Irrespective of where you get your battery from, It's worth noting the difference a fresh one makes. By all accounts- receipts and anecdotal- my oddysey was but 3 years old, and I know it wasnt on a maintainer for most of its previous life, and out in the cold with me, so no surprise that it gave up the amps last month. I'm thrilled now to be able to come back to a car parked for a week in all weathers, and have a strong start up battery, well worth the £150 odd cost of replacement, and I may get some LED\solar use out of the old one yet.
Good point concerning regular battery replacement and that exotic ones can have life diminished just as easily as cheaper ones. You should need to pay no more than around £60 for popular branded one that should last for at least 5 years. Regular replacement allows greater reliability and is cheaper in the long run.
