The Best Battery Cases for Smartphones in 2025

Extend your smartphone's battery life effortlessly with a high-quality portable charger. While many portable chargers can be bulky, a smartphone battery case offers a sleek, integrated solution, eliminating the need for extra cables. Battery cases provide added power and protection, all in one convenient package.

TL;DR – The Best Smartphone Battery Cases:

### Mophie Juice Pack Battery Case

0See it at Amazon### ZEROLEMON Battery Case

0See it at Amazon### Mophie Juice Pack Wireless

0See it at Amazon### NEWDERY Battery Case

0See it at Amazon### Mophie Juice Pack Connect

1See it at Amazon

The ideal battery case seamlessly integrates extra power and impact protection without compromising phone functionality, such as NFC or port access. Wireless and fast charging capabilities are significant advantages. However, some cases add excessive bulk or offer unreliable charging. We've curated five top-rated battery cases for popular smartphones.

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

Battery cases not your style? Check out our guides on wireless chargers, portable chargers, and screen protectors.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0See it at Amazon

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 may struggle with intensive use. The Mophie Juice Pack adds a substantial boost with its 2,800mAh battery, extending usage significantly. It's surprisingly compact and lightweight, easily fitting in pockets. It also offers drop protection up to 6 feet and includes a passive magnet for accessories. Note that it doesn't support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0See 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, supports 18W fast charging.

Cons: No data passthrough.

Even the iPhone 16 Pro Max's large battery can benefit from extra power, especially with demanding tasks. ZeroLemon's case provides approximately 1.5 extra charges with its dual 5,000mAh batteries. LED indicators display charging status. While offering robust protection, its bulkier design is best suited for users with larger hands. It supports 18W fast charging but lacks data passthrough and wired headset support.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0See 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 design, supports Qi wireless charging.

Cons: Provides approximately one full phone charge.

The iPhone SE (2022) benefits greatly from this case, providing a full charge and extending its battery life. Its slim design adds minimal bulk, and it includes short-circuit, overcharge, and temperature protection. Qi wireless charging is supported, and passthrough technology allows for simultaneous charging and headphone/cable use.

4. Newdery Battery Case

Best Samsung Galaxy S25 Case

### NEWDERY Battery Case

0See it at Amazon

Product Specifications:

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

Pros: Displays charging percentages, supports wireless charging.

Cons: Difficult to remove phone from case.

The Samsung Galaxy S25's 4,000mAh battery can be extended significantly with the Newdery case's 8,000mAh capacity (nearly two full charges). It maintains USB-C functionality, including NFC and data transfer, and supports wireless charging and fast charging via USB-C. The case offers good protection and is also available for the S25+ and S25 Ultra.

5. Mophie Juice Pack Connect

Best Battery Case for Any Phone

### Mophie Juice Pack Connect

1See 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, uses Qi wireless charging, includes a stand.

Cons: Slightly confusing adapter attachment.

The Mophie Juice Pack Connect is a versatile solution, working with various phones and offering a 5,000mAh battery. It uses Qi wireless charging and includes a built-in stand. The modular design allows for use with different phones.

How to Choose the Best Battery Case

Selecting a battery case involves balancing capacity, size, and price. Consider whether you need a case for daily use or occasional use. If it's the latter, a portable charger might suffice. Prioritize a case that fits comfortably in your pocket or bag while offering adequate protection. High-capacity cases may lack features like fast or wireless charging. Consider these factors to find the perfect fit.

Battery Case FAQ

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. Ensure the case provides adequate ventilation to prevent 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.