Based on this product's specifications, here are some alternatives and similar models
Battery AVACOM RBC157 12V 7Ah for UPS
Summary description:
Sealed lead-acid replacement battery AVACOM RBC157 with 12V nominal voltage and 7Ah capacity, designed for use in compatible UPS units. Provides reliable backup power for short-term outages, safe maintenance-free operation, and straightforward plug-in replacement in systems that accept this size and terminal layout. Suitable for home or office UPS applications.