I just switched out the old lead/acid battery in my KTM LC4E with one of these new fangled lithium batteries. The 8-cell cranks over the 640 just fine at 45 degrees, better than my older lead/acid battery. I did a little measuring and checked out the specs for the Antigravity small case before I ordered and it looked like I could lose weight and gain storage.
OEM lead/acid in place:
Here is the comparison:
Yup, that Antigravity fits in the battery box nice. Look at all the empty space:
Enough room for a spare 21" tube. That will come in handy some day:
So far, so good. As a side benefit, it seems to have cured the bike's manic episodes too. Now, where's my trickle charger? Oh, that's right. I don't need it anymore.