As an owner of a Prius I have found some parts that you might want.(see below)
We have tested them on our Prius and been 12 volt selling batteries for hybrids since 2005. The Optima deep discharge batteries work great on a hybrid. (These batteries are chemically configured to allow more discharges instead of lot of cranking amps. You do not need cranking amps on a hybrid because the high voltage battery cranks the engine.)
"A short time ago I sent an email requesting the USPS tracking number. I am now pleased to inform you that this information is no longer necessary, in light of the fact that USPS has already delivered my Prius battery. In my opinion this is nothing short of miraculous! Kudos to you and your shipper, the U.S. Postal Service!
The battery was very thoughtfully protected within the Priority Mail box, by the way. Thanks for your expert assistance!
J. H., Clarksburg, MD
P.S. I ordered this same battery about a week ago, from Amazon, whose Marketplace at that time was defaulting to a competitor of yours. Four days later, I received word from them that the battery was not actually in stock at their warehouse, but would arrive sometime within the next two weeks. When I pointed out that their online inventory through Amazon Marketplace had indicated that it was in stock at the time of my order, and that it seemed like they could have informed me otherwise in something less than four days, they got quite a bit "huffy" about it (putting it mildly). Anyway, more to the point, in less time than it took them to tell me that their own inventory control was deficient, you actually put a brand new battery in my hands, and shipped it all the way across the nation to get it here. I won't forget it!"