The best portable chargers are a great way to keep your smartphone or other devices powered up on the go. However, they can sometimes be bulky and inconvenient. A battery case offers a sleek, tailored solution that not only extends your phone's battery life but also eliminates the hassle of managing cables associated 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 AmazonBattery cases are essential for providing additional power to your phone while also offering protection against damage. It's crucial that these cases do not interfere with your phone's features, such as NFC or ports, and they should not add excessive bulk. Features like wireless and quick charging enhance the convenience of battery cases. However, not all battery cases are created equal; some may be too bulky or unreliable. To help you find the perfect match, we've selected five top battery cases for popular phones.

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

0Enhance your iPhone 16 Pro's battery life and protect it with this sleek, compact battery 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's 3,582mAh battery is robust for daily use, but intensive activities like photography, social media browsing, or gaming can quickly drain it. The Mophie Juice Pack Battery Case, equipped with a 2,800mAh battery, extends your phone's life significantly. It easily slots onto your phone and connects via the USB-C port, featuring an indicator light to monitor battery levels and a stand-by mode to prevent overcharging.

While the Juice Pack may not offer the largest battery boost, its 50% increase in battery life for the iPhone 16 Pro is substantial. It remains surprisingly compact, adding minimal bulk and weighing only 3.5oz, making it easy to carry and one of the best iPhone accessories available.

This case also provides robust protection, rated for falls up to 6ft, and features raised edges to safeguard your screen and camera from scratches and cracks. Though it includes an integrated passive magnet for attaching accessories, it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Ensure your iPhone 16 Pro Max stays safe and charged with this rugged case, equipped with 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 The iPhone 16 Pro Max boasts a hefty 4,685mAh battery, but intensive use like gaming or using Cinematic Mode can still deplete it. ZeroLemon’s battery case offers peace of mind with its dual 5,000mAh batteries, effectively adding about 1.5 extra charges to your phone. LED indicators on the case provide clear visibility of charging status and battery levels.

Built with military-grade protection and shockproofing, ZeroLemon’s case ensures your phone remains safe. While it adds significant bulk due to the 10,000mAh capacity, it's ideal for users with larger hands. When connected via USB-C, the case supports speedy 18W fast charging, reaching full capacity in about two hours. However, 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

0Boost your iPhone SE's battery life with this slim, lightweight protective case featuring a 2,525mAh battery and Qi charging compatibility. 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 at a budget-friendly price, but its 2,018mAh battery struggles with heavy use. The Mophie Juice Pack Wireless provides a full charge, ensuring longer periods away from power outlets.

In addition to extending battery life, this case offers protection without adding much bulk. It includes short-circuit, over-charge, and temperature protection to keep your device safe. When it's time to recharge, simply place it on a wireless charger, and both the case and phone will be powered up. Passthrough technology allows for the use of lightning cables or headphones without removing the case.

4. Newdery Battery Case

Best Samsung Galaxy S25 Case

### NEWDERY Battery Case

0The NEWDERY Battery Case for the Samsung Galaxy S25 offers an 8,000 mAh battery, a compact design, and wireless charging capabilities. See it at AmazonProduct SpecificationsCapacity8,000 mAhSizeNot listedWeight2.82 ouncesPROSDisplay shows charging percentagesSupports wireless chargingCONSDifficult to remove phone from caseThe Samsung Galaxy S25's 4,000mAh battery is substantial for its size, but heavy usage can drain it quickly. The Newdery Battery Case adds an extra 8,000mAh, nearly two full charges, making it ideal for intensive tasks like gaming or photography without adding much bulk.

The case slides onto your Galaxy S25 and connects via the USB-C port to deliver power. Even with the case attached, the USB-C port remains functional for NFC and data transfer. Wireless charging is supported, and fast charging via USB-C ensures quick recharges. The case also provides protection against damage using 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

1This versatile battery pack attaches to your phone, supports wireless charging, and even 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 can become obsolete when you upgrade your phone, but the Mophie Juice Pack Connect offers a solution that works with your current and future devices. This isn't a traditional case but rather a battery pack that attaches to your phone.

With the Juice Pack Connect, you attach a small anchor to your phone or case, allowing you to easily connect the 5,000mAh battery pack when needed. It uses Qi wireless charging, making it compatible with a wide range of smartphones and capable of wireless recharging. It also comes with a stand for convenient 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 for occasional use, a portable charger might be more suitable. 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. These features are crucial if you plan to 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 as long as they are used correctly. Your phone draws power directly from the case, and once the case is depleted, it switches to the phone's battery. Smartphones have built-in monitoring 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 actually damage the battery and reduce its capacity over time.