For iPhone 13 Pro Max/13 Pro/13 Mini External Battery Case Power Bank Cover 7...
The most important reason is the conversion rate. For iPhone 13 Pro Max ,7000mAh,Rated capacity:4000-4500mAh. For iPhone 13 Mini.6000mAh,Rated capacity: 3500-4000mAh How to use For iPhone 13/13 Pro,7000mAh, Rated capacity:4000-4500mAh.