[S201]

Is it the stock battery or after-market? Even if you bought it one year ago, when was it filled with acid? Many auto parts stores sell sealed lead-acid batteries as "new" when they've been sitting on the shelf for a year and the clock starts ticking when the acid goes in. You can get higher quality AGM batteries that will last far longer, but know they are quite expensive. Alternatively, you have a parasitic battery drain going on with your car.