Sounds like BS and runs 100% counter to what Optima says. One of the benefits of the Optima is its low discharge rate.

"Depending on storage temperature, the OPTIMA can usually sit for 8 to 12 months and start most vehicles. " - note that this implies being disconnected.

The optima batteries are Absorbed Glass Mat (AGM). One of the features of AGM is its resistance to sulfation.

-mick