Based on this product's specifications, here are some alternatives and similar models
Lead acid battery AVACOM RBC124 — 5.4 kg, lead acid, black
Summary description:
AVACOM RBC124 is a lead acid battery designed for reliable power supply in UPS and other backup applications. It weighs 5.4 kg and has a compact profile (width 205 mm, height 75 mm). Constructed for durability and consistent performance, the black battery offers robust build quality and long service life for stationary power systems and replacements.