House Battery Wire Gauge

[Kammy]

I have a 2006 Winnebago Sightseers 26P and it's time to replace the house batteries.
I was using Interstate 100AH AGM's but they are fried. They will drop from 13.75 to 10.75 in less than 1 hrs. when I shut off the electricity. They read fine on the Blue Sky 2000E Solar Booster Controller when plugged in and the solar panels charging them but they just plan don't hold a charge! Just a note: I have two (2) solar panels one at 130 watts and the other at 135 watts. We do some extended boondocking.

• I am planing to have 2-6v T-105's installed. It was suggested to me that I have them wired with #2 gauge wire at a minimum or better yet #2/0 welding cable. I may be expanding the house batteries from 2 to 4 shortly. Is this wiring the proper gauge for hooking up batteries?

• Also, will the house battery tray be able to handle four (4) T-105's if I move the Chassis Battery out of this compartment?

• I am also having an Olympian Wave 8 Catalytic heater hooked up to the oven propane line with piping to come up just underneath the sink and then a flexible 6' hose with a quick disconnect to the heater. I am also having a gate valve put on the hose at a point just behind the quick connect. Just looking for some feedback on this set up or advice. Thanks.

I am having a local RV shop do the work and I want to be able to tell them exactly what I want.

[RJay]

Kammy,
The 2/0 copper welding cable is good for when you add the two additional batteries. Keep your runs as short as possible.


As for your battery tray, take the measurements from the T-105 battery specs and measure your battery tray. You may have to play with the orientation of the batteries to get them to fit.

[DAN L]

Quote:

Originally Posted by Kammy I have a 2006 Winnebago Sightseers 26P and it's time to replace the house batteries. I was using Interstate 100AH AGM's but they are fried. They will drop from 13.75 to 10.75 in less than 1 hrs. when I shut off the electricity. They read fine on the Blue Sky 2000E Solar Booster Controller when plugged in and the solar panels charging them but they just plan don't hold a charge! Just a note: I have two (2) solar panels one at 130 watts and the other at 135 watts. We do some extended boondocking. I am planing to have 2-6v T-105's installed. It was suggested to me that I have them wired with #2 gauge wire at a minimum or better yet #2/0 welding cable. I may be expanding the house batteries from 2 to 4 shortly. Is this wiring the proper gauge for hooking up batteries? Also, will the house battery tray be able to handle four (4) T-105's if I move the Chassis Battery out of this compartment? I am also having an Olympian Wave 8 Catalytic heater hooked up to the oven propane line with piping to come up just underneath the sink and then a flexible 6' hose with a quick disconnect to the heater. I am also having a gate valve put on the hose at a point just behind the quick connect. Just looking for some feedback on this set up or advice. Thanks. I am having a local RV shop do the work and I want to be able to tell them exactly what I want.

if you go to lifeline agm's as i did, you can lay them on their sides so you can get 63% more capacity in the same space. my batteries weigh 90# each.