Based on this product's specifications, here are some alternatives and similar models
Battery for Nokia 6111 / N76 / 7500 — BL-4B Li-Ion 700 mAh
Summary description:
Rechargeable Li-Ion replacement battery BL-4B compatible with Nokia 6111, N76 and 7500 models. Rated capacity 700 mAh, designed to restore original runtime for calls, standby and basic phone functions. Suitable for replacing worn or degraded batteries to extend device use. Compact form factor for direct swap with OEM battery.