Based on this product's specifications, here are some alternatives and similar models
Battery 2-Power 11.1V 3-cell 27Wh (2500mAh, 0.152kg) replaces MN791
Summary description:
3‑cell laptop battery from 2-Power with nominal voltage 11.1 V and energy 27 Wh (capacity 2500 mAh). Designed as a replacement for MN791 compatible laptop models. Lightweight (0.152 kg) lithium battery intended for portable device power, suitable for extending runtime and replacing worn OEM batteries.