Based on this product's specifications, here are some alternatives and similar models
Charging base SUNMI M3/L3 4-slot for mobile POS devices
Summary description:
Charging base compatible with SUNMI M3 and L3 mobile POS devices, featuring four charging slots for simultaneous power delivery. Designed to organize and recharge multiple handheld terminals in retail, hospitality or field operations. Provides a compact docking solution to keep devices charged and ready for daily use, simplifying device management and reducing downtime.