Based on this product's specifications, here are some alternatives and similar models
Rechargeable NiMH Battery Panasonic HHR20SCP/PP-LF 1.2V 2000mAh - Sub-C
Summary description:
Rechargeable Panasonic NiMH battery HHR20SCP/PP-LF with nominal voltage 1.2V and capacity 2000mAh in Sub-C size. Designed for repeated charging and suitable for power tools, remote-controlled models, hobby electronics and other devices requiring Sub-C cells. Provides stable voltage, reliable discharge and compatibility with standard NiMH chargers.