Top Smartphone Battery Cases of 2025

The best portable chargers are an excellent solution for extending the battery life of your smartphone or other devices. However, these power banks can often be cumbersome. A battery case offers a sleek alternative, specifically designed for your phone, eliminating the hassle of managing cables that come with traditional portable chargers.

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 AmazonBattery cases not only extend your phone's battery life but also offer additional 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 and quick charging enhance the convenience of battery cases. However, some models may make your phone too bulky or fail to deliver a reliable charge. We've selected five top battery cases for leading smartphones to help you find the perfect fit.

In the market for a new phone? Check out our current recommendations for the best phones to buy right now, plus our best-reviewed Android phones, iPhones, and phones purpose-built for gaming.

Battery cases not your thing? We've also got hand-picked guides for other useful phone accessories like wireless and portable chargers, and screen protectors to save your iPhone 16 Pro from taking any fall damage.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Experience enhanced protection, extended battery life, and a compact design with this battery case designed for the iPhone 16 Pro. See it at AmazonProduct SpecificationsCapacity2,800 mAhSize6.5" x 2.9" x 0.71" Weight3.5 ouncesPROSCompact and lightweightIncludes integrated passive magnet for accessoriesCONSLimited battery sizeThe iPhone 16 Pro’s 3,582mAh battery is generally sufficient for a day's 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 extends your phone's life with an additional 2,800mAh battery. It easily connects to your phone via the USB-C port, and an indicator light keeps you informed about the battery levels. The case also features a stand-by mode to prevent overcharging.

While the Juice Pack doesn’t offer the largest battery capacity, its 50% boost to the iPhone 16 Pro’s battery life 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. This makes it one of the best iPhone accessories available.

In addition to extended battery life, the case provides robust protection, rated for falls up to 6ft, reducing the anxiety of accidental drops. Raised edges further protect the screen and camera from scratches and cracks. Mophie includes an integrated passive magnet for attaching various accessories, though it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Keep your iPhone 15 Pro Max safe and charged with this rugged case featuring two 5,000 mAh batteries and military-grade protection.See it at AmazonProduct SpecificationsCapacity10,000 mAh (2 x 5,000 mAh)Size6.74" x 3.48" x 0.99"Weight8.5 ouncesPROSMilitary-grade protection and shockproofingSupports 18W fast chargingCONSNo data passthrough Despite the iPhone 16 Pro Max’s substantial 4,685mAh battery, you may still need extra power for intensive tasks like Cinematic Mode or gaming on Apple Arcade. ZeroLemon’s battery case provides peace of mind with its dual 5,000mAh batteries, offering up to 1.5 extra charges. LED indicator lights keep you updated on the charging status and battery levels.

ZeroLemon’s case is designed with military-grade protection and shockproofing to safeguard your phone from damage. Although the added 10,000mAh capacity makes the case bulkier, it's ideal for users with larger hands. The case supports 18W fast charging, allowing a full charge in about two hours. However, it does not support data passthrough or wired headsets when connected via USB-C.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Power up your iPhone SE with this sleek, lightweight protective case that includes a 2,525mAh battery and supports Qi charging.See it at AmazonProduct SpecificationsCapacity2,525mAhSize2.81" x 4.14 x 0.66"Weight3.51 ouncesPROSSlim, lightweight designSupports Qi wireless chargingCONSOnly provides enough battery for one full phone chargeThe iPhone SE (2022) is a powerful budget smartphone with impressive performance on the latest iOS. However, its 2,018mAh battery may not last a full day under heavy use. The Mophie Juice Pack Wireless offers a full charge, keeping you away from power outlets for longer.

This case not only extends your phone's daily use but also enhances its longevity with a slim, protective shell that adds minimal bulk. It includes short-circuit, over-charge, and temperature protection for added safety. When it's time to recharge, you can use a wireless charger for both the case and your 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

0With an 8,000 mAh battery, compact design, and wireless charging, the NEWDERY Battery Case for the Samsung Galaxy S25 offers a lot. See it at AmazonProduct SpecificationsCapacity8,000 mAhSizeNot listedWeight2.82 ouncesPROSDisplay shows charging percentagesSupports wireless chargingCONSDifficult to remove phone from caseThe Samsung Galaxy S25 features a high-capacity 4,000mAh battery, but heavy usage can quickly deplete it. The Newdery Battery Case provides an additional 8,000mAh, nearly two full charges, ensuring you stay powered up during demanding activities like photography or gaming without adding excessive bulk.

The case slides onto your Galaxy S25 and connects via the USB-C port to deliver power. It maintains NFC and data transfer capabilities through the USB-C port even with the case attached. You can recharge the case and phone wirelessly, or use the USB-C for faster charging. Beyond charging, the TPU and PC materials provide robust 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

1Choose this universal battery that attaches to your phone, enabling wireless charging and including a handy stand. See it at AmazonProduct SpecificationsCapacity5,000 mAhSize2.7" x 4.09" x 0.56" Weight4.4 ouncesPROSUniversal design that uses Qi wireless chargingIncludes a standCONSSlightly confusing to attach the adapterBattery cases are great, but they can become obsolete with phone upgrades. The Mophie Juice Pack Connect offers a versatile solution that works with your current and future phones. Rather than a traditional case, it's a battery pack that attaches to your phone.

To use the Juice Pack Connect, attach a small anchor to your phone or case and then connect the 5,000mAh battery pack as needed. It uses Qi wireless charging, compatible with a wide range of smartphones, and can be recharged wirelessly. Additionally, it comes with a stand for convenient viewing.

How to Choose the Best Battery Case

Choosing the right battery case involves more than just selecting the largest capacity. A case that's too big might not fit in your pocket. The ideal battery case strikes a balance between capacity, size, and price.

If you only need a charger occasionally, consider a portable charger instead of a battery case. A 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. If you plan to keep the case on your phone constantly, these features are essential, especially for simultaneous wireless charging of your 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 supply power directly to your phone, and once the case's battery is depleted, the phone uses its own battery. Smartphones have built-in safeguards to prevent overcharging. The main risk 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 damage the battery and reduce its capacity over time.