Based on the search results, the Samsung Galaxy A10 appears to have a stronger battery than the A03s. The Samsung Galaxy A10 listing mentions nothing about the battery size, but no results were found for battery cases or chargers, suggesting the battery life may meet basic needs. The A03s, on the other hand, has several search results for battery cases and chargers, implying the battery is not as strong. Both phones seem affordable options, but if long battery life is a priority, I would recommend choosing the Samsung Galaxy A10 over the A03s based on this analysis of accessories in the PriceCheck search results. Of course, it's always best to research real reviews and specifications as well. Please let me know if you need any other information to help with your decision!