If you're always on the go and need to keep your smartphone charged, the best portable chargers are a great solution. However, traditional power banks can be bulky and cumbersome. A battery case offers a sleek alternative, specifically designed for your phone, eliminating the hassle of managing cables. These cases not only extend your battery life but also provide additional protection against damage, all while maintaining a slim profile.

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 are essential for adding extra battery life to your phone while also offering protection. They should seamlessly integrate with your phone's features, such as NFC and ports, without adding excessive bulk. Features like wireless and quick charging can significantly enhance the convenience of battery cases. However, some options might increase your phone's size too much or fail to deliver a reliable charge. To guide your choice, we've selected five top battery cases for popular smartphones.

In the market for a new phone? Check out our current recommendations for the best phones to buy right now, including our top-reviewed Android phones, iPhones, and gaming-focused devices.

Battery cases not your thing? We've also curated guides for other phone accessories, such as wireless and portable chargers, and screen protectors designed to protect your iPhone 16 Pro from any potential falls.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Enhance your iPhone 16 Pro's protection and battery life with this sleek, compact case. 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 boasts a 3,582mAh battery, which typically lasts a day with moderate use. However, activities like photography, scrolling, or gaming can quickly drain its power. The Mophie Juice Pack Battery Case adds a 2,800mAh battery, significantly extending your phone's lifespan. The case easily attaches to your phone and connects to the USB-C port, with an indicator light to monitor battery levels and a standby mode to prevent overcharging.

Although the Juice Pack's battery capacity is less than some alternatives, it boosts the iPhone 16 Pro's battery by about 50%, yet remains compact, adding minimal bulk and weighing just 3.5oz. This makes it easy to handle and slip into a pocket or bag, positioning it as one of the best iPhone accessories.

The case also offers robust protection, rated for drops up to 6ft, and features raised edges to protect the screen and camera from scratches and cracks. While it includes a passive magnet for 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 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 With a robust 4,685mAh battery, the iPhone 16 Pro Max might seem like it doesn't need additional power. However, if you're heavily using features like Cinematic Mode or Apple Arcade, extra juice can be crucial. ZeroLemon's battery case provides peace of mind with its dual 5,000mAh batteries, offering about 1.5 extra charges, and LED indicators to show battery levels.

This case is built tough, with military-grade protection and shockproofing to shield your phone from damage. The added 10,000mAh capacity makes it bulkier, ideal for users with larger hands. When connected via USB-C, it supports speedy 18W fast charging, fully charging your phone in about two hours. Unfortunately, it doesn't support data transfer or wired headset use through the USB-C port when the case is 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 case featuring a 2,525mAh battery and Qi charging support. 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) offers impressive performance for a budget smartphone, but its 2,018mAh battery may struggle to last through a day of intensive use. The Mophie Juice Pack Wireless addresses this by providing a full charge, extending your phone's uptime.

Beyond extending battery life, this case adds a protective shell without excessive bulk, featuring short-circuit, over-charge, and temperature protection. It supports Qi wireless charging, allowing you to recharge both the case and phone simultaneously. Passthrough technology enables the use of a Lightning cable or headphones without removing the case.

4. Newdery Battery Case

Best Samsung Galaxy S25 Case

### NEWDERY Battery Case

0Benefit from an 8,000 mAh battery, compact design, and wireless charging with the NEWDERY Battery Case for the Samsung Galaxy S25. 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 4,000mAh battery, but daily use can quickly deplete it. The Newdery Battery Case adds an extra 8,000mAh, nearly doubling your phone's battery life, perfect for using demanding features like cameras or gaming without adding much bulk.

The case easily slides onto your Galaxy S25 and connects to the USB-C port for charging. It maintains access to NFC and data transfer through the USB-C port. Wireless charging is supported, and fast charging via USB-C ensures quick recharges. The case also adds protection against damage with its TPU and PC materials.

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

1Experience universal wireless charging with this versatile battery that also includes 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 often become obsolete when you upgrade your phone. The Mophie Juice Pack Connect offers a solution that works across different devices. This isn't a traditional case but a battery that attaches to your phone.

The Juice Pack Connect uses a small anchor point attached to your phone or case, allowing you to easily attach the 5,000mAh battery pack when needed. It uses Qi wireless charging, making it compatible with a variety of smartphones, and comes with a stand for hands-free viewing.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about finding the one with the largest capacity; it's about balancing capacity, size, and price. If you only need a charger to throw in your bag, a portable charger might suffice. A battery case should fit comfortably in your pocket or bag while providing protection.

High-capacity cases often sacrifice features like quick charging and Qi charging. These features are essential if you keep the case on your phone constantly and want to charge wirelessly.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone as long as they are used correctly. They supply power directly to your phone, and once the case is depleted, your phone's battery takes over. Smartphones have built-in protection 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 drain lithium-based batteries in battery cases. Fully draining them can actually damage the battery and reduce its capacity over time.