I've had the 545MJ since June 2008. See original post:
http://www.r3owners.net/common-issues/3165-battery-woes-2.html#post37837
No problems whatsoever! I use a smart charger from West Marine (had it from my JetSki). Charge at 14 amps on the AGM setting. 3 weeks of no riding and it doesn't even need a top off. It went right into float mode after 10 seconds of charging and held 12.9 to 13.3 volts. It has proven itself so I don't worry about keeping it on the float charger all the time. If anyone has experience with the Odyssey charger, I'd like to know if it is much better than the standard smart chargers.
Always had a problem with the factory battery crapping out after 3-5 seconds of cranking whenever the temp was below 40F. Not so with the Odyssey. Sometimes it takes a good 5-7 seconds of cranking to get the beast lit up but the 545 takes it in stride.
I highly recommend the 545 MJ because no batt box mods are required, the toolkit stays, and it has survived longer than any of the Yuasa's. The metal jacket is essential to maintaining proper plate clearance when it gets hot. Good thing the 625's are so tight. They are basically getting the metal jacket from Triumph.
