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 streamlined solution, eliminating cable clutter and providing tailored protection for your device. They seamlessly integrate with your phone, offering additional power without sacrificing style or functionality.

This guide highlights five top-rated battery cases, balancing extended battery life with protection and minimal added bulk. We've considered factors like wireless charging, fast charging, and compatibility with essential phone features.

Need a new phone? Explore our recommendations for the best phones currently available, including top Androids, iPhones, and gaming-focused devices. Not interested in battery cases? Check out our guides on wireless chargers, portable chargers, and screen protectors for optimal phone protection.

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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A great battery case extends your phone's life, protects it from damage, and doesn't interfere with features like NFC or ports. Wireless and quick charging capabilities add extra convenience. However, some cases add excessive bulk or offer unreliable charging. This curated selection offers five excellent choices for popular smartphones.

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.

This case provides a substantial boost to the iPhone 16 Pro's battery life, while remaining surprisingly compact and lightweight. It offers drop protection up to 6 feet and includes a passive magnet for accessory attachment. Note that it doesn't support wireless charging.

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.

Offering robust protection and an impressive 10,000mAh battery, this case significantly extends the iPhone 16 Pro Max's battery life. Its rugged design provides excellent drop protection, but its larger size and weight should be considered.

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 only enough battery for approximately one full phone charge.

This slim and lightweight case provides a convenient charge boost for the iPhone SE (2022), while also offering Qi wireless charging and passthrough charging capabilities.

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.

This case offers a significant battery extension for the Samsung Galaxy S25, along with wireless charging and a convenient charging percentage display. However, removing the phone from the case may prove challenging for some users.

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 using Qi wireless charging; includes a stand.

Cons: Slightly confusing adapter attachment.

The Mophie Juice Pack Connect offers a versatile solution compatible with various smartphones via Qi wireless charging. Its included stand provides added convenience.

How to Choose the Best Battery Case

Selecting the right battery case involves balancing capacity, size, and features. Consider your needs: a high-capacity case might be too bulky for daily carry, while a smaller case may not provide sufficient extra power. Look for cases that support fast charging and Qi wireless charging for added convenience.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, when used correctly, battery cases pose no threat to your phone's battery. Your phone manages charging, preventing overcharging. Ensure the case offers adequate ventilation to prevent overheating.

Should you drain your battery case before charging?

No, fully draining lithium-ion batteries can damage them. Charge your battery case regularly to maintain its optimal performance and lifespan.