It was easy to mount. Did NOT use factor battery posts but you can get some adapters that will use them that add on.

There are actually some good options out there

Hawker G13EP (Low power only 10.8 lbs and still cheap).
Odyssey PC625 (There is a lighter lower power version) 13.2 lbs
Hawker G16EP (More power than the PC625 one pound heavier).

Trey