Based on this product's specifications, here are some alternatives and similar models
Battery for automatic feeders and trail cameras COSI CSB-64.5 HUNT 6V 4.5Ah
Summary description:
Sealed lead-acid battery COSI CSB-64.5 HUNT, 6V 4.5Ah, designed for use with automatic feeders and forest/trail cameras. Provides stable low-voltage power for long standby times and reliable operation in outdoor equipment. Maintenance-free construction minimizes service; suitable for seasonal or continuous deployment where compact, rechargeable power is required.