House batteries off gassing with Tripp Lite

Gdetrailer wrote:

dougrainer wrote:

Gdetrailer wrote:

dougrainer wrote:
The Walmart batteries you are using ae AUTOMOTIVE design batteries. NOT deep cycle RV batteries. THIS is your problem. Get RV Deep cycle batteries. Doug

Actually, if OP is using group 27 "Marine/RV" battery they are a "combo" use which is intentioned for starting AND TROLLING MOTOR useage.. Kind of a half breed which works half as well for both uses (IE not very well for either use)..

I would however agree with the idea of going with a PURPOSE BUILT DEEP CYCLE battery instead of a combo RV/Marine.

I suspect the OP is expecting way to much from the current selection of battery they have..

The reason for this is a group 27 RV/Marine battery typically has about 80 Ahr of capacity.. Because it is a combo battery, deep discharges to 50% of capacity (40 Ahr) WILL drastically shorten the life of that battery in just a few cycles..

Those combo batteries should not have more than 16 Ahr-20 Ahr removed IF you want to maximize the battery life.. Removing 50% or 40 Ahr will result in replacing the battery every couple of years..

40 Ahr can be easily removed by running a RV furnace overnight and a couple of hrs of some lights and perhaps a few minutes of water pump usage.

On my first TT, I ran one group 27, it just barely had enough capacity to run the furnace by the time I got up in the morning..

Fast forward to my current TT, I use a pair of 6V GC batteries which powers my home fridge conversion, furnace and lights and I STILL have considerable capacity left in the morning.

He did not state he was using the DEEP CYCLE Walmart 27 series. I was going by what HE posted and the batteries listed by what he stated are Automotive batteries which would cause his problem since he stated from day 1 he had the problem. Doug

Doug, no need to get upset.

Just pointing out that even though the OP DID NOT STATE "DEEP CYCLE" that when someone mentions group 27 AND it is used in a RV that they most likely have a "RV/Marine battery"..

And that a RV/Marine battery is NOT a real deep cycle, it is a HYBRID design which has compromises.. It does neither starting or deep cycle application very well..

It will not survive true deep cycle usage if drawn below 50% unlike deepcycle batts like GC series which can handle 80% DOD and live a long life..

I am not upset. What YOU assume is just because it is a RV forum does NOT mean they know what they are doing. From his post it is obvious he does not understand charging and type batteries. Especially when he just stated a gallon of water added. THAT means the batteries are bad and cannot resume normal operational parameters. Doug