Extend your smartphone's battery life effortlessly with a high-quality portable charger. While traditional power banks can be bulky, a sleek battery case offers a streamlined solution, eliminating cable clutter. Battery cases provide extra power while offering protection for your phone, ensuring you stay connected longer without sacrificing convenience.
TL;DR – Top Smartphone Battery Cases:
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Mophie Juice Pack Battery Case
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ZEROLEMON Battery Case
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Mophie Juice Pack Wireless
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NEWDERY Battery Case
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Mophie Juice Pack Connect
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The ideal battery case seamlessly blends extended battery life with robust protection, without compromising phone functionality like NFC or ports, or adding excessive bulk. Wireless and quick charging capabilities further enhance convenience. However, some cases fall short, adding unnecessary bulk or failing to deliver reliable charging. Below, we highlight five top-performing battery cases for leading smartphones.
Considering a new phone? Explore our recommendations for the best phones, including top Androids, iPhones, and gaming-focused devices.
Battery cases not for you? Check out our guides on wireless chargers, portable chargers, and screen protectors.
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1. Mophie Juice Pack Battery Case
Best iPhone 16 Pro Battery Case

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Product Specifications
Capacity: 2,800 mAh
Size: 6.5" x 2.9" x 0.71"
Weight: 3.5 ounces
Pros: Compact and lightweight; Integrated passive magnet for accessories.
Cons: Limited battery size.
The iPhone 16 Pro's 3,582mAh battery generally lasts a day with moderate use. However, intensive tasks like photography or gaming deplete the battery faster. The Mophie Juice Pack adds a substantial boost, extending usage significantly. Its compact design and lightweight feel make it surprisingly unobtrusive. The case offers drop protection up to 6 feet and raised edges to prevent screen and camera scratches.
2. ZeroLemon Battery Case
Best iPhone 16 Pro Max Battery Case

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Product Specifications
Capacity: 10,000 mAh (2 x 5,000 mAh)
Size: 6.74" x 3.48" x 0.99"
Weight: 8.5 ounces
Pros: Military-grade protection and shockproofing; Supports 18W fast charging.
Cons: No data passthrough.
Even the iPhone 16 Pro Max's large battery can be strained by demanding apps. ZeroLemon's case provides an extra 1.5 charges with its dual 5,000mAh batteries. Its robust build offers military-grade protection, but adds considerable bulk. 18W fast charging ensures quick replenishment.
3. Mophie Juice Pack Wireless
Best iPhone SE Battery Case

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Product Specifications
Capacity: 2,525 mAh
Size: 2.81" x 4.14 x 0.66"
Weight: 3.51 ounces
Pros: Slim, lightweight design; Supports Qi wireless charging.
Cons: Provides one full phone charge.
The iPhone SE's battery may struggle with heavy use. The Mophie Juice Pack Wireless provides a full charge, extending usage significantly. Its slim profile and wireless charging compatibility enhance convenience.
4. Newdery Battery Case
Best Samsung Galaxy S25 Case

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Product Specifications
Capacity: 8,000 mAh
Size: Not listed
Weight: 2.82 ounces
Pros: Display shows charging percentages; Supports wireless charging.
Cons: Difficult to remove phone from case.
The Samsung Galaxy S25's battery, while impressive, can be drained quickly with intensive use. The Newdery Battery Case provides almost two full charges, extending usage substantially. It supports wireless and fast charging, and retains NFC and data transfer capabilities.
5. Mophie Juice Pack Connect
Best Universal Battery Case

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Product Specifications
Capacity: 5,000 mAh
Size: 2.7" x 4.09" x 0.56"
Weight: 4.4 ounces
Pros: Universal design; Uses Qi wireless charging; Includes a stand.
Cons: Slightly confusing adapter attachment.
The Mophie Juice Pack Connect offers a universal solution, compatible with various phones. Its 5,000mAh battery provides a significant boost and supports Qi wireless charging. The included stand adds extra convenience.
Choosing the Right Battery Case
Selecting a battery case involves balancing capacity, size, and price. Consider your needs – a case for everyday use requires a different approach than a backup for occasional use. High-capacity cases may sacrifice features like quick or wireless charging.
Battery Case FAQ
Are battery cases safe for your phone?
Yes, when used correctly. Smartphones monitor charging, preventing overcharging. Proper ventilation prevents overheating.
Should you drain your battery case before charging?
No, fully draining lithium-ion batteries can damage them.