The most important reason is the conversion rate. For iPhone 11 Pro Max ,6800mAh,Rated capacity: 4000-4500mAh. For iPhone 12 Pro Max ,6800mAh,Rated capacity: 4000-4500mAh. For iPhone 12 Mini ,6800mAh,Rated capacity: 3500-4000mAh.
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Large hole back glass battery back cover For iPhone 12 12 Pro 12Pro Max shell for iPhone phone shell battery door cover 12mini
Aliexpress UK
eBay
Large hole back glass battery back cover For iPhone 12 12 Pro 12Pro Max shell for iPhone phone shell battery door cover 12mini
Aliexpress UK
The most important reason is the conversion rate. battery case is only designed for iPhone 12 Pro Max. It's NOT compatible with iPhone 12 mini/12 or 12 Pro. Fraternize 6000mAh Battery Case for iPhone 12 Pro Max.
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10000mah Slim Cover Battery Charger Case for IPhone 16 Pro Max 12 13 14 15 Pro Max 16 Plus Power Bank Magnetic Wireless
Aliexpress UK
At only 4.2 ounces, it's as light as a mini aplle. In the box, you'll get battery case for iPhone 12/12 Pro x 1,tempered film x 1，charging cable x 1,user manual x 1. Water resistance level Not Water Resistant.
eBay
Magsafe Wireless Charge Hello Kitty Casing For Iphone 16 Pro Max 15 14 12 13 11 Pro Max 14 15 16 7 8 Plus XR XS X Cellphone Case
Aliexpress UK
Electricity conversion rate: About 70~75%. Capacity: 4000mAh for iPhone 12 mini. For iPhone 13 12 Pro Battery Cover. For iPhone 12 13 Pro Max Battery Cases. 6000mAh for iPhone 12 Pro Max. For iPhone 12 13 Battery Cover.
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For iPhone 16 Pro Max 15 14 Plus 13 12 Pro Max Deluxe removable magnetic wallet flip cover Cell phone leather CC Style Case
Aliexpress UK
Whether it's the iPhone 6/6s/7/8, 6plus/6s plus/7plus/8plus, X/Xs, XR, 11 series, or 12 series, we've got you covered. 💼 Sleek and Compact Design Experience superior protection without the bulk. 💥 Robust Impact Protection Accidents happen, but with our power case, your iPhone stays safe.
eBay
Ultra Thin Silicone Case For iPhone 13 12 Mini 11 Pro Max Clear Soft Transparent Silicon Case For iPhone 12 13 11 Pro Max Fundas
Aliexpress UK
This product is designed as protective backup battery case, which can protect your cell phone well. Current input: 5V 1800mA.
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Flower Phone Case For iPhone 16 Pro Case iPhone 15 14 13 12 11 Pro Max 13 12 Mini Shockproof Soft Clear Cover Funda
Aliexpress UK
◆ The battery capacity LED light is displayed in four positions, and the indicator flashes during charging operation;. 【 Shell Material 】: Advanced PC+ABS material. ◆ Using sturdy and durable engineering materials to fully protect the phone, charging+protection in one;.
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Paintings Flower Phone Case For iPhone 16 Pro Max Case iPhone 15 13 11 12 14 Pro Max Plus 12 13 Shockproof Silicone Soft Cover
Aliexpress UK