| I ran with an Odyssey for a year in my M3; I believe it is the same battery as the Genesis, or same style, whatever. It weighed 10 lbs vs. stock 45 lbs and about 1/4 the size. Never had a single problem cranking no matter how cold. PITA to fab a bracket though. I'll likely pick one up for my 350Z as well. 
[ http://www.batterymart.com/battery.mv?p=ODY-PC680MJ ]
"Keep the shiny side up!" SCCA member# 296913 (WNY region) BMWCCA member# 306145 (GVR region) 2004 PPW 350Z Enthusiast 6MT: on order A memorial of sorts. Please visit
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