AGM 11.06v after charging. Hopeless?

isn't this the one, that ran your fridge, your Cat heat mat and other items, in the old van ?

its dead, good only for core value at the recyle yard
I will say that you worked the poor thing to death, and it died respectfully doing yoemans duty, and should be given an honorable burial fitting its demise
it died with valor working way to hard for a battery that size

you do realize, that each (1) of your new batteries is approx (3) of this one

I would charge it for two hours with 14.4VDC being applied to it with at least 20AMPS DC Current available to use... Then after the two hours of being on 14.4VDC then drop down to 13,6VDC and charge for another hour... Then let it settle down and see what you read then...

This is what i do here to get from 50% charge state to 90% charge state.

If I want to get to the 100% charge state I have to leave the 13.6 VDC voltage on the battery for around 12 hours...

Try that before giving up on your battery...

If you have been just topping it off for a couple of years then it most likely will not recover from this.... A long charge using 13.6VDC will do wonders for it... This is after you do the 14.4VDC initial charge for two hours to excite everything....

This is what is happening to my three 12V batteries connected in parallel...

Roy Ken

shot :(

Remind us how that battery has been living for the last few years. ISTR you have both 24 and 12 in some way. This is a 12 I assume. What measurements have you taken or what have you seen as a performance progression over the last few years to know if this battery has been going down hill as opposed to a sudden drop?