i edited my previous post heavily if you care to look.
what does the optima weigh? on the same note, what does a conventional battery weigh?

 

Conventional batteries weigh somewhere in the 30-40 lb area, I think the stock battery for FC's was in that range. Currently I have an EverStart that weighs about that much, my Yellowtop is heavy as hell, but I haven't weighed it by itself yet. One sec I'll go do that, since it's out of my Escape currently while I do some work (CAI, superchips, etc )

 

Ok, my Yellowtop in my Escape weighs 44.4 lbs according to my scale. Damn that's heavy.. I'd never put that in my rx7 heh.

 

tell me something that's as good as that yellow-top and lighter, though. i look at the battery like i look having a spare tire (casio, you dont have a spare tire in your car or a jack), if it comes down to me being stuck, that could make a difference. i'm not gonna stress 20 pounds for a battery that might not perform when absolutely needed.
how about this, lightweight in the summer; dry-cell/gel-type (optima, etc) in the winter.. ?

 

That's a very good point, and the main reason I'm not going with a motorcycle battery like so many other people (including 3rd gens) do when going with lightweight batteries. The battery I'm looking at, the batcap, was able to start and run a Chevy v8 no problem, they did this to prove that the battery could perform by itself rather than an extra battery for audio enthusiasts. The battery was left in the chevy for about a year I believe, and started it every time no problems, so that's why I chose this one.


*EDIT*
Also, I emailed them asking if it would be safe and ok to use it as the main battery, and they said I shouldn't see any problems in hot or cold weather.

 

Yeah those will add a few extra pounds to consider...