Thor Forums

[RACarvalho]

Hello,
I'm trying to identify if the batteries in my coach are shot or not.
They are the original batteries that came with the coach - 2 x 27Ds - and are ~ 1 1/2 year old.
As this is my first MH, I did deplete them 100% a couple of times by mistake...

Here is a load test I did to have an idea:
W/o load the voltage was 13.6V (after 1 week on shore power) with shore power connected.
I turned off shore power then I turned the furnace, all the lights and 3 TVs on and the voltage dropped to 11.5V.
I waited 5 minutes and the voltage was steady 11.5V.
AS far as I know, 11.5V is a discharged battery...

Is this normal or my batteries are shot?

Also, in ~ one year of ownership I saw 14.4V (Bulk charge) only twice... Is this normal or another indication the batteries are shot?
I ask this because the MH is at home, connected to shore for one week and the voltage is kept at 13.6V (bulk?)

If these batteries are shot, I'm thinking on buying 3 x VMAX XTR27-110...
Any feedback on these batteries or recommendations on good batteries?

I'd like to have 3 x group 31s but Thor welded the battery trays and they can't hold anything bigger than group 31s...

Lithium is out of question.

Thank you very much for any input!