Based on this product's specifications, here are some alternatives and similar models
Battery Balancer for 48V Batteries BALANSER AKU PROTECT VOLT POLSKA 48V (No name)
Summary description:
Battery balancer designed for 48V battery systems, BALANSER AKU PROTECT VOLT POLSKA 48V. Ensures cell voltage equalization across a 48V pack to improve stability and longevity. Suitable for balancing series-connected cells or battery modules in electric vehicles, energy storage, or industrial power systems. Compact unit for installation into existing 48V battery assemblies.