Based on this product's specifications, here are some alternatives and similar models
Battery CoreParts MBXSA-BA0155 for Samsung NP-540-JS03AU
Summary description:
The CoreParts MBXSA-BA0155 battery is designed for Samsung laptops including NP-540-JS03AU, NP-R540, and NP-P210 series. It provides reliable power and longevity, ensuring your device runs smoothly. With high compatibility and quality construction, this battery is an ideal replacement to keep your laptop functioning efficiently.