The Best Battery Cases for Smartphones in 2025

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. These cases seamlessly integrate with your phone, providing extra power and often added protection.

TL;DR – Top Smartphone Battery Cases:

Mophie Juice Pack Battery Case See it at Amazon

ZEROLEMON Battery Case See it at Amazon

Mophie Juice Pack Wireless See it at Amazon

NEWDERY Battery Case See it at Amazon

Mophie Juice Pack Connect See it at Amazon

The ideal battery case boosts your phone's power while offering impact protection, without hindering features like NFC or ports, or adding excessive bulk. Wireless and fast charging capabilities are significant pluses. However, some cases fall short, adding too much size or failing 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.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

This compact and lightweight case for the iPhone 16 Pro offers protection, extended battery life, and an integrated magnet for accessories. See it at Amazon

Product Specifications:

• Capacity: 2,800 mAh
• Size: 6.5" x 2.9" x 0.71"
• Weight: 3.5 ounces

Pros: Compact, lightweight, integrated magnet for accessories.

Cons: Limited battery size.

The iPhone 16 Pro's 3,582mAh battery may struggle with intensive use. The Mophie Juice Pack adds a significant boost, extending battery life considerably while remaining surprisingly compact and easy to handle. It also offers drop protection up to 6 feet. However, it lacks wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

Safeguard and power your iPhone 16 Pro Max with this rugged case featuring two 5,000 mAh batteries and military-grade protection. See it at Amazon

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, shockproofing, 18W fast charging.

Cons: No data passthrough.

Even the iPhone 16 Pro Max's large battery can benefit from this case's massive 10,000mAh capacity. Its robust build offers excellent protection, but its bulkier size is a trade-off for the extended battery life and durability. Note that data passthrough and wired headset use are not supported.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

Power up your iPhone SE with this slim, lightweight protective case featuring a 2,525mAh battery and Qi wireless charging. See it at Amazon

Product Specifications:

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

Pros: Slim, lightweight, Qi wireless charging.

Cons: Provides one full phone charge.

This case extends the iPhone SE's battery life while offering a slim profile and the convenience of wireless charging. It also includes protection features like short-circuit, over-charge, and temperature protection. Passthrough technology allows for wired connections.

4. NEWDERY Battery Case

Best Samsung Galaxy S25 Case

The NEWDERY Battery Case for the Samsung Galaxy S25 boasts an 8,000 mAh battery, compact design, and wireless charging. See it at Amazon

Product Specifications:

• Capacity: 8,000 mAh
• Size: Not listed
• Weight: 2.82 ounces

Pros: Charging percentage display, wireless charging.

Cons: Difficult phone removal.

This case provides nearly two full charges for the Galaxy S25, maintaining a relatively compact size. It supports wireless charging and maintains NFC and data transfer capabilities through the USB-C port. Fast charging via USB-C is also supported. Also available for Galaxy S25 Plus and Ultra models.

5. Mophie Juice Pack Connect

Best Universal Battery Case

This universal battery attaches to your phone, offers wireless charging, and includes a stand. See it at Amazon

Product Specifications:

• Capacity: 5,000 mAh
• Size: 2.7" x 4.09" x 0.56"
• Weight: 4.4 ounces

Pros: Universal design, Qi wireless charging, included stand.

Cons: Slightly confusing adapter attachment.

The Mophie Juice Pack Connect offers a versatile solution, compatible with various phones via a small anchor point. Its 5,000mAh battery charges wirelessly and includes a convenient stand. This is a good option if you want a solution that can be used with multiple phones.

Choosing the Right Battery Case

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 cases that fit comfortably in your pocket or bag without adding excessive bulk. Also, consider features like fast charging and Qi wireless charging for added convenience.

Battery Case FAQ

Are battery cases safe for your phone? Yes, when used correctly. Your phone manages charging, preventing overloads. Proper ventilation is crucial to prevent overheating.

Should you drain your battery case before charging? No. Fully draining lithium-ion batteries can damage them, reducing their capacity over time.