Add this as a cheaper alternative to the PC680
New Sealed Battery Option - Cheaper, Better!
Its the exact size as the PC680, and will fit the Sector 111 bracket. It's half the price, and has more reserve.
It's gone 3 1/2 weeks sitting in the garage and I have still been able to crank it over with ease (My PC680 would last 10-14 days).
Highly recommended!