Based on this product's specifications, here are some alternatives and similar models
Portable Battery PGYTECH P-PG-039 3000mAh
Summary description:
The PGYTECH P-PG-039 portable battery offers a 3000mAh capacity, making it a reliable power source for your devices. Made from durable materials like ABS, aluminum, and polycarbonate, it features a compact design with dimensions of 70mm width, 39.5mm depth, and 100mm height. This universal accessory is perfect for on-the-go charging, ensuring your smartphone stays powered up wherever you are.