Optima battery question
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 ho...
Forum Discussion
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.
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.
