The only experience I have with Optima batteries is with our boat (5.7L Mercruiser) where I have two Blue top marine deep cycle batteries and so far good service. Agree with the "over-priced", that's over $600 of over-priced deep cycle batteries sitting hidden in a corner of an old boat. You have to wonder why with all of the decades and decades of poor performance and expense with batteries in general would anyone want to buy an EV