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 more streamlined solution, eliminating cable clutter. These cases seamlessly integrate with your phone, providing extra power and protection in a compact design.

TL;DR – Top Smartphone Battery Cases:

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The ideal battery case boosts your phone's battery life, offers impact protection, and doesn't hinder functionality like NFC or port access. Wireless and fast charging are significant pluses. However, some cases add excessive bulk or fail to deliver reliable charging. We've curated five top-rated battery cases for popular smartphones.

Considering a new phone? Explore our recommendations for the best phones, including top Androids, iPhones, and gaming phones.

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

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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, but demanding tasks drain it quickly. The Mophie Juice Pack adds a substantial boost with its 2,800mAh battery. It's surprisingly compact and lightweight, easily fitting in a pocket. It also offers drop protection up to 6 feet and raised edges for screen and camera protection. Note: it lacks wireless charging.

2. ZeroLemon Battery Case

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### 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 challenged by intensive use. ZeroLemon's case provides a massive 10,000mAh capacity (two 5,000mAh batteries), offering approximately 1.5 extra charges. It's built for durability with military-grade protection. While bulkier, it offers 18W fast charging via USB-C (no data passthrough or wired headset support).

3. Mophie Juice Pack Wireless

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### Best iPhone SE Battery Case

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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) has a smaller battery that might struggle with heavy use. The Mophie Juice Pack Wireless provides a full extra charge in a slim, protective design. It supports Qi wireless charging and features passthrough technology for wired connections.

4. NEWDERY Battery Case

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### 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 decent, can be strained by demanding apps. The Newdery Battery Case adds a significant 8,000mAh, providing almost two full charges. It supports wireless charging and retains NFC and data transfer capabilities through the USB-C port. Also available for S25 Plus and Ultra models.

5. Mophie Juice Pack Connect

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### 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 is a universal solution, working with various phones via a small anchor point. Its 5,000mAh battery uses Qi wireless charging and includes a built-in stand.

How to Choose the Best Battery Case

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Selecting a battery case involves balancing capacity, size, and features. Consider whether you need a case for daily use or just occasional extra power. High-capacity cases often sacrifice features like fast or wireless charging. Prioritize a case that fits comfortably in your pocket or bag while providing adequate protection.

Battery Case FAQ

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### Are battery cases safe for your phone?

Yes, when used correctly, battery cases shouldn't harm your phone's battery. Smartphones monitor charging to prevent overcharging. Proper ventilation is crucial to avoid overheating.

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

No, fully draining lithium-ion batteries can damage them, reducing their lifespan. Charge your battery case whenever needed.