Based on this product's specifications, here are some alternatives and similar models
Cordless tool battery Bosch PTBO18V4 — 18 V Lithium‑Ion, 4 Ah, 590 g
Summary description:
Bosch PTBO18V4 is a cordless tool battery with 18 V voltage and 4 Ah Lithium‑Ion capacity. Designed for compatible Bosch cordless tools, it offers portable power for drilling, driving and general workshop tasks. The battery weighs 590 g and provides reliable runtime and quick replacement to keep projects moving.