Extend your smartphone's battery life effortlessly with a high-quality portable charger. While many portable chargers can be bulky, a sleek battery case offers a streamlined alternative, eliminating the need for extra cables. Battery cases provide a seamless charging solution tailored to your phone's design.

TL;DR – The Best Smartphone Battery Cases:

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Mophie Juice Pack Battery Case

ZEROLEMON Battery Case

Mophie Juice Pack Wireless

NEWDERY Battery Case

Mophie Juice Pack Connect

The ideal battery case not only extends your phone's battery life but also offers robust protection without compromising functionality, such as NFC or port access. Features like wireless and quick charging enhance convenience. However, some cases add excessive bulk or provide unreliable charging. Below, we've curated five top-rated battery cases for popular smartphones.

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

Mophie Juice Pack Battery Case

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 full day with moderate use. However, intensive tasks like photography, video streaming, or gaming deplete the battery faster. The Mophie Juice Pack adds a significant boost with its 2,800mAh battery, extending usage time considerably. Its compact design adds minimal bulk, remaining surprisingly slim and easily pocketable. It also offers drop protection up to 6 feet and raised edges to safeguard the screen and camera.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

ZEROLEMON Battery Case

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 with the iPhone 16 Pro Max's large 4,685mAh battery, demanding apps can drain it quickly. ZeroLemon's case provides ample power with its dual 5,000mAh batteries, offering approximately 1.5 extra charges. Its rugged design provides military-grade protection. While bulkier than other options, it offers superior protection and extended battery life. 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

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: Only provides enough battery for one full phone charge.

The iPhone SE (2022)'s 2,018mAh battery may struggle with heavy usage. The Mophie Juice Pack Wireless provides a full charge, extending its battery life significantly. Its slim profile adds minimal bulk, while offering protection against damage. It supports Qi wireless charging and features passthrough technology for wired accessories.

4. NEWDERY Battery Case

Best Samsung Galaxy S25 Case

NEWDERY Battery Case

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 4,000mAh battery, while impressive, can be depleted by demanding apps. The Newdery Battery Case adds nearly two full charges with its 8,000mAh capacity. It supports wireless charging and maintains NFC and data transfer functionality through the USB-C port. The case provides robust protection thanks to its TPU and PC materials.

5. Mophie Juice Pack Connect

Best Battery Case for Any Phone

Mophie Juice Pack Connect

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, working with various phones. It attaches to your phone or case and provides 5,000mAh of power via Qi wireless charging. The included stand adds extra convenience.

How to Choose the Best Battery Case

Choosing a battery case involves balancing capacity, size, and price. Consider whether you need a case for everyday use or just occasional trips. If you only need extra power occasionally, a portable charger might be a better option. Prioritize a case that fits comfortably in your pocket or bag without adding excessive weight or bulk. Also consider features like quick charging and Qi wireless charging for maximum convenience.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, when used correctly, battery cases won't damage your phone's battery. Your phone monitors charging to prevent overcharging. Proper ventilation is crucial 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 capacity.