To quote Lifeline with regard to current acceptance...
"we've never seen a case of thermal runaway with our batteries"
And after charging the XT and 2-story innumerable times at maximum charge acceptance at 14.4 volts...
Neither so much as gained three degrees Fahrenheit at the copper posts.
It when a person starts fooling around with the 14.4 volt ceiling that bad things can happen. Charge the same battery under the same conditions with 15.0 volts and it would at least try to overheat the battery.
Thermal Runaway happens with gelled electrolyte and it can happen with a flooded battery. But it takes dedicated ignorance to make it happen. I have to asssssssssume readers of this thread do not need training wheels when it comes to common sense..,
"Garsh, I was only after better gas mileage. I was sure that putting 200 pounds of air pressure in the tires would work -- can you press that button and raise the head of the bed up some more?"
This is why I established strict parameters for absorbsion charging a flooded battery. Charge at 14.8 volts until all cell's electrolyte starts bubbling then reduce to float voltage.
I'm surely not going to recommend something that would damage a battery or inflict personal injury. I do not guess at this stuff, and it is not one-time-gyro-gearloose deduction. To become valid, a protocol must be universally acceptable and repeatable.
But then if someone is overly worried, follow the hallucination of failed lawyers and destroy a perfectly good battery. Ecological suicide is preferable to having any possibility the option to think and decide. That's GREEN! No, wait a minute. That's BROWN!
I earnestly suggest *actually* downloading then *reading* the PDF Lifeline manual. These folks like those at Rolls & Surrette are sharp. They offer definitive statements and if anything they are overly strict about maintenance and safety. The Lifeline is unique. There isn't a competition like with lesser AGM batteries. I smirked when they declined to have their battery represented by even Rolls & Surrette under the Rolls label. They are my kind of people.
Some products can be compared to others competitively. Lifeline and Rolls flooded are not among them. Like CREE LED chips -- they are at the pinnacle looking down upon the sea of wanna be's.