The Best Battery Cases for Smartphones in 2025

Extend your smartphone's battery life effortlessly with a sleek and convenient battery case. Unlike bulky portable chargers, battery cases offer a tailored solution, eliminating cable clutter. They provide extra power while offering protection for your device.

TL;DR – The Best 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 integrates extra power and impact protection without compromising phone functionality, such as NFC or port access, or adding excessive bulk. Wireless and fast charging capabilities further enhance convenience. However, some cases fall short, adding unnecessary bulk or failing to deliver reliable charging. We've curated five top-performing battery cases for leading smartphones.

Considering a new phone? Explore our recommendations for the best phones, including top-rated 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

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### Best iPhone 16 Pro Battery Case

### Mophie Juice Pack 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 typically lasts a day with moderate use, but demanding tasks quickly drain it. The Mophie Juice Pack adds a substantial boost, extending usage significantly. Its compact design and lightweight feel (around 3.5oz) make it surprisingly unobtrusive. It offers drop protection up to 6ft and raised edges to protect the screen and camera. Note that it lacks wireless charging.

2. ZeroLemon Battery Case

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### Best iPhone 16 Pro Max Battery Case

### ZEROLEMON 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 intensive use. ZeroLemon's case provides a massive power boost with its dual 5,000mAh batteries, offering approximately 1.5 extra charges. Its robust build offers military-grade protection. While bulkier, its 18W fast charging compensates. Note the lack of data passthrough or wired headset support.

3. Mophie Juice Pack Wireless

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### Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

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Product Specifications
Capacity: 2,525mAh
Size: 2.81" x 4.14 x 0.66"
Weight: 3.51 ounces

PROS: Slim, lightweight design; Supports Qi wireless charging.
CONS: Only provides enough battery for one full phone charge.

The iPhone SE (2022)'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 capabilities are key features. It also includes short-circuit, overcharge, and temperature protection.

4. NEWDERY Battery Case

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### Best Samsung Galaxy S25 Case

### NEWDERY Battery 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 decent, can be drained by demanding apps. The NEWDERY case offers nearly two full charges with its 8,000mAh capacity. It supports wireless charging and maintains NFC and data transfer capabilities through the USB-C port. It also provides impact protection.

5. Mophie Juice Pack Connect

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### Best Battery Case for Any Phone

### Mophie Juice Pack Connect

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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 to attach the adapter.

The Mophie Juice Pack Connect offers a universal solution, compatible with various phones via a small attachable anchor. Its 5,000mAh battery uses Qi wireless charging and includes a convenient stand.

How to Choose the Best Battery Case

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Selecting a battery case involves balancing capacity, size, and price. Consider your needs: if you only need occasional extra power, a portable charger might suffice. Prioritize a case that fits comfortably in your pocket or bag while offering sufficient protection. High-capacity cases often lack fast or wireless charging, so consider your priorities.

Battery Case FAQ

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### Are battery cases safe for your phone?

Yes, when used correctly. Smartphones monitor charging, preventing overcharging. Proper ventilation is key to prevent overheating.

### Should you drain your battery case before charging?

No, fully draining lithium-ion batteries can damage them, reducing their lifespan.