Don't know for sure. But when I was at the dealer for some warranty work, I asked about battery replacements and he said it is a battery specific to our cars.
Also there was a thread on this web page about a month or two back. It sounds like the battery has special venting and that the vent system is a sealed one, makes sense, don't want to vent hydrogen into the trunk or cause corrosion of the trunk. The thread said that the vent system is typically corroded by the time you replace the battery so you have to replace the vent system also.
The cost of the special battery is somewhere around $100 and the vent system was something like $200. Another argument to convince me to stop buying cars with "special" features.
Good Luck, and let us know if you find better alternatives.
Jim Henderson