You can get a load test just about anywhere that sells batteries. Autozone, Napa, and other places do it for free, hoping to sell you a battery I'm sure.... the thing is, your battery should be at full charge when the load test is done or it won't really mean much and most places will tell you this if they are reputable...
I got my last couple batteries at Autozone- the Everlast batteries and they seem to be holding up well. My hot rod gets an Optima AGM battery because it sits a lot and I hate dealing with batteries that can't hold a charge. Funny thing is, last couple times I bought batteries at Les Schwab I had the same problems you're having and started buying my batteries other places after that and the issue stopped. Coincidence?
Bob
