Based on this product's specifications, here are some alternatives and similar models
Laptop battery Green Cell SA02 for Samsung (11.1 V, 6600 mAh, Li-Ion, 9 cells) Black
Summary description:
Rechargeable laptop battery Green Cell SA02 is compatible with selected Samsung models and replaces AA-PB9NC6B/AA-PB9NS6B. It is a 11.1 V Li‑Ion pack with 6600 mAh capacity and 9 cells, delivered in a box. Suitable for extending runtime, replacing worn originals and ensuring stable power for everyday mobile use.