone longer if a stupid shop hadn't left things on for a week. Might call an Interstate Distributor and see if they'll have any Independence Day sales and Military discounts. Last year the distributors were cheaper with the special sale than Costco was.

Bill

I called my local Costco they don't stock the right batteries but can order them at a much higher cost than other places. There is a large truck repair place a few miles from the house that has batteries for cheaper than any other place I called. I need to make sure they have the right post on them mine has studs with some really nice connectors that hold multiple cables. I need to make sure the batteries they have are that type with studs and not round posts they are closed today so I will check tomorrow.

I am also going to call the Interstate distributor and see what they have they are closed on the weekends.

Big Katuna wrote:
My 05 Expedition chassis batteries charge when plugged in.

Mine don't I checked it with a volt meter. One of the 2 batteries went bad I could plug in a charger and build up the one and it would start but then it would go dead. I pulled both batteries and charged them separately one holds a charge and the other one doesn't hold a charge. The bad one was draining the good one when they were paralled together. After I removed the batteries I checked voltage on the cables and there was none with the MH plugged in and the house batteries were charging.

I always thought that the chassis batteries were charging when it was plugged in like the house batteries were.

My 05 Expedition chassis batteries charge when plugged in.

^^^ This. The ones in our current MH came from a heavy truck dealer. They were about 1/3 less than the normal suppliers and no core charge.