Based on this product's specifications, here are some alternatives and similar models
Battery VRLA AGM EMU EV 9-12 T2 — 12 V, 9 Ah, maintenance-free, black
Summary description:
The EMU EV 9-12 T2 is a 12 V, 9 Ah VRLA AGM battery designed as a maintenance-free power source for electric vehicles and other equipment. It provides stable output, long service life and safe sealed operation in a compact black housing. Supplied as a single unit, it suits backup, mobility and portable power applications where reliable, ready-to-use energy is required.