KenMac,
I do intend to keep the Zero for a while. I haven't kept my bikes long in the past since I can't seem to find exactly what I want. I started with the Ninja 250 and knew shifting wasn't for me and sold it 2 months later. Than I got a Chinese automatic motorcycle that I learned how to ride on and took my MSF course test with, but it was only 150ccs and topped out at 70mph on flat land. Would drop to 50mph on a steep hill, so really didn't keep up with traffic. Sold it 5 months later. Now on to my Mana, will have that a year in May, but looking to sell so I can get my Zero. I like it a lot but it is a little heavy for me 507lbs or so, and I had it lowered but still can't flat foot it which makes me feel a lot better when I can. Overall haven't kept my bikes long at all, but looking for my forever bike and think that the Zero might be it.
I also agree with you on the battery, I am going for the 12.5 as well and hopefully I sell my Mana soon and have my Zero by May!