Based on this product's specifications, here are some alternatives and similar models
Portable Battery Ansmann PB4100 40000 mAh
Summary description:
The Ansmann PB4100 is a powerful portable battery with a capacity of 40000 mAh, utilizing Lithium Polymer technology. It features 2 USB Type-A and 2 USB Type-C output ports, delivering a total output power of 100 W and an output current of 5 A. Its sleek silver design makes it a stylish and practical choice for charging devices on the go.