Can an Optima yellow top battery be recovered from 10.9 volts state of charge in storage?I have charged it with the 3 stage charger converter for 24 hours, disconnect and allowed to rest for 24 hours. Reads 12.2 volts. Connect the TC wiring to it - the only load I am aware of is the display on the stereo and the CO monitor. Voltage drops to 9.8volts. Is this battery kaput?It's mate was at 12.2 volts after storage, charged by itself for 24 hours, rested for 24 hours, and has sat at 12.66 volts for 3 days while I fiddled around with the other one. Does not change when connected to the camper wiring by itself as described above.

Hi,Pretty much it is a goner--but seeing as there is nothing to lose see if you can do a "recondition" charge.

https://www.youtube.com/watch?v=Slqd73ZOQvI from the horse's mouth!

Hit it with 15 volts for a couple hours. Otherwise let it go.

I've been through 2 yellow tops on two different vehicles. Never got more than 2 years out of them. Not impressed at all.

Optima battery question | Good Sam Community

pnichols
Explorer II
Mar 29, 2014
I have a 12-14 year old Group 31 (90 amp hour) yellow top Optima model for our boat that is no longer available and is still going strong. It holds voltages in the high-12.XX volts/low-13.XX volts range when sitting in storage.

However, I've never let it sit discharged in the 10.XX/11.XX volts range. I think that the newer yellow top Optimas may not be built to the quality level of the older ones. Didn't Optima batteries used to be made in Europe way back when ... I seem to recall that they originated in a Scandinavian country?

To the OP: Considering what they cost .... I'd patiently try several different things to recover it. Since Optima batteries are AGM "dry" batteries, they may be more responsive to recovery techniques than regular wet lead acid batteries.
MEXICOWANDERER
Explorer
Mar 29, 2014
D. O. A.

Save your breath and kWh.
Learjet
Explorer
Mar 29, 2014
I've been through 2 yellow tops on two different vehicles. Never got more than 2 years out of them. Not impressed at all.
time2roll
Nomad
Mar 29, 2014
Hit it with 15 volts for a couple hours. Otherwise let it go.
pianotuna
Nomad III
Mar 29, 2014
https://www.youtube.com/watch?v=Slqd73ZOQvI from the horse's mouth!
mena661
Explorer
Mar 29, 2014
Sounds like it's gone to me.
pianotuna
Nomad III
Mar 29, 2014
Hi,

Pretty much it is a goner--but seeing as there is nothing to lose see if you can do a "recondition" charge.