Top Smartphone Battery Cases of 2025

The best portable chargers are a great way to extend the battery life of your smartphone or other devices. However, many of these can be quite bulky. A battery case offers a more streamlined solution designed specifically for your phone, eliminating the need for cable management that often comes with 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 extend your phone's battery life but also to offer additional protection against damage. They should not interfere with your phone's features, such as NFC or ports, and ideally, they won't add excessive bulk. Features like wireless charging and quick charging can enhance the convenience of battery cases. However, not all battery cases are created equal; some can make your phone too bulky or fail to provide a reliable charge. To assist you in your search, we've curated a list of five top-rated battery cases for popular smartphones.

In the market for a new phone? Explore our latest recommendations for the best phones to buy now, including our top-rated Android phones, iPhones, and gaming-specific models.

Battery cases not your thing? We also offer carefully selected guides for other essential phone accessories, such as wireless and portable chargers, and screen protectors to shield your iPhone 16 Pro from fall damage.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Enhance your iPhone 16 Pro with this compact battery case that offers both protection and additional power. 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 integrated passive magnet for accessories

CONS

• Limited battery size

The iPhone 16 Pro's 3,582mAh battery is typically sufficient for a day's moderate use, but activities like photography, scrolling, or gaming can drain it quickly. The Mophie Juice Pack Battery Case for iPhone 16 Pro adds a 2,800mAh battery, extending your phone's lifespan significantly. It easily slots onto the phone and connects via the USB-C port. An indicator light shows battery levels, and stand-by mode prevents overcharging.

While the Juice Pack may not provide as much extra battery life as some other options, it offers a 50% boost to the iPhone 16 Pro, making a substantial difference while maintaining a surprisingly slim profile. Weighing only about 3.5oz, it adds minimal bulk, making it easy to handle and slip into a pocket or bag. This case is one of the best iPhone accessories available, offering excellent protection with a 6ft drop rating. Raised edges safeguard the screen and camera from scratches and cracks. Although it doesn't support wireless charging, Mophie includes an integrated passive magnet for attaching various accessories.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Keep your iPhone 16 Pro Max safe and charged with this rugged case, which includes 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 large 4,685mAh battery, extended use in features like Cinematic Mode or Apple Arcade gaming can deplete it quickly. The ZeroLemon Battery Case provides peace of mind with its two 5,000mAh batteries, adding approximately 1.5 extra charges. LED indicators show the charging status and battery levels.

ZeroLemon's case is built tough, with military-grade protection and shockproofing to keep your phone safe. While the 10,000mAh capacity makes it bulkier than other cases, it's ideal for those with larger hands. When connected via USB-C, it supports speedy 18W fast charging, bringing your phone from 0% to 100% in about two hours. Unfortunately, it doesn't support data passthrough or wired headsets via the USB-C port when attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Enhance 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) offers impressive performance at a budget-friendly price, but its 2,018mAh battery can struggle to last a full day with intensive use. The Mophie Juice Pack Wireless provides a full charge, keeping you away from power outlets longer.

This case not only extends your phone's daily usage but also enhances its lifespan with a slim, protective shell that doesn't add much bulk. It includes protections against short-circuiting, overcharging, and temperature fluctuations. For recharging, simply place it on a wireless charger, and your phone will charge simultaneously. 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

0With an 8,000 mAh battery, compact design, and wireless charging, the NEWDERY Battery Case for the Samsung Galaxy S25 offers substantial value. 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 boasts a 4,000mAh battery, but heavy usage can drain it faster than expected. The Newdery Battery Case offers an additional 8,000mAh, nearly two full charges, ensuring you stay powered up during intensive tasks like using cameras or gaming without adding excessive bulk.

The case easily slides onto your Galaxy S25 and connects via the USB-C port. Even with the case attached, the USB-C port supports NFC and data transfer. Wireless charging is available, but for faster charging, the USB-C port is your best bet. The case also provides protection using TPU and PC materials, safeguarding against potential 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

1Enhance any phone with this versatile battery that attaches wirelessly 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 can become obsolete when you upgrade your phone. The Mophie Juice Pack Connect offers a versatile solution that can work with your current phone and likely your next one too. This isn't a traditional case but rather a battery pack that attaches to your phone via a small anchor point. The 5,000mAh battery uses Qi wireless charging, supporting a variety of smartphones and allowing for wireless recharging. It also comes with a stand for viewing content or working.

How to Choose the Best Battery Case

Selecting the right battery case for your phone involves more than just choosing the one with the largest capacity. A case that's too big may not fit comfortably in your pocket. The key is finding the right balance between battery capacity, size, and price.

If you're only using the case occasionally, a portable charger might be more suitable. There's no need for a phone-specific case if you won't use it regularly, as this could limit the space available for additional power cells. Look for a battery case that fits well 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 keep the case on your phone constantly, especially for simultaneous wireless charging of both the phone and the case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone if used correctly. They provide power directly to your phone, and once the case's battery is depleted, the phone's battery takes over. Smartphones have built-in monitoring to prevent overcharging. The primary concern could be 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. Completely draining them can even damage the battery, reducing its capacity over time.