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Old 06-19-2007, 09:25 PM   #57
Canuck328i
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Join Date: Jan 2004
Location: Happyland, Ontario, Canada
Posts: 1,173
My Ride: 09 Altima Cpe
The biggest difference between the listed batteries and a run-of-the-mill battery is the venting. There are many batteries that will physically fit but only a few have the venting moulded into the top of the casing to vent to the tube. Regular batteries just have venting out the edges of the cap, so no way to send the gases down a tube to the outside of the car. This is VERY important.

I just did my battery last week. We don't have Autozone in Canada so it has been difficult to find the venting battery, so I ended up getting an Exide spiral wound battery (same design as the Optima). These batteries are completely sealed so they do not need external venting. They are more pricey but have great warranties and lots of power, great for ICE equipped cars.

Mark
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