all i know is that guys with big stereos love em

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Nah there good you can run twin 44 amp mags on them for a whole meet without charging.

Ask CA18 Man he uses one.

whoever says they are #### are ####ed in the head best batteries ever.

all batteries have their good and bad points.
you cant put a(conventional) lead acid battery inside because of the gases they put out.
they are good and cheap,and if you get a marine type,which can be cranked and slowly discharged,you do get the best of both worlds.
odessy and all other dry cell batteries,which can be mounted inside,are only good as cranking or high current output applications.their main benefit other than size is they can be re-charged very quickly,at least twice as fast as lead acid.
odessy batteries do work better on smaller engines.v8 engines with high compression,high locked out ignition timing and high-torque starters really kill odessy batteries.especially when they are running either a crappy low output alternator or none at all.
i run and would recommend a marine type mainly because they are cheap,reliable and you can get them anywhere.good luck finding an odessy battery when your alternator dies and you have a flat battery.you will be coming home on a tilt tray.