Top Smartphone Battery Cases of 2025

The best portable chargers are an essential way to extend the battery life of your smartphone or other devices. However, many of these chargers can be quite bulky. A battery case offers a sleek, tailored solution for your phone, eliminating the need for cable management that often accompanies traditional power banks.

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

Battery cases are designed not only to provide additional power to your phone but also to offer protection against damage. You'll want a case that doesn't interfere with your phone's features, such as NFC or ports, and doesn't add unnecessary bulk. Features like wireless charging and quick charging can enhance the convenience of battery cases. However, some cases can make your phone overly bulky or fail to deliver a reliable charge. To help you find the perfect case, we've curated a list of five top battery cases for leading smartphones.

**In the market for a new phone?** Explore our current recommendations for the best phones to buy right now, including our top-rated Android phones, iPhones, and phones designed specifically for gaming.

**Battery cases not your thing?** We've also compiled hand-picked guides for other useful phone accessories, such as wireless and portable chargers, and screen protectors to safeguard your iPhone 16 Pro from any accidental drops.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Enhance your iPhone 16 Pro with a blend of protection, additional power, and a compact design. This battery case is a must-have for extending your phone's battery life while ensuring it remains easy to handle. 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 and lightweight
• Includes an integrated passive magnet for accessories

Cons:

• Limited battery size

The iPhone 16 Pro's 3,582mAh battery is designed to last through a day of moderate use, but intensive activities like photography, social media browsing, or gaming can drain it quickly. The Mophie Juice Pack Battery Case for iPhone 16 Pro adds an additional 2,800mAh, ensuring your phone lasts longer. The case easily attaches to your phone and connects to the USB-C port, with an indicator light to show battery levels and a stand-by mode to prevent overcharging.

Although the Juice Pack offers less battery life compared to other options, the 50% boost it provides to the iPhone 16 Pro is significant. It remains compact, adding minimal bulk and weighing just 3.5oz, making it one of the best iPhone accessories available. It's designed to be easy to handle and slips effortlessly into a pocket or bag.

This case not only extends battery life but also offers robust protection, rated for falls up to 6ft. Raised edges protect the screen and camera from scratches and cracks. While it includes an integrated passive magnet for accessories, it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Ensure your iPhone 15 Pro Max remains safe and powered 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 and shockproofing
• Supports 18W fast charging

Cons:

• No data passthrough

Despite the iPhone 16 Pro Max's impressive 4,685mAh battery, heavy usage like Cinematic Mode or gaming on Apple Arcade can drain it quickly. ZeroLemon's battery case offers peace of mind with its two 5,000mAh batteries, providing about 1.5 additional charges. LED indicator lights keep you informed about the charging status and battery levels.

This case is built tough with military-grade protection and shockproofing, ensuring your phone stays safe. While the added 10,000mAh of power makes it bulkier, it's ideal for those with larger hands. When plugged into the case via USB-C, your phone charges quickly at 18W, reaching full charge in about two hours. Unfortunately, it does not support data transfer or wired headsets through the USB-C port when the case is attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Extend your iPhone SE's battery life with this slim, lightweight protective case that includes a 2,525mAh battery and supports Qi charging. See it at Amazon

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) is a powerful budget smartphone with impressive performance for its price. However, its 2,018mAh battery may struggle to last a full day of intensive use. The Mophie Juice Pack Wireless solves this by providing a full charge, keeping you away from power outlets longer.

Beyond extending battery life, this case offers a slim, protective shell without adding too much bulk. It includes short-circuit, over-charge, and temperature protection to keep your device safe. You can recharge the case wirelessly using a Qi charger, and passthrough technology allows you to connect a lightning cable or headphones without removing the case.

4. Newdery Battery Case

Best Samsung Galaxy S25 Case

### NEWDERY Battery Case

0Boost your Samsung Galaxy S25 with an 8,000 mAh battery, a compact design, and wireless charging capabilities. See it at Amazon

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 features a robust 4,000mAh battery, yet intensive daily use can drain it faster than expected. The Newdery Battery Case adds an extra 8,000mAh, nearly two full charges, ensuring you never run out of power when using demanding features like cameras or gaming, without adding too much bulk.

The case slides onto your Galaxy S25 and connects to the USB-C port to deliver power. Even with the case attached, the USB-C port supports NFC and data transfer. You can charge the case and phone wirelessly, but for faster charging, use the USB-C port. The TPU and PC materials in the case provide additional protection against damage.

This case is also available for the Galaxy S25 Plus and Galaxy S25 Ultra models.

5. Mophie Juice Pack Connect

Best Battery Case for Any Phone

### Mophie Juice Pack Connect

1Enjoy the flexibility of this universal battery that attaches to your phone, wirelessly charges it, and even includes a handy 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 that uses Qi wireless charging
• Includes a stand

Cons:

• Slightly confusing to attach the adapter

Battery cases are great, but they can become obsolete when you upgrade your phone. The Mophie Juice Pack Connect offers a versatile solution that works with your current phone and likely your next one. It's not a traditional case but rather a battery that attaches to your phone.

With the Juice Pack Connect, you attach a small anchor point to your phone or phone case, allowing you to slip on the 5,000mAh battery pack as needed. It uses Qi wireless charging, compatible with various smartphones, and can recharge wirelessly. It also comes with a stand for viewing content or working on documents.

How to Choose the Best Battery Case

Selecting the right battery case isn't just about finding the highest capacity; that can lead to a bulky solution that's hard to carry. The key is to find a balance between battery capacity, size, and price.

If you only need a battery case occasionally, consider a portable charger instead. There's no point in buying a molded case if you won't use it regularly, as that space could be used for more energy cells. A good battery case should fit comfortably in your pocket or bag without adding too much weight or bulk, while also providing protection for your phone.

High-capacity battery cases often sacrifice features like quick charging and Qi charging for more energy storage. These features are crucial if you plan to keep the case on your phone at all times, especially for the convenience of simultaneous wireless charging.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone's battery when used correctly. Your phone draws power directly from the case, and once the case is drained, it switches to the phone's battery. Smartphones are equipped with safeguards to prevent overcharging. The only potential issue is overheating if the case lacks proper ventilation.

Should you drain your battery case before charging?

No, it's not necessary to fully drain lithium-based batteries in battery cases. Doing so can even damage the battery, reducing its capacity over time.