The ODYSSEY SBS J-16 battery seems to be a pretty good deal so far...
It weighs about 11 pounds less than the Gill battery that I had in the plane. At station 0.0 ( Which works out great with the new slightly heavier Power Flow exhaust )
We used foam and a couple pieces of paneling to shim it into the existing battery box.
No changes to anything else.
I was told that it was already charged in the box, So we did not add any charge to her...
After installation the plane was in the hangar for another week and we moved the flaps several times, and played with the lights on several occasions while I hunted down wiring problems.
Then she was pushed out into the cold for awhile and I went out a couple hours later and the engine turned over with no problem. I have flown around a couple times now and started it a few times in a row to see how the Odyssey holds up... So Far it is a HUGE improvement over the gill.