The Best Battery Cases for Smartphones in 2025

The best portable chargers are an excellent way to extend the battery life of your smartphone or other devices. However, many of these can be bulky and cumbersome. A battery case offers a sleeker alternative, tailored specifically to your phone, and eliminates 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 essential for adding extra power to your phone while also providing protection against damage. It's crucial to choose a case that doesn't interfere with your phone's features, such as NFC or ports, and doesn't add excessive bulk. Features like wireless charging and quick charging enhance the convenience of battery cases. However, some models can be overly bulky or fail to deliver a reliable charge. To help you find the perfect fit, we've selected five top-rated battery cases for the leading smartphones on the market.

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

Battery cases not your thing? We've also curated guides for other essential phone accessories like wireless and portable chargers, and screen protectors to shield your iPhone 16 Pro from any potential damage.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Enhance your iPhone 16 Pro with a compact, protective battery case that delivers 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 generally sufficient for a day of moderate use. However, activities like photography, social media browsing, or gaming can quickly drain its power. The Mophie Juice Pack Battery Case adds an extra 2,800mAh to keep your phone running longer. This case easily attaches to your phone and connects via the USB-C port. An indicator light informs you of the battery levels, and a stand-by mode prevents overcharging.

While the Juice Pack may not offer as much extra battery life as some other options, its 50% boost to the iPhone 16 Pro is significant. The case remains surprisingly compact, adding minimal bulk and weighing only about 3.5oz, making it easy to handle and slip into a pocket or bag. It's one of the best iPhone accessories available.

This case also provides robust protection for your iPhone, withstanding falls up to 6ft. Raised edges safeguard the screen and camera from scratches and cracks. Although it includes an integrated passive magnet for attaching to various accessories, it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Safeguard and power your iPhone 15 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 and shockproofing
• Supports 18W fast charging

CONS

• No data passthrough

Even with the iPhone 16 Pro Max's impressive 4,685mAh battery, extended use, particularly in Cinematic Mode or gaming via Apple Arcade, can deplete it rapidly. The ZeroLemon Battery Case provides peace of mind with its two 5,000mAh batteries, offering approximately 1.5 additional charges. LED indicators keep you informed about the charging status and battery levels.

ZeroLemon's case is built to last, featuring military-grade protection and shockproofing to shield your phone from damage. While the added 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, fully charging your phone in about two hours. Unfortunately, it does not support data passthrough or wired headsets when attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Charge up your iPhone SE with this slim, lightweight protective case that houses 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, known for its performance on the latest iOS at a competitive price. However, its 2,018mAh battery may struggle to last a full day with intensive use. The Mophie Juice Pack Wireless offers a complete charge, keeping you away from power outlets longer.

Beyond extending battery life, this Mophie case adds durability with a slim, protective shell that doesn't significantly increase bulk. It includes short-circuit, over-charge, and temperature protection to keep your device safe. When you need to recharge, simply place it on a wireless charger to power both the case and phone. 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

0Equip your Samsung Galaxy S25 with this compact case featuring an 8,000 mAh battery 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 boasts a high-capacity 4,000mAh battery, yet heavy use can drain it quickly. The Newdery Battery Case adds an extra 8,000mAh, nearly doubling your battery life, ensuring uninterrupted use of demanding features like cameras or gaming without adding excessive bulk.

The case easily attaches to your Galaxy S25 and connects via the USB-C port, allowing NFC and data transfer. Wireless charging is supported, while fast charging via USB-C ensures quick recharges. The TPU and PC materials used in the case offer substantial 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

1Opt for this universal battery that attaches to your phone, supports Qi wireless charging, and 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 often become obsolete when you upgrade your phone. The Mophie Juice Pack Connect is a versatile solution that can work with your current phone and likely your next one. 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 wide range of smartphones and allowing for wireless recharging. It also comes with a stand for convenient viewing.

How to Choose the Best Battery Case

Selecting the right battery case for your phone isn't just about choosing the one with the highest capacity. Opting for the largest battery might result in a case too bulky for your pocket. The ideal choice involves balancing battery capacity, size, and price.

If you're looking for something to toss in your bag, consider a portable charger instead. There's no need for a case specifically molded to your phone if you won't use it as such. The right battery case should fit comfortably in your pocket or bag without adding too much weight or bulk, while also offering protection for your phone.

Another consideration is that high-capacity battery cases often sacrifice features like quick charging and Qi charging capabilities. These features are essential if you plan to keep the case on your phone at all times, especially for the convenience of simultaneous wireless charging for both your phone and the battery case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone when used correctly. Your phone draws power directly from the case, and once the case is depleted, it switches to the phone's battery. Smartphones are equipped with technology to monitor battery health and prevent overcharging. The primary concern is overheating, which can be mitigated by ensuring the case has proper ventilation.

Should you drain your battery case before charging?

No, it's not necessary to fully drain lithium-based batteries in battery cases. In fact, allowing the battery to completely discharge can damage it and reduce its capacity over time.