I've worked in a shop for a couple years now, and to tell you the truth, the Optimas do not sell very well. People just do not understand its features. So we have plenty of Red, Yellow, and Blue tops sitting around that are well over 6 months old. Advance is the same way. When you go to buy an Optima, ask the salesperson or look on the manufacture sticker on it to find out how old it is. Also, do not use a trickle charger or a conventional battery charger on an Optima battery. Sure it will work for a little while, but soon enough it will be burnt up. It takes a different pulse charge than other batteries. Alright, and for the alternator. If you have a multimeter, take the leads and put them on the battery terminals and take your hand and hold the throttle to around 1,500-2,000 RPMs for about 15 seconds and check what kind of voltage you get. It should be somewhere around 13.7-14.2 volts. Hope this helps you out.
Kevin